Great Wall service chassis and body Manual — part 54
BR-12
Brake System
Vacuum Booster
4.
Mount the pedal return spring.
5.
Mount the brake master cylinder
(see Page BR-8)
6.
Connect the hose and the vacuum booster.
7.
Fill the oil cup with brake liquid and exhaust the air in
braking system.
(see page BR-6)
8.
Check the liquid leakage;
9.
Check and adjust the brake pedal
(See page BR-5)
10. Check the operation
(See Page BR-6)
BR-13
Front Brake
Element figure
No. 2 lock plate of brake pad
No. 1 lock plate of brake pad
silent pad cluster
brake pad assembly
silent pad cluster
caliper body
No. 2 lock plate of
brake pad
No. 1 lock plate of
brake pad
long sliding caliper liner
sliding sleeve dust cover
caliper body
rectangular sealing ring
piston
piston dust cover
piston dust cover
snapping spring
sliding sleeve dust cover
short sliding caliper liner
short sliding caliper sleeve
sliding sleeve dust cover
vent screw
vent screw dust cover
long sliding caliper sleeve
sliding sleeve dust cover
Dr
Braking System
Front Brake (Dr)
BR-14
Brake pad change
Remark: Check the thickness of the friction material of brake
pad through the observation hole on caliper body after the
vehicle covers thirty thousand; if the thickness fails to fall
within the specified range, change is required. (If the brake is
used often, the thickness of friction materials of brake
pad is required to check whether it is within the specified
range after the vehicle covers more than ten thousand,
if not, change it.
1.
Tear down the front wheel;
2.
Check the thickness of friction material of brake pad:
Check the thickness of friction material of brake pad through
the observation hole on caliper body, if it fails to be within the
specified range, change it.
Min thickness: 2.0mm
3.
Raise the wheel-brake cylinder:
(a)
Tear down the short bolts of sliding sleeve;
(b)
Uplift the wheel brake pump and hang it with rope to
protect the brake oil pipe.
Remark: Do not loosen the brake oil pipe and the bleeding plug.
4.
Tear down the following parts:
(a)
Two braking pads;
(b)
Two silent pad clusters;
(c)
Four braking pad lock plates.
Braking System
Front Brake (Dr)
BR-15
5.
Brake disc measurement
(See page BR-17)
6.
Measure the radial run-out of the brake disc;
(See BR-18)
7.
Mount the lock plate of brake pad.
8.
Mount the new brake pad.
(a)
Mount the silent pad cluster on brake pads of both the
inner and outer sides;
Remark: Pollution of oil stain or coat is not allowed on the
work faces of brake pad or brake disc.
(b)
Draw out a little brake liquid from the liquid container to
prevent the brake liquid overflowing from the liquid
container;
(c)
Press in the piston with the hammer lever or similar tool.
9.
Mount the wheel-brake cylinder;
Mount and screw up the hex bolts (the hex bolts shall be coated
with the thread locking sealing agents.
Fastening torque
(38-50)Nm
Remark: only one brake pad can be changed in one time so as
to prevent the piston of other wheel being shot out.
Braking System
Front Brake (Dr)
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