service manual - Handicare AS

SERVICE MANUAL 

Service documentation for 

electrically driven wheelchairs 

Midway,Belize,Capri, Antibes, 

Pacific,Atlantic, 

Rhino and Hippo. 

Ver. 2004 

1 e Tussendijk 17 (t) +31 (0)492 552750 Chamber of Commerce Oost 

Brabant 17112719 

5705 CG Helmond, (f) +31 (0)492 552751 Bank: ABN AMRO 536646464 

the Netherlands 

VAT No. 807 602 486 B01 

www.wheelbase.nl 

Email info@wheelbase.nl 

a base to build on. 

1


GENERAL 5 

GUARANTEE 7 

LIABILITY 7 

TIPS, WARNINGS, SAFETY 8 

WORKSHOP SECTION: CHASSIS 9 

ANTI-SHIMMY ADJUSTMENT OF THE CASTOR (BELIZE, MIDWAY) 9 

BATTERY CONTAINER ; OPENING, TAKING OUT BATTERIES 9 

BATTERY CONTAINER ; CHECKING/CLEANING THE GUIDE RAILS 9 

BATTERY CONTAINER ; REMOVING 10 

BRAKE RELEASE MECHANISM ; ADJUSTING 10 

CASTOR WHEELS ; REPLACING THE BEARINGS 10 

CASTOR WHEELS ; ADJUSTING/REPLACING THE CASTOR BEARINGS 10 

DRIVING DIRECTION HOLDER (MIDWAY) 11 

HINGED SUPPORT ; DEMOUNTING 11 

HINGED SUPPORT ; REPLACING THE RUBBERS 12 

HINGED SUPPORT ; REPLACING THE BEARINGS 12 

MOTOR ; DEMOUNTING 12 

MOTORS ; REPLACING THE CARBON BRUSHES (MICRO MOTOR WITH SQUARE 

BRAKE HOUSING) 13 

MOTORS ; REPLACING THE CARBON BRUSHES (MICRO MOTOR WITH ROUND 

BRAKE HOUSING) 13 

MOTOR SUPPORTS ; REPLACING THE BEARINGS AND/OR SHAFT 14 


2


MOTOR SUPPORT ; ADJUSTING THE SHAFT 14 

SIDE-COVERS (PLASTIC) ; REMOVING 15 

SPRING-LEG ; REMOVING 15 

SPRING-LEG ; DEMOUNTING 15 

TIE DOWN HOOKS 16 

TYRES ; CHANGING A TYRE WITH DIVISIBLE STEEL RIMS 16 

WORKSHOP SECTION: SEAT UNIT 18 

ARMREST (STANDARD) ; DEMOUNTING THE 18 

ARMREST HOLDER ; ADJUSTING/DEMOUNTING THE 18 

ARMREST ; FOLDING 18 

BACKREST ; DEMOUNTING THE 19 

BACK FRAME ; DEMOUNTING THE 19 

CONTROL PANEL HOLDER ; DEMOUNTING THE 19 

CONTROL PANEL ; PARALLEL FOLDING 20 

HEADREST ; DEMOUNTING 20 

HEADREST HOLDER ON A SLIDE BRACKET 20 

HEIGHT ADJUSTMENT (ACTUATOR) OR THE GAS SPRING ; REPLACING 21 

HEIGHT ADJUSTMENT ; ELECTRICAL (WITHOUT TILTING ADJUSTMENT) 22 

LEGREST (STANDARD) ; DEMOUNTING THE 23 

LEGREST ; (ELECTRICALLY ADJUSTABLE) DEMOUNTING THE 24 

LEGREST COMFORT 25 

LEGREST ; ELECTRICALLY ADJUSTABLE UNDIVIDED 25 


3


SEAT FRAME/SEAT UNIT ; REMOVING THE 26 

SEAT HEIGHT ; ADJUSTING (STANDARD WHEELCHAIR) 3 POSITIONS 26 

SEAT WIDTH ; ADJUSTING THE 27 

SEAT FRAME, SEAT DEPTH ; ADJUSTING/DEMOUNTING OF 27 

SIDE CUSHION (PADDED) ; DEMOUNTING THE 27 

TILTING ADJUSTMENT (ELECTRICAL) WITHOUT HEIGHT ADJUSTMENT 27 

TILTING ADJUSTMENT (ELECTRICAL) IN COMBINATION WITH HEIGHT 

ADJUSTMENT 28 

TRAY ; ATTACHMENT OF THE 29 

TRAY ; ATTACHMENT OF THE (CONTROLLER IN THE MIDDLE) 29 

TRAY ; ATTACHMENT OF THE ON TWO SIDES. 29 

CONTROL PANEL ; DEMOUNTING 30 

CONTROLLER/ALM ; REMOVING 30 

ELECTRICAL DIAGRAM 30 

ELECTRONICS TROUBLE-SHOOTING 31 

HEAD LIGHT/ BLINKER/ LIGHTING UNIT ; REPLACING 31 

INTEGRATED CONTROLLER 31 

REAR LIGHT UNIT ; REMOVING THE COVER OF THE 31 

SETTINGS 32 

WIRING ; REPAIRING THE 32 


4

General 


This manual describes the procedures and actions that have to be carried out during maintenance and repair 

of the powered wheelchairs Belize, Midway, Antibes, Capri, Rhino, Atlantic, Pacific and Hippo, as 

manufactured by Wheelbase Products BV. 

FIRST READ THE DESCRIPTION OF THE ACTIVITY CONCERNED TO THE END! 

Most activities describe the total disassembly of parts, but for most repairs this is not necessary. 

Repair and maintenance should be carried out by experienced and qualified personnel preferably trained by 

service people of Wheelbase Products BV 

All replacement parts can be ordered through Wheelbase Products BV. 

See the replacement parts list in the related chapter of this documentation. 

If other replacement parts are used, they must be of the same quality as the original parts. 

However, Wheelbase Products BV accepts no responsibility in case other parts than the ones supplied by 

Wheelbase are used. 

The sections of text which are important for the health and safety of persons are printed in bold type, 

except in the chapter on safety itself. The following warning texts may be used: 

WARNING ! 

