CP3581 - 1042 CG8 B1

84
2.00
8.00
15.00
Actuation
Balance Bars
CP5507-2 BALANCE BAR. CP5520-13 TRUNNION BALANCE BAR.
38.50
66.60
91.60
117.00
25.00
8.00 8.00
26.00
33.40 O/D
OF HOUSING
A-A
35.00
RUBBER
BOOT
49.00
56.00
30.00
38.00
15.00
23.00 THREAD LENGTH
5/16”x24UNF THREAD
Ø12.00
Ø10.00
BARREL NUT
SPHERICAL
BEARING
INTERNAL
BAR
WASHER
EXTERNAL
WASHER
Ø4.00 FOR
CABLE ADJUSTER
AP RACING CABLE
ADJUSTER CP2905-18
AND STEPPER MOTOR
KIT CP5500-14
AVAILABLE ON
REQUEST
M12x1.0 THREAD
1 TURN= 1.0MM OF
BEARING MOVEMENT
96.50
BRAKE CLEVIS
HOUSING GRUB SCREW
BALANCE
RUBBER BOOT
ADJUSTER SIDE
INSTALLATION.
1. Position housing into a
hole of required diameter
(33.50) in the brake pedal.
This hole should be
positioned such that under
normal braking loads the
centre is in line with the
master cylinder bores.
2. Weld or bond the
housing in position.
3. Grease the bore of the housing and the outer race of the
spherical bearing.
4. Insert the balance bar with the bearing attached, into the
housing with the adjuster end at the desired side.
5. Insert the 2 internal washers into the housing & retain with
circlips.
6. Place external washers over balance bar and then screw on
both clevis’s and barrel nuts until they start to bind. Then rotate
one of them back one turn.
Tip: Half turn adjustments can be made by taking one clevis
and barrel nut back to the end of the balance bar, fl ipping the
clevis over, and then threading the barrel nut back into place.
7. Stretch boots over the clevis’s and locate them on the
grooves on the housing and clevis’s.
8. Attach adjuster to the end of the balance bar using grub
screws.
9. Screw in push rods and adjust so that under normal braking
the balance bar lies perpendicular to the push rods and the
pedal is vertical. It is not important if the balance bar is not
square when released, but it should be whilst braking for
maximum effi ciency.
Tip: Adjustment of the push rods is made easier by running one
of the two nuts supplied with each master cylinder to the end of
the thread to allow the use of a spanner.
2.00
4 HOLES M4x0.7
6.0MM FULL
THREAD
48.52 57.00
APPLY LOAD THIS
DIRECTION ONLY
NB: CP5520-2 AVAILABLE WITHOUT
CLEVIS ASSEMBLIES
INSTALLATION.
A. Fitting the Balance Bar
to the Pedal
1. Make 4 holes in the
pedal of the recommended
dimensions The centre has
to be at the same height
as the master cylinder centreline when pedal is square to the
master cylinder.
2. In positioning the balance bar on the pedal, please take
notice of the direction of load, as shown. It may effect the
position you choose.
B. Fitting the Clevis to the Balance Bar
1. Install balance bar (1) inside the central trunnion sub-assy (2).
2. Push the clevis sub-assy (4) on to balance bar (1).
3. Push the washer (5) against the clevis sub-assy (4)
4. Push circlip (3) in to place on balance bar (1) to hold clevis
sub-assy (4) in place.
C. Setting up the Balance Bar
1. Install remote cable and retaining screws (6).
2. Install nuts provided on master cylinder pushrods.
3. Adjust the pushrods so that the balance bar is perpendicular to
the pushrods under maximum load. The system is then square.
It is not important that the system is square when released, but
it has to be under load.
For maximum effi ciency, it is recommended that the pedal is at
right angle with the pushrods under maximum braking load; and
also keeping the balance bar central with better selection of
master cylinder sizes helps to reduce ineffi ciencies. Also make
sue that the master cylinder pistons fully return before use. This
can be checked by feeling the pushrods for slight movements
there should not be any excessive loose movement.
www.apracing.com +44 (0)24 7663 9595
14.00
24.00
51.60
71.60
91.60
(3)
CIRCLIP - CP5517-123
BALANCE BAR
THREAD M14x1.0
12.00
24.00
17.00 30.00
(5) SPACER -
CP5517-124
5/16”x24UNF EACH CLEVIS
(2) CENTRAL
TRUNNION
SUB ASSEMBLY
(4) CLEVIS
SUB-ASSY
20.00
FULL THREAD
(6) CABLE SCREW
CP5500-113
39.50
(1) BALANCE BAR -
CP5517-127