Rover 214 & 414 Service and Repair Manual - Rover club

9•18 Braking system
1 Servo unit
2 Master cylinder
3 Solenoid relay
4 Return pump
relay
5 Return pump
6 Solenoid valves
7 Modulator
block
8 Reluctor ring
9 Wheel sensor
10 System warning
lamp
switch terminals as soon as the pedal is
depressed. If necessary, reposition the switch
until it operates as specified.
6 Once the stop lamp switch is correctly
adjusted, hold the switch stationary and
tighten the locknut securely.
7 Connect the wiring connector to the switch
and refit the lower facia panel.
26 Anti-lock Braking system
(ABS) - component removal
and refitting
3
Modulator block
Removal
1 Disconnect the battery negative terminal
then undo the screw and remove the
modulator relay cover (see illustration).
2 Disconnect the wiring connectors from the
modulator and free the wiring from its
retaining clip on the unit.
3 Disconnect the sender unit wiring
connector and unscrew the master cylinder
reservoir filler cap. Place a piece of polythene
over the filler neck and securely refit the cap
(taking care not to damage the sender unit).
This will minimise brake fluid loss during
subsequent operations. As an added
precaution, place absorbent rags beneath the
modulator brake pipe unions.
4 Wipe clean the area around the brake pipe
unions then make a note of how the pipes are
arranged for reference when refitting.
Unscrew the union nuts and carefully
withdraw the pipes. Plug or tape over the pipe
ends and valve orifices to minimise the loss of
26.1 ABS system components
brake fluid and to prevent the entry of dirt into
the system. Wash off any spilt fluid
immediately with cold water.
5 Undo the earth lead retaining nut and
slacken the modulator block mounting nuts.
Disconnect the earth lead and remove the
modulator assembly from the engine
compartment. Do not attempt to dismantle
the modulator block assembly. Overhaul of
the unit is a complex job and should be
entrusted to a Rover dealer.
Refitting
6 Refitting is the reverse of the removal
procedure, noting the following:
a) Tighten the modulator block mounting
nuts to the specified torque.
b) Refit the brake pipes to their respective
unions and tighten the union nuts to the
specified torque.
c) On completion, bleed the braking system.
Front wheel sensor
Removal
7 Chock the rear wheels, firmly apply the
handbrake, jack up the front of the vehicle
and support on axle stands. Remove the
appropriate front roadwheel.
8 From inside the engine compartment,
disconnect the relevant sensor wiring
connector and displace the sensor wiring
grommet.
9 From underneath the vehicle, pull the
sensor wiring lead through the wing valance
then undo the sensor lead bracket retaining
bolts and remove the brackets.
10 Slacken and remove the two bolts
securing the sensor unit to the wheel hub then
remove the sensor and lead assembly.
1689 Rover 214 & 414 Updated Version 09/97
Refitting
11 Refitting is the reverse of the removal
procedure, noting the following:
a) Ensure that the sensor and hub sealing
faces are clean then refit the sensor and
tighten its retaining bolts to the specified
torque.
b) Ensure the sensor wiring is correctly
routed and all bracket retaining bolts are
tightened to the specified torque.
Rear wheel sensor
Removal
12 Chock the front wheels then jack up the
rear of the vehicle and support it on axle
stands. Remove the appropriate roadwheel.
13 Trace the wiring back from the sensor to
the wiring connector then free the connector
from its retaining clips and disconnect it.
14 Undo the sensor lead bracket retaining
bolts and remove the brackets.
15 Slacken and remove the bolt securing the
strap to the sensor cover then undo the
sensor cover retaining bolts and remove the
cover.
16 Undo the two bolts securing the sensor to
the rear hub assembly and remove it from the
vehicle, along with the shim which is fitted
behind it.
Refitting
17 Refitting is the reverse of the removal
procedure, noting the following:
a) Ensure the sensor and hub sealing faces
are clean, then install the sensor and shim
and tighten the sensor retaining bolts to
the specified torque.
b) Refit the sensor cover, cover strap
retaining bolt and sensor lead brackets,
then tighten all retaining bolts to the
specified torque.
c) Reconnect the sensor lead wiring
connector and refit the connector to its
retaining clip.
Reluctor rings
18 The reluctor rings are not available as
separate items. The front rings are available
only as an integral part of the outer constant
velocity joint assembly and the rear rings are
available only as an integral part of the rear
hub.
19 The front reluctor rings are situated on the
outer constant velocity joint and the rear
reluctor rings are part of the stub axle
assembly. Examine the rings for signs of
damage such as chipped or missing teeth and
renew as necessary.
Relays
20 Both the solenoid relay and return pump
relay are located in the modulator block
assembly. To gain access to them, undo the
relay cover retaining screw and lift off the
cover. Either relay can then be simply pulled
out of position. Refer to Chapter 12 for further
information on relays.