This heading warns for possible injury to persons. 

TAKE CARE ! 

This heading 

warns for 

possible damage to the wheelchair. 

TIP 

Tips, specific instructions and/or explanatory information will follow this heading. 

If this manual is not explicit enough about certain topics, you can contact: 

Wheelbase Products BV 

1 e tussendijk 17 

5705 CG Helmond 

+31 (0) 492-552750 

(f)+31 (0) 492-552751 

e-mail:info@wheelbase.nl 


5

www.wheelbase.nl 



6


Guarantee 

Unless agreed otherwise in writing, the following guarantee conditions apply. 

The manufacturer gives a guarantee on replacement parts to your dealer up to 24 months after delivery. 

Faults must be reported to the manufacturer before the period of guarantee has expired. 

The guarantee applies to faults that: 

occur during normal use of your wheelchair. 

are caused by material defects. 

are caused by manufacturing faults. 

The guarantee excludes faults caused by: 

normal wear and tear. 

incorrect use or misuse. 

the use of other consumables than those prescribed. 

The user and the dealer must give the manufacturer the opportunity to repair the faults. 

For parts built in by a third party the guarantee conditions of the supplier involved apply. The period of 

guarantee may differ from the period mentioned above. 

The manufacturer reserves the right to alter its wheelchairs without previous notice. 

Liability 

The manufacturer is not liable for unsafe situations, accidents or damage resulting from the ignoring of 

warnings or instructions which are indicated on the wheelchair or in this documentation, for example: 

incompetent or incorrect use or maintenance; 

use for applications or under conditions other than those specified in this documentation; 

the use of replacement parts other than those prescribed; 

repair without the dealer's permission; 

alterations to the wheelchair. This includes: 

alterations to the control programme; 

welding, mechanical processing and suchlike; 

additions to the wheelchair or the controls. 

The manufacturer is not liable: 

for damage resulting from faults or defects of the wheelchair (for example damage to products, factory 

stoppages, delays etc.). 


7


Tips, warnings, safety 

Read this chapter carefully before starting any work on the wheelchair. 

If possible, switch off the wheelchair when working on the wheelchair. Thus you will prevent unexpected 

movements. If possible, remove the batteries. 

When switching off the wheelchair or removing the batteries is not possible because of the nature of the 

work, prevent unexpected movement of the wheelchair by solid support and /or blocking, or make sure the 

powered wheels are free from the ground. 

Work with tools that are suitable and in good condition. 

Unsuitable or worn tools may damage components beyond repair. 

Always use self-locking nuts and rings of the right size. 

A wheelchair without batteries weighs about 70 kg. Keep this in mind when you turn the wheelchair in a 

position other than with 4 wheels on the ground. 

Some loose parts may have a considerable weight too. 

Mark the various positions and settings before disassembling components; this will prevent later 

readjustment to the user. 

If necessary, make a note of the various cable connections. 

After a repair, always check whether all parts are in the correct position and whether all screws are 

tightened. 

After repair, always make a test ride, starting with the lowest speed level. 

Whenever you have to get in touch with Wheelbase Products always note the Serial 

number of the chair concerned, the serial number is attached to the frame at this 

position. 

This is a very important number in order to get the right parts, and in case of 

warranty claims. 

Serialnumber plate: 


8

Workshop section: chassis 


Anti-shimmy adjustment of the castor (Belize, Midway) 

Some types of the Belize and Midway have a simple friction system inside the castor, which reduces the 

shimmying of the castor wheels at high speed (see also: replacement of the castor bearings). 

Remove the cap on top of the castor. 

Loosen the nut from the castor. 

Remove the toothed spring washer and the two steel rings from the castor, also remove the spring washer. 

Clean all components. 

Rub the rounded side of one of the rings with grease. 

Put the spring washer back onto the ball bearing (the outside of the spring washer touching the ball 

bearing, then put back the washer with the clean, flat side facing down. 

Put the second ring on top of the first in the same position. 

Mount the toothed spring washer and the nut. 

Tighten the nut so, that the fork has a slight resistance when rotated by hand. 

Check again after using the wheelchair for some time and, if necessary, tighten the nut slightly. 

Battery container ; opening, taking out batteries 

Remove both knobs at the left and the right of the plastic front, at the side between the large wheels. 

Pull the battery container out by means of the belt. 

Detach the belt by pressing the interlock on the left and right clasp; some types have the clasp replaced by 

Velcro. 

Remove the cover. 

Disconnect the battery poles. 

Take out the batteries; the farthermost battery can only be taken out when the first one is removed. 

Battery container ; Checking/cleaning the guide rails 

Open the battery container as described above. The cover and the plastic front can stay, but the seat has to 

be removed from the wheelchair. 

Clean the rails with a clean cloth, the parts on the battery container as well as the parts in the wheelchair. 

Rub lightly with a water-repellent lubricant, for example lithium grease. 


9


Battery container ; removing 

Remove the batteries as described above. 

Remove the frame carrier bag (Velcro) and take out the seat. 

Loosen the two guide-rail bolts at the outer side of the frame plate (see photo). 

Loosen the two bolts that fasten the guide-rails at the side of the spring-legs. 

Remove the battery container with rails from the wheelchair. 

(Some parts of the rails are welded to the battery container and therefore they cannot be replaced.) 

Brake release mechanism ; adjusting 

The brake release mechanism consists of a stud with a fork at both ends. 

These forks are joined to the handles of the brake releases of both motors by means of a screw. 

To release the brake of both motors with the handles in the same position, you can vary the length of the 

stud a bit by turning the forks. 

For this purpose, let one fork remain fixed and turn the other fork and/or the stud. 

Adjusting will be optimal if carried out with both powered wheels free from the floor. 

Types with electrically adjustable seat height have no brake release mechanism; each motor has to be 

released separately. 

Castor wheels ; replacing the bearings 

The bearings of the castor wheels have such incurrent dimensions that they are hard to obtain separately. 

In most cases it is faster and cheaper to replace the entire castor wheel. 

Castor wheels ; adjusting/replacing the castor bearings 

Support the frame of the wheelchair in such a way that the wheel concerned is free from the floor. 

Remove the cap on top of the castor. 

