Great Wall Hover. Manual — part 75
Brake-21
Assembly of pump
1. During the assembly, coat the guide pin with the proper vacuum
sili con based grease; coat the operating surface of piston and
square gasket with proper rubber lubricant.
2. Install the piston gasket and piston in the tong
3. Install the cylinder hole dustproof cover and wire clip in the
tong.
4. Install the rubber pin cover on the tong bracket.
Installation of brake caliper
1. Install the brake block
Brake-22
2. Install the piston gasket in the tong body.
a. Screw the bleed screw into the bleed hole;
b. Install the square gasket in the sealing groove of two cylinders of
pump respectively after coat its working surface with proper
rubber lubricant.
Tightening torque 7
10N
m.
3. Connect the brake pipeline
Connect the brake oil pipe to the tong.
Tightening force: 50
5N
m
4. Fill up the brake system with the brake fluid and drain the air
in the brake system.
5. Check for leakage of brake fluid.
Rear parking brake
pull-out piece
spring draw bar
hand brake
stay wire
front brake shoe
lower tension spring
clearance-adjusting bolt
clearance-adjusting gear
clearance-adjusting
bolt head
pull-out piece
spring seat
pulling arm pin
rear brake shoe
brake shoe pulling arm
saddle type washer
push pedal
push pedal
release spring
stopper
upper release spring
rear brake disc
Used component which can not be used any more.
Removal of rear brake
Remarks: When the brake torque of the hand brake cannot meet
the brake requirement, the thickness of the brake shoe gasket
shall be tested. If it is less than the minimum value of brake show
gasket, the brake shoe shall be replaced.
minimum thickness: 1.0mm
Brake-23
1. Remove the rear wheel
2. Remove the rear brake caliper
3. Remove the rear brake disc
Remarks: If the brake disc is difficult to remove, remove the
adjust ment spout plug, insert the screwdriver into the adjust
ment spout of the rear brake bedplate, Release the brake shoe
adjustment device through twisting the clearance-adjusting gear.
4. Remove the shoe plate, pull-out the piece spring , pull-out piece
spring seat, pull-out piece spring draw bar
5. Remove the lower tension spring and clearance-adjusting device
Use clipper to remove the extension spring, release the clearance
adjusting device and remove it.
6. Remove the two upper extension springs
7. Remove the brake shoe
a. Remove the brake shoe, baffle, baffle return spring.
b. Remove the band brake stay wire from the stay and brake pulling
arm.
Brake-24
8. Remove the parking brake pulling arm
Use the screw driver to remove the parking brake pulling arm
Check and maintain the components of brake
1. Check the dismantled components
Check to se whether the dismantled components are wearing, rusted
or damaged.
2. Measure the internal diameter of the brake disc
Standard inter diameter: 210mm
maximum internal diameter: 212mm
3. Measure the thickness of the brake shoe
standard thickness: 4.0mm
minimum thickness: 1.0mm
If the thickness of the brake shoe is less than the minimum value, or
there is uneven wearing, the brake shoe shall be replaced.
Remarks: If any one of the brake shoes needs to be replaced, all
the brake shoes need to be replaced to keep the even brake
performance.
4. Check whether the contact between the brake shoe gasket and
brake disc is sound.
If the contact between the brake shoe gasket and brake disc is bad, it
should use the brake shoe grinding device to repair or replace the
brake shoe assembly.
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