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)N
m

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)