TAKE CARE! 

Tilting upwards will prevent damaging of the paintwork! 

Loosen the nut at 

the top of the castor with a box wrench or a socket wrench, 

meanwhile blocking the rotation of the fork. 

If necessary, tick the fork carefully out of the castor by means 

of a hammer and a suitable plastic or wooden plug. 

Remove the plastic ring and the two cup springs 

(concave/convex steel rings) lying on top of the upper bearing. 


10


Drive the bearings out of the castor, from the opposite side, by hammering on a screwdriver placed at the 

outer edge of the bearing (see photo, where the lower bearing is driven out). 

Always hammer stepwise at alternating sides of the bearing, to prevent the bearing from getting out of 

alignment. 

Replace the bearings by new ones, drive them in with a piece of tube or plug which touches the outer ring 

of the bearing , until they reach the thickening in the castor. 

TAKE CARE! 

With some types Driving in the bearings at the inner ring may cause damage to the bearings. 

of the Midway, 

the fastening ring of the driving direction holder is also located on the fork. 

When worn out, you can replace it too. Make sure that the notch stays in the same direction, parallel to the 

direction of rotation of the wheel, at the lower side of the fork. 

See also: driving direction holder. 

Place the fork back in the castor. 

For adjusting the swivel wheels see also: anti shimmy adjustment. 

Push the cap in the upper end of the castor. 

Driving direction holder (Midway) 

Remove the tail light unit (see: cover of the lighting unit). 

Unscrew the two bolts and nuts at the ends of the U-section. 

Tilt the U-section forwards and downwards. 

Unscrew the bolt in the middle of the leaf spring. 

Remove the bolts and nuts at the left and the right under the arms and remove the arms, make sure that you 

do not lose the plastic bearing bushes. 

To replace the runners (bearings), you must remove the shaft retainer rings. 

Mount in reverse order; mind the following: 

Placing the bearing bushes: you should hold them in the U-section while pushing the pen through them. 

The pre-stressing on the leaf spring should be zero in the neutral position. 

Hinged support ; demounting 

Remove both spring-legs from the spring-leg supports as 

described above. 

Remove the cover of the lighting unit, if present, according 

to the described method. 

For some types with electrically adjustable seat heights, you 

should also remove the steel bracket which is mounted onto 

the inside of the frame for the shaft of the hinged support. 

For this purpose, remove the two bolts at the left and the 

right from the welded lips. 

Remove the nut from the shaft in the middle of the U-shaped frame tube (see photo). 

Support with one hand the hinged support which is located in the U-shaped frame tube, while driving out 

the shaft by means of a suitable round pin. 

Mounting should take place in reversed order. See to it that the play is not to big, but surly not to small. 


11

Hinged support ; replacing the rubbers 


TIP 

The rubbers of the hinged support need only be replaced when, during normal use, 

the hinged support hits the frame when driving over obstacles. 

Remove the hinged support as described above. 

Unscrew the flat nuts at the underside of the hinged support. 

Replace the rubbers. 

Check the bearings and replace them if necessary (see: replacing the bearings of the hinged support). 

Mounting should take place in the reversed order of the procedure described. 

Hinged support ; replacing the bearings 

On some chairs bearings are not used. Remove the hinged support as described above. 

Drive out the bearings from the opposite side with the help of a screwdriver or a pin, and possibly 

adjustable-joint pliers. 

Replace the bearings and, if necessary, the shaft. 

Mount the hinged support. 

Mount the spring-legs, and the spring clips of the ball joints, when replacing grease has to be used. 

Mount, if present, the stop profile of the seat height adjustment. 

Motor ; demounting 

Switch off the wheelchair and open the battery container. 

Disconnect both battery poles and remove the batteries. 

Remove the seat from the chair to have a better view on your work. 

The seat can simply be taken out upwards. 

Support the frame of the wheelchair in such a way, that the wheel concerned is just free from the 

ground. 

Remove (if present) the wheel cap of the powered wheel by unscrewing the cross-head screw. 

Unscrew the 4 (in case of light metal rims 5) inner bolts and take off the wheel. 

Then follow the instruction "removing the plastics covers" described above. 

Disconnect the mechanism of the brake release by removing the fork of the motor. 

Unscrew the bolt for this purpose. 

Remove the plug of the motor power supply from the controller by pressing the two interlocks at the sides 

of the plug, while pulling the plug out. The interlocks are under the plastic covering that covers the plug. 

TAKE CARE! 

Pulling out the plug without pressing the interlocks may damage the plug and the 

controller. 


12


Remember the course of the cable, especially when both motors are demounted. 

Loosen the 3 nuts of the bolts with which the motor is fastened to the motor support. The bolt 

heads are behind the motor supports. The bolts can remain in the motor support. 

The spring-leg support is also fastened by means of the motor bolts. The spring-leg can remain attached to 

the spring-leg support. 

(For types with rear wheel drive the spring-leg support functions also as anti-tip device.) 

Remove the motor. 

To mount the motor, the instructions have to be carried out in reverse order. Do not forget to grease the 

spring-leg bearing when assembling. 

The cable should run from the motor, between the guide rail of 

the battery container and the motor support, to the controller. 

See photo 

TAKE CARE! 

An incorrect course of the cable may cause damage to the cable by crushing and it may 

even be cut through. 

Motors ; replacing the carbon brushes (Micro Motor with square brake 

housing 250Watt only) 

The carbon brushes of the motors are of such a quality that they last, in most cases, 

the total life span of the wheelchair. 

To clean the carbon brushes periodically with compressed air (and to replace the carbon brushes if 

necessary) the motors do not have to be removed. 

However, you must switch off the wheelchair, and preferably disconnect the battery poles. 

After removing the plastic covers, taking out the seat and opening the battery container, you can remove, 

by means of a screwdriver, the rectangular plastic plates which are located at the left and the right of the 

square part of the motors. 

The carbon brushes are located behind them. 

Motors ; replacing the carbon brushes (Micro Motor with round brake 

housing 250Watt only) 

The carbon brushes of the motors are of such a quality that they last, in most cases, 

the total life span of the wheelchair. 

See also: demounting the motor. 

Turn the round pin of the brake release out of the brake housing. 

