Great Wall service chassis and body Manual — part 59
BR-32
8.
Mount on the adjuster;
Poke the brake shoes with the screwdriver and then mount the
adjuster.
9.
Mount the brake shoe retainer ring, bracing wire of
guide seat, self clearance-adjusting bracing wire and
the return spring.
(a)
Mount the brake shoe retainer ring, then the front return
spring.
(b)
Mount the return spring ,and then mount the forward
return spring.
10. Mount the self-clearance toggle plate:
(a)
Mount the toggle plate bracing wire torsion spring on the
rear brake shoe.
(b)
Mount the clearance self-adjusting toggle plate and hook
It with the clearance-adjusting bracing wire.
(9)
Hook the self clearance-adjusting toggle plate with the
bracing wire torsion spring
11. Check the operation of self-adjusting mechanism.
(a)
Drag the clearance-adjusting bracing wire backward as
shown in the drawing, then release it. Check the clear-
ance-adjusting bolts to see whether it is rotating. If not,
check the rear brake to verify which part has problem.
(b)
Adjust the clearance adjuster to shorten its length as
possible as can.
(c)
Mount the brake drum
forward
Braking System
Rear Brake (DR)
BR-33
12. Check the clearance between the brake shoe and the
brake drum:
(a)
Tear down the brake drum;
(b)
Measure the inner diameter of the brake drum and the
outer diameter of brake shoe to check whether the differ-
ence of the two diameters falls within the standard
clearance range.
Shoe clearance: 0.6mm
If it is not correct, check the parking brake system.
13. Mount the brake drum and the rear wheel; screw up
the nuts of rear wheel hub.
Fastening torque
(145 10)Nm
14. Fill the liquid container with brake liquid and exhaust
the air in braking system.
15. Check to see whether there is leakage of brake liquid.
Braking System
Rear Brake (DR)
BR-34
Rear brake
Element figure
Parts that cannot be reused after using.
wheel-brake cylinder cluster
observation hole cork
claming pin
observation hole cork
front brake shoe
pressure spring cap
lower tension spring
upper tension spring
clearance adjuster
rear brake shoe
brake lever
toggle plate
open retainer ring
clearance-adjusting spring
brake drum
pressure spring
Disassembly of Rear Brake
1.
Check the thickness of the brake shoe liner:
Tear down the observation hole cork I and measure the thickness
of brake shoe liner through the observation hole. If the thickness
if less than the min thickness, change the brake shoe.
Min thickness
1.0mm
2.
Tear down the rear wheel.
3.
Tear down the brake drum;
Remark: if the brake cannot be tear down easily, the following
steps shall be adapted:
(a)
Tear down the observation hole cork II by inserting the
screwdriver in the hole of brake bottom plate, and poke
the toggle plate from the self-adjusting screw arbor.
(b)
Loosen the brake shoe clearance adjuster with another
screwdriver by screwing the self-adjusting screw arbor.
SF
Braking System
Rear Brake (SF)
BR-35
4.
Tear down the front brake shoe:
(a)Tear down the tension spring from the front brake shoe;
(b)
Tear down the pressure spring cap of brake shoe, the
pressure spring and claming pin.
(c)
Tear down the lower tension spring from the front shoe
and the shoe pads.
(d)
Tear down the lower tension spring from the rear shoe.
5.
Tear down the rear brake shoe:
(a)
Tear down the shoe pressure spring cap, pressure spring
and claming pin.
(b)
Tear down the upper tension spring from the shoe pad.
(c)
Tear down the rear brake shoe and the clearance adjuster.
(d)
Tear down the parking brake bracing wire from the brake
shoe.
6.
Tear down the clearance adjuster from the rear brake shoe:
(a)
Tear down the clearance-adjusting spring.
(b)
Tear down the clearance adjuster.
Braking System
Rear Brake (SF)
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