Remove the two screws from the black plastic cover at the rear of the motor. 

Remove the cover and then the black plastic ring. 

Check the carbon brushes, clean or replace them if necessary. 


13


Motor supports ; replacing the bearings and/or shaft 

TIP 

The bearing bushes of the motor supports are made of bronze and are self-lubricating. 

Only in exceptional cases the bearings or shaft have to be replaced. 

Remove the motor(s) according to the procedure described. 

Remove the spring-leg from the spring-leg support (anti-tip) (see: 

removing of the spring-leg). 

Loosen the shaft of the motor support by unscrewing the bolt which 

is located at the bottom of the edged corner of the frame plate (at the 

outside of the frame), and by unscrewing the nut with which the 

shaft is mounted to the inside of the frame plate (see photo). 

Adjusting rings 

TAKE CARE, let this fastening remain in place 

and do not turn the lock nut. 

nuts 

Take the motor support with the shaft out of the frame. 

Remove the large adjusting ring by loosening the socket screw. 

Remove the copper rings. 

Remove the shaft from the motor support, if necessary with a rubber or plastic hammer. 

Drive the bearings out of the motor support, from the opposite side, by hammering on a wooden or plastic 

plug placed against the bearing. 

Replace the bearings and, if necessary, the shaft of the motor support. 

Rub the shaft lightly with an anticorrosive lubricant. 

Mounting should take place in the reverse order of the procedure described above; the adjusting ring 

should only be fixed to the bearing after the motor support has been mounted. This will prevent sideward 

movement of the motor support. 

Motor support ; adjusting the shaft 

Adjusting the shaft of the motor support is necessary to align the two powered 

wheels, but it has to be carried out only when a motor support or shaft has been 

replaced or when the position of the lock nut is changed accidentally. 

Mount the motor 

support on the 

shaft. 

Fasten the head end of the shaft to the side of the frame plate by screwing the bolt in it. 

Place the shaft of the motor support in its original position, parallel to the frame plate, and tighten the lock 

nut and nut lightly (also see the photo "replacing the bearings and/or shaft of the motor supports"). 

Determine the direction of a wheel with a long, straight strip of wood, by placing it against the widest 

possible part of the wheel. 

Mark the position of the end of the wooden strip (for example on the floor). 

Repeat this with the other wheel. 

Measure the distance between the markings; this should be the same distance as the distance between the 

outside of first and the outside of the second wheel. 

If necessary, screw the lock nut and nut a little bit. 

Repeat this procedure until the wheels are parallel. 

Tighten the nuts firmly. 


14


Side-covers (plastic) ; removing 

Remove the loose seat from the chair. 

Remove the plastic side-cover by unscrewing the upper two bolts at the inside of the frame and the two 

bolts at the front side of the steel frame plate, at the side of the castor wheels. These bolts are behind the 

bag, which is fastened to the plate with Velcro. 

Loosen the knob of the brake release. 

Remove the cover in a downward movement. 

Spring-leg ; removing 

Support the frame of the wheelchair in such a way that the wheel(s) concerned is(are) free from the 

ground. 

Remove the spring clips from the heads of the ball joints with a screwdriver by turning the eye to the 

outside. 

Carefully tick both ends of the spring-leg from the balls, by means of a plastic or rubber hammer, or wreck 

them loose carefully with a lever. 

The Atlantic has the lower ball joint replaced by a bush with a lip, in which case you should remove the 

bolt from the spring-leg support. 

Spring-leg ; demounting 

TIP 

Only in very exceptional cases will parts of the spring-leg have to be replaced 

Make notes of the exact length of the pre-stressed spring or mark the position of the collar nut on the 

thicker part of the spring-leg. 

Loosen the collar nut in order to relieve the steel compression spring. 

Loosen the ball joint at the upper end of the spring-leg. 

Remove the nut and the collar bush. 

Replace the defective parts. 

Mount in exactly the same position. 

Push the spring-leg back on the balls (put some grease into the ball joint), with the steel spring at the upper 

side. 

Mount the spring clips. 

For the Atlantic the instruction is similar, but it has two spring-legs mounted side by side on a plate. The 

upper ball joint is mounted in the middle of the plate, the lower has been replaced by a bush. 


15


Tie down hooks 

The crash-tested, 4-point strap tie down (ISO 7176-19) consists of two tie down hooks at the side of the 

frame and two hooks at the side of the large wheels, which can be mounted in the frame tube after 

removing the plastic caps. 

Large, flat tie down hooks above the castor wheels are mounted on the outside of the frame. With all new 

types the holes for tie down hooks are provided, if necessary, with thread. 

Tyres ; Changing a tyre with divisible steel rims 

Castor wheels as well as all types of powered wheels have divisible rims. 

Powered wheel (with wheel cap) 

Remove the wheel cap after loosening the middle cross-head screw. 

Unscrew the four inner bolts and take the wheel off the hub. 

Let the air out of the tyre. 

Unscrew the six wheel bolts. 

WARNING ! 

Never unscrew these five bolts when the tyre is still inflated. 

Remove the old tyre and place a new one. Make sure that the tube does not get stuck between the rim 

halves! 

Tighten the six wheel bolts. 

Mount the wheel and the wheel cap onto the hub. 

Castor wheel 

Unscrew the large (M8) wheel bolt and remove the wheel. 


Unscrew the five wheel bolts. 

WARNING ! 



halves! 

Tighten the five wheel bolts. 

Mount the wheel onto the fork. 


16

Changing a tyre with light metal rims 


Unscrew the four inner bolts and take the wheel off the hub. 


Unscrew the five wheel bolts at the back side of the rim. 

WARNING ! 



halves! 

Tighten the five wheel bolts. 

Mount the wheel onto the hub. 


17


Workshop section: seat unit 

Armrest (standard) ; demounting the 

Remove the entire armrest from the seat frame by loosening the large knob 

(A) at the side of the seat. 

Loosen the bolt (B) in the aluminium profile. 

Take the armrest with the two steel pens out of the aluminium profile. 

Unscrew the pens from the angle profile. 

Unscrew the padded armrest from the angle profile. 

B 

A 

After mounting, adjust the height and the angle to the user. 

Armrest holder ; adjusting/demounting the 

Loosen the bolt (A) with which the armrest width adjustment is 

screwed to the bottom end of the seat frame. 

Adjust the armrest or remove the width adjustment after 

removing the bolt. You can also remove the armrest after 

loosening the large round knob at the side of the seat frame. 

Armrest ; folding 

A 

See also: armrest/angle adjustment 

The armrest is mounted as usual with two steel pens, with which the angle can be adjusted. 

By loosening bolt (A), which is located at the outside between the two pens, you can remove the 

upper part of the armrest. 

The square tube is provided with a clamping plate, which, after removing the cap at the front of the 

tube, can be removed after unscrewing bolt (A) completely. 

The folding mechanism and the shaft can be removed by unscrewing bolt and nut (B). 

The rotation point of the stop can be removed by loosening the bolt and nut (C). 

The stop can be removed by loosening the socket screw (D) at the outside, after which the plastic 

jacket tube becomes loose. 

The threaded bush can be demounted by turning loose the castor at the inner side. 

The ball joints of the carrier at the backrest can be carefully ticked loose from the heads after 

removing the spring clips. 

When mounting, take care of the following: 

The right friction in rotation point (B), which can be adjusted by turning loose or tightening the nut. 

The adjustment of the carrier at the backrest: the adjustment should be fixed, and the left and the 

right side should be the same. 


18


Backrest ; demounting the 

Remove, at the back side, the four cross-head screws with which the padded backrest is screwed to 

the back frame. 

Back frame ; demounting the 

Unscrew the bolt/nut in the middle of the top of the back frame, with which the (electrical) back 

angle adjustment is mounted to the back frame. 

Unscrew the two bolts/nuts at the bottom left and bottom right side, with which the back frame is 

fastened to the seat frame. 

Control panel holder ; demounting the 

Disconnect the plug from the control panel by pulling at the thickest part. Thus you 

unlock the plug. 

Unscrew the two socket screws (A) at the wider side of the control panel and take the control panel 

from its holder. 

Remove the inner sliding part by loosening the first socket screw (B) at the underside. Pull the cord 

and the plug out of the outer tube of the control panel holder. 

Unscrew the bolt which forms the rotation point (C) of the control panel holder and remove the 

control panel holder. 

Remove, if necessary, the pen of the height adjustment (D) from the slotted hole by unscrewing the 

bolt and nut. 

Remove the slide and the spring, and the handle of the release as well, by removing the bolt at the 

head end. Take care: this bolt is provided with a threaded locking device. 

Remove the U-shaped clamping plate from the outer casing by unscrewing the socket screw. Take 

care: this bolt is provided with a threaded locking device. 


- The plastic rings between the armrest holder and the control panel holder, which ensure that there 

is enough friction in the rotation point (C). The friction can be adjusted by tightening or loosening 

the bolt of the rotation point. The control panel should not "fall down". 

- The lubricant on the slide, and the position of the slide (the longest side down). 

- The locking device on the bolts (see above). 

- The course of the cable, through the U-shaped clamping plate, which should lie with the open side 

up. 


19


control panel ; parallel folding 

see also: demounting the control panel holder 

Remove the square tube with the control panel from the outer part of the parallel construction, by 

loosening the clamping bolt (A). Remember the course of the cable, it is tied to the bars of the 

parallel in order to prevent it being cut when moving. 

Remove the entire parallel construction from the armrest by unscrewing the two bolts and nuts (B). 

The parallel can be demounted by loosening the various blind nuts. 


The position of the fastening holes in the inner part of the parallel, at the upper side. 

The course of the cable, tied down to the arms of the parallel. 

The friction on the rotation points, it can be adjusted by loosening/tightening the blind nuts. 

The friction should be such, that the user can fold the control panel away, but also that it can not 

move by itself because of, for example, driving over bumps. 

Headrest ; demounting 

Remove the headrest from the backrest by loosening the large knob. 

Remove the clamping mechanism from the backrest by unscrewing the four cross-head screws. 

Unscrew the padding from the headrest bracket by means of the two cross-head screws. 

Demount the adjustable bracket by unscrewing the rotation points. 

Headrest holder on a slide bracket 

Types without the possibility to fasten the headrest holder with screws to the backrest, are provided 

with a headrest holder clamped around the slide tube. 

Demount this clamp construction by unscrewing the two socket screws. 

The metal part around the lip of the back angle adjustment can be removed after loosening the upper 

fastening of the back angle adjustment. 


20


Height adjustment (actuator) or the gas spring ; replacing 

Place the height adjustment in its highest position. 

Ensure that the height adjustment is in its highest position. 

Then the gas springs, which yield 2100 N each, are in their 

longest position. 

If the actuator has to be replaced, disconnect the plug and cut, if 

necessary, the tie wraps if they are still connected to the chassis. 

Remove the spring clips from the upper ball joints of the gas 

spring(s) at the left and right of the vertical actuator (A). Tick the 

joints off the balls. 

Repeat this, if necessary, at the bottom side of the gas springs. 

B 

Unscrew, if necessary, the bolt and nut at the top side of the 

vertical actuator, which is located under a welded strip of the 

height adjustment (B). 

Remove, if necessary, the bolt and nut of the lower fastening of the actuator. 

A defective actuator can best be sent to Wheelbase Products BV. 

A 

Mount the required new parts. 

(if necessary, see also the mounting order of 'electrical height adjustment') 


21


Height adjustment ; electrical (without tilting adjustment) 

(see also: exploded view) 

(The photo also shows a tilting adjustment) 

To demount the entire height adjustment, we 

advise to work with two persons, because of 

the weight of the components. 

Remove the seat system as follows: 

Place the height adjustment in its highest 

B 

position. 

A 

First take out the seat. 

Disconnect the cable from the control panel 

and pull it out as far as the chassis. Cut, if 

necessary, the tie wraps of the cables of the 

height adjustment if they are still connected to the seat frame. 

Loosen the bolts and nuts (A) at the left and right at the backrest side. 

Remove the spring clips from the upper ball joints (B) at the front side and tick the joints loose. 

Remove the entire seat frame. 

In case of front wheel drive: 

Demount the tail light unit, if present (see: tail light unit). 

Demount the beam of the driving direction holder from the chassis (if present) by unscrewing the 

two bolts at the left and right (accessible from the rear side) 

Unscrew, at the upper side (A), the two declining strips between the frame legs. 

Ensure that the height adjustment is in its highest position! Then the gas springs, which yield 

2100 N each, are in their longest position. 

Disconnect the plugs of all actuators present and cut, if necessary, the tie wraps if they are still 

connected to the chassis. 

Remove the spring clips from the upper ball joints of the gas spring(s) at the left and right of the 

vertical actuator. Tick the joints off the balls. 

Repeat this, if necessary, at the bottom side of the gas springs. 

Unscrew, if necessary, the bolt and nut at the top side of the vertical actuator, which is located under 

a welded strip of the height adjustment (B). 

Unscrew the four bolts, with which the large plates of the height adjustment (C) are fastened to the 

frame at the left and right. 

Remove the entire height adjustment. 

TIP 

The bearing bushes of the height adjustment are made of bronze or nylon and are 

to be lubricated. 

Only in exceptional cases the bearings or shafts have to be replaced. 

Remove the actuator by removing the bolt and nut of the lower fastening. 

Remove the holder of the vertical actuator of the chassis by unscrewing the bolt and nut, with which 

it is fastened to the steel frame plate. To do this, you should open the battery container. 


22


Front wheel drive types have a steel profile screwed parallel to the hinged support, in which the low 

position stop has been mounted. 

Remove by unscrewing the bolts at the left and right. 

Mount as follows: 

Screw the height adjustment mechanism, without gas springs and without actuator, back to the 

lower frame. 

Mount the gas springs, the height adjustment is automatically in its highest position. 

Mount the spring clips ! 

Mount the lower end of the actuator. 

Turn, manually, the top end of the actuator so far out that it can be fastened easily. 

Turn the switch, which is mounted around a horizontal tube (loosen the hose clip), around the tube 

until a position is reached in which it switches off mechanically. Tighten in this position by means 

of the hose clip. (The maximum length of the shaft of the actuator may not exceed 7.5cm.) 

Mount the seat system in reverse order of the description above. 

Notice the course of the cables, ensure that they cannot be crushed anywhere. 

legrest (standard) ; demounting the 

If the handle and torsion spring function badly, you should turn the socket screw (A) several 

times in and out a bit. 

Release the legrest with the handle, swing it to the outside and remove it by lifting upwards. 

Remove the handle and the torsion spring by loosening the socket screw (A), leave the socket screw 

in such a position that the handle just comes loose. This will make mounting afterwards easier. 

Remove the inner tube by loosening the socket set-screw (B) at the bottom of the outer tube. 

Remove the foot plate by unscrewing the bolt with which it is attached to the metal casting. 

Remove the casting by unscrewing the bolt at the side. 

Remove the pins of the heel strap by loosening the nut at the 

underside of the foot plate. 

The suspension of the legrest is put in the seat frame through a steel tube. 

Take the suspension out of the seat frame by loosening the two socket screws at the front bottom of 

the seat frame. 

With this, you can also adjust the width of the footrests. 


23


Legrest ; (electrically adjustable) demounting the 

see also: exploded view 

(see also: “demounting the legrest (standard)”) 

Release the legrest with the handle, swing it to the outside and remove it by lifting upwards. 

Loosen the rubber cap by removing the two bolts at the top and then bending the bottom side of the 

cap a little bit open. 

Pull the two parts of the plug connection in the cord carefully apart. 

Remove the actuator by means of the bolts and nuts at the ends. 

Send the actuator to Wheelbase if it is defective. 

Demount the upper tube of the legrest by unscrewing the bolt of the rotation point. 

Remove the plate for the electrical contacts by removing the nut. 

Disconnect the electrical contacts by unscrewing the nuts/cross-head screws. 

Remove the vertical bolt/nut of the calf rest and remove it from its fastening. 

Unscrew the padding by unscrewing the two cross-head screws at the back side. 


24


Legrest Comfort 

see also: exploded view 

(see also: “electrically adjustable legrest” en “legrest (standard)”) 

The comfort legrest is provided with a gas spring, which helps lifting the legrest. 

To remove the gas spring, you must first place the legrest in its highest position by means of the 

control handle which sticks out of the rubber covering. 

Remove the rubber covering. 

Remove the bolt and the nut from the lower, thicker part of the gas spring. 

Turn the lock nut at the end of the thinner part of the gas spring a quarter of a turn. 

Unscrew the thinner part of the gas spring carefully from the control block. 

To remove the control block: unscrew the round knob from the handle and remove the bolt and the 

nut which are stuck through the block horizontally. 

The handle can now be taken out of the block by pulling the handle out through the wider part of 

the hole. 

When mounting, take care that the gas spring is turned into the block thus far, that the pawl just 

touches the handle. Then tighten the lock nut. 

Legrest ; electrically adjustable undivided 

(see also: exploded view) 

The legrest system can be removed entirely. 

Actuators can be removed without demounting the legrest. The best thing to do is to send a 

defective actuator to Wheelbase Products BV. 

Remove the bolt and nut from the underside of the vertical actuator (at the side of the frame), and 

disconnect the plug. 

Disconnect the plug of the horizontal motor. 

Loosen the fixing bolts (A) at the left and right under the front side of the seat frame, where the 

suspension elements have been pushed in the seat frame (also see the photo 'legrest suspension'). To 

do this you can best keep the legrest in horizontal position by hand. 

Then loosen the fixing bolts (B) at the bottom end of the square intermediate beam of the undivided 

legrest. 

Pull the suspension elements sideways from the seat frame and intermediate beam, meanwhile 

supporting the legrest. 

The suspension elements consist of two parts, its joint functions as rotation point. It can be 

decomposed by removing the bolt and nut. 

When mounting, take care of the nylon rings, one at the side of the nut and one between the two 

parts. 

Loosen the vertical actuator by ticking the shaft out of the fork, after removing the split pin. 

Remove the lower tube with the foot plate by unscrewing the two socket screws (C) at the front 

side. 

With this you also loosen the belt of the height adjustment. 

Remove the foot plate by loosening the two fixing screws in the rotation point (D) and ticking the 

shaft out of it. 

Unscrew the stainless steel sliding rod from the intermediate beam with the two countersunk socket 

screws on top. Take care not to lose the shaft of the belt guide (this is positioned by the two rods). 

Push the slide block from the sliding rods. 


25


Unscrew the horizontal motor from the flange at the intermediate beam by means of the four small 

socket screws at the head end of the motor. Take care not to lose the bronze bearing at the end. 

Remove the rotation point of the bronze bearing by unscrewing the two nuts. 

Mount in reverse order and take special care of the following: 

Placing the slide block over the sliding rods, and sticking the shaft through the rollers of the belt 

guide before mounting the sliding rods. 

The bevelled edge (if present) of the vertical actuator; it should be at the top side. 

Seat frame/seat unit ; removing the 

(see also exploded views) 

Remove the cord from the control panel and the control panel holder as described in "demounting 

the control panel holder". Cut the tie wraps with which the cord is tied to the seat frame. 

Remove the legrests. 

In case of electrically adjustable legrests: remove the cords from the actuator control module 

(remove the seat). Cut the tie wraps with which the cord is tied to the chassis. 

In case of electrically adjustable backrest: remove the cord from the actuator control module and cut 

the tie wraps with which the cord is tied to the chassis. 

Remove the spring clips from the ball joints of the tilting adjustment (A) at the front side of the seat 

frame and tick the joints carefully off the balls. 

Unscrew the two bolts/nuts at the bottom left and right back side, with which the seat frame is 

mounted to the chassis through the hinge plates (B). 

Remove the entire seat unit from the chassis. 

Seat height ; adjusting (standard wheelchair) 3 positions 

Standard the seat height is placed in the middle position. 

To adjust: 

Remove the seat. 

Remove the front bolts (A) from both hinge plates, with which the hinge plates are screwed to the 

frame. 

Loosen the rear bolts (B) one turn. 

Tilt the hinge plate forwards (lower seat height) or backwards (higher). 

Turn in the bolts again, but not tightly. 

Remove the rear bolts, tilt the hinge plate. 

Turn in the bolts again and screw them all tightly. 

Remove the spring clips from the upper ball joints of the tilting adjustment (C), under the front side 

of the seat. 

Loosen the lock nut and turn the joint higher or lower, tighten the lock nut. 


26


Seat width ; adjusting the 

see "armrest holder" 

Seat frame, seat depth ; adjusting/demounting of 

(See also exploded view) 

The seat depth can be adjusted because the seat frame consists of two parts. 

By moving the rear part, to which the back rest is mounted, to the front or to the rear, more seat 

depth is obtained. 

Moving, or demounting of the rear part becomes possible by unscrewing the two bolts at the left and 

right under the seat frame, where the front part can move over the rear part. 

The steel clamping plates with thread are located at the inside of this frame, at both sides. 

The galvanized middle beam for the mounting of the seat and the (electrical) tilting adjustment can 

be removed by unscrewing the two bolts at the bottom of the front part of the seat frame. 

Side cushion (padded) ; demounting the 

Side cushions are mounted at the stainless steel bars of the armrest by means of a stainless steel 

bracket and an aluminium clasping block. 

To remove the side cushions, you must remove the nut from the clasping block, which is visible just 

above the side cushion. 

The padded part is mounted to the bracket, which can now be removed, by means of two cross-head 

screws. 

The clasping block around the two steel bars can be removed by unscrewing the bolt from the angle 

adjustment of the armrest, pulling the armrest with the bars from the aluminium profile, and then 

sliding the clasping block off it. 

Mounting should take place in the reverse order. 

Tilting adjustment (electrical) without height adjustment 

(see also: exploded views) 

Rear wheel driven types without electrical height 

adjustment: 

The electric tilting adjustment consists of a vertically 

mounted actuator, under the front side of the seat 

fastened to the galvanized profile, and at the 

underside mounted in a U-shaped profile. 

This profile is screwed to the frame plate, and has 

three holes in it, corresponding to the standard, 3- 

position, height adjustment. 

B 

D 

K 

A 

K 

Front wheel driven types without electrical height adjustment: 


Place the tilting adjustment in its lowest position. 

Remove, if necessary, the actuator by removing the adjusting ring at the back side and ticking the 

shaft out, at the front side by removing the bolts from the front side of the actuator. The best thing to 


27

do is to send a defective actuator to Wheelbase Products BV. 


In order to remove the tilting adjustment, the seat unit has to be removed first. 

Therefore, disconnect all the plugs of the seat adjustments from the seat frame (control panel, 

legrests, back angle adjustment). 

Remove the spring clips from the upper ball joints (K) and tick the ball joints loose. 

Unscrew at the left and right the bolts and nuts (D) of the tilting rotation point on the hinge plate 

and take off the seat unit. 

The electrical tilting adjustment consists of a horizontally mounted actuator, mounted at the back 

side in an assembled steel frame. This sub frame can be mounted to the chassis at three different 

heights, corresponding to the standard height adjustments. 

Remove the sub frame by loosening the bolts (A) left and right at the back side (with which also the 

hinge plate is mounted to the frame), and the bolts (B) at the left and right, with which the two 

connecting lips of the sub frame are mounted to the chassis. 

Demount the sub frame by removing the bolts of the shaft from the rotation point. 

TIP 

The bearing bushes of the tilting adjustment are made of bronze and are selflubricating 

Only in exceptional cases the bearings or shaft have to be replaced. 

Tilting adjustment (electrical) in combination with height 

adjustment 

see also: exploded views 


Place the height adjustment in its highest position. 

Place the tilting adjustment in its lowest position. 

Remove, if necessary, the actuator by removing the adjusting ring at the back side and ticking the 

shaft out, at the front side by removing the bolts from the front side of the actuator. The best thing to 

do is to send a defective actuator back to Wheelbase Products BV. 

In order to remove the tilting adjustment, the seat unit has to be removed first. 

Therefore, disconnect all the plugs of the seat adjustments from the seat frame (control panel, 

legrests, back angle adjustment). 

Remove the spring clips from the upper ball joints (K) and tick the ball joints loose. 

Unscrew at the left and right the bolts and nuts of the tilting rotation point (at the same position (D) 

as in photo "tilting adjustment without height adjustment"). 

Take off the seat unit. 

Unscrew the bolts in the middle of the thick steel strip, which runs from the left to the right tilting 

rotation point. The mechanism of the tilting adjustment suspends from it. 

Unscrew the four bolts from the narrow and highest part of the height adjustment. 

Loosen the two bolts at the head end of the tilting adjustment a few turns. These bolts secure the 

shafts which join the height adjustment with the tilting adjustment. 

Tick the shafts out carefully and take out the tilting adjustment. 

Remove the arms by unscrewing the bolts from the pivot and ticking the shafts out. 

Mounting should take place in the reverse order. 


28


Tray ; attachment of the 

(see also exploded view) 

Remove the tray with the chromed supporting framework by loosening the star-shaped knob on the 

inserted tube at the left or right next to the armrest and then taking out the top forwards. 

Remove the inserted tube by loosening the two bolts and nuts with which it is fastened to the 

armrest. 

After unscrewing the countersunk screws out of the tray, the top can be removed. 

Tray ; attachment of the (controller in the middle) 

(See also “Attachment of the tray” and exploded view) 

If the tray has the control panel in the middle, then this control panel can be turned away. 

After unscrewing the four countersunk screws at the front middle of the tray, the unlocking of the 

turning movement can be removed entirely with a forward movement. 

With this, also the tray itself is free from the supporting framework. 

To remove the turning mechanism of the control panel and the control panel itself, you must 

unscrew the four countersunk screws which are located at the left and the right of the control panel. 

Disassemble the release by unscrewing the knob and the lock nut at the head end. Clean if 

necessary, and rub lightly with a lubricant. 

Tray ; attachment of the on two sides. 

See also: attachment of the tray 

However, now there is an insertion tube at both armrests. 

The tray is fastened with screws to the carrying tubes at the left and right side. 


29


Workshop section: electronics 

Control panel ; demounting 

Disconnect the plug from the control panel by pulling at the thickest part. Thus you unlock the plug. 

Unscrew the two socket screws (A) at the wider side of the control panel and take the control panel from its 

holder. 

Controller/ALM ; removing 

Remove the frame bag, it is attached by means of Velcro. 


Remove the two star knobs from the battery container and move it backwards. 

Disconnect the battery poles and remove the batteries. 

Remove the plugs on top of the controller as follows: 

TAKE CARE ! 

Pulling out the plug without pressing the interlocks may damage the plug and the 

controller 

The middle, large plug (to the control panel) has an interlock in the middle of the front side, 

under the plastic covering that covers the plug. Press it with a finger, while pulling carefully at the 

plug with your other hand. 

Remove the two large plugs of the motor power supply by pressing the two interlocks at the sides of both 

plugs, while pulling the plug out. The interlocks are under the plastic covering that covers the plug. 

Remove the round plugs by pulling the thicker part of the plug upwards, thus it will unlock itself. Never 

pull at the wire. 

The controller is screwed to the frame plate by means of bolts which are accessible from the outer side of 

the wheelchair (behind the frame bag, also see photo "battery container rails). The nuts are located at the 

left and right of the controller, at the inner side. 

Remove the green plug on the side of the ALM (Actuator & Lighting Module) by pulling it out in the 

direction of the controller. 

The ALM is screwed to the frame plate by means of bolts which are accessible from the outer side of the 

wheelchair (behind the frame bag, also see photo "battery container rails). 

Electrical diagram 

For the electrical diagram we refer to the documentation of the relevant manufacturer of the power 

supply/controller. This documentation can be ordered through Wheelbase Products, but also directly from 

the manufacturer. 

een basis om op te bouwen. 

30


Electronics trouble-shooting 

For solutions to problems with the electronics we refer to the documentation of the relevant manufacturer 

of the power supply/controller. This documentation can be ordered through Wheelbase Products, but also 

directly from the manufacturer. 

Head light/ blinker/ lighting unit ; Replacing 

A head light can be replaced by unscrewing the bolt (A) at the back side of 

the light. 

When mounting a new light, the wiring can remain in place and be 

reconnected to the light. 

A lamp can be replaced by unscrewing the small screw (B), turning the 

lamp 1/3 turn and taking it out. 

A 

B 

A blinker or tail light can be replaced by placing a screwdriver behind the 

orange cap at the location of the notch. After removing the lamp, the fitting can be unscrewed. 

The entire lighting unit can be replaced by unscrewing the two bolts at both sides. 

The wiring, provided that it is undamaged, can be reconnected to a new unit. 

Integrated controller 

The most simple version available is a version with an integrated controller. 

In this case there is no separate controller, and lighting or electrical adjustment is not possible. 

This control panel is mounted on a special type of holder (A) which is mounted to the armrest. 

Unscrew the bolts (B) to remove the control panel holder, and the nut at the end of the cable. 

Rear light unit ; removing the cover of the 

Loosen the two socket screws (A) on top of both ends of the lighting unit 

by means of a cross-head screwdriver. The bolts are better accessible after 

removing the caps of the blinkers by placing a screwdriver behind the 

orange cap at the place of the notch. 

Remove the cover with a tilting movement, the part at the inside of the 

frame should go up, and then you move the visible side of the cover over 

the nut of the shaft of the hinged support. 

A 

A 


31


Settings 

This documentation is added as an appendix to this manual. 

wiring ; repairing the 

WARNING ! 

always carry out repairs to the wiring with the battery poles disconnected. 

In case of multiple wire breakage or serious damage you should preferably mount (partly) new wiring. 

WARNING ! 

broken or damaged wiring may result in unexpected functioning of the wheelchair, 

electrical shock, fire and, with it, possible personal injuries! 

Small damage can be repaired as follows: 

Cut the damaged wire at the damaged spot. 

Remove 5-10 mm of the insulation at each end of the wire. 

Pull a suitable shrink tube around one of the ends. 

Solder the two parts together. 

Pull the shrink tube over the soldered joint and heat it. 


32

service manual - Handicare AS

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