JAC HFC1061 Owner's Manual - page 32
fluid away.
因
Fill system with brake fluid.
因
Brake pedal's free play should be 5 -
8mm after adjusted, or it will cause main
booster work abnormally and make brake
drum over hot.
3. Running brake system
荫
Brief description of this system:
The running brake is hydraulic drum,
both front and tear are two leading
shoe brake . It is composed of bot鄄
tom plate, wheel cylinder, brake shoe
set with pad, and return spring set.
荫
Adjustment of running brake
The clearance between pad and
drum will be bigger and bigger due
to wear. In order to ensure brake
work well, adjust it regularly following
these steps.
Jack up the wheel which you want to
adjust and remove the seal plug. Dial
the adjusting gear of wheel cylinder
piston along the direction of arrow
near the adjusting hole on bottom
plate with special adjusting screw
and at the same time rotate the
brake drum until the drum not rotated
by hands. Then rotate the adjusting
gear back for 5 -9 teeth, keep the
pad 0.2 -0.45mm away from the
drum, so that the drum can rotate
freely again .
荫
Use & Check
Replace the pad which is worn out or
damaged. Before installed, the new
pad should be ground. Make sure that
the new pad has not oil coat, also has
not crack and chap and other flaw.
The clearance should be adjusted in
every time of maintenance . Check
drums with hands for temperature ev鄄
ery time you park, adjust the clear鄄
ance if the temperature is too high .
Check wheel cylinders for leakage ,
and replace leather gasket if leakage
is detected. Protect drums from be鄄
ing wrong result from over heat and
other reasons.
4. Vacuum booster
荫
Brief description of this system:
Booster of this series of truck is dual
diaphragm vacuum booster, which is
composed of return spring, control
valve, rubber diaphragm, noise elim鄄
ination board, and so on .
荫
Adjustment
Booster has been adjusted in factory,
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OWNER爷S MANUAL for
HFC1061,HFC1063,HFC1083
series trucks
1. parking brake drum
2. parking brake shoe with friction
disc assembly
3. parking brake adjusting bolt
assembly
4. parking brake shoe bottom
end drag spring
5. parking brake shoe compres鄄
sion spring;
6. parking brake shoe push rod
7. brake shoe seat
8. brake shoe compression
spring push rod
9. adjusting window lid
10. parking brake backing plate
assembly
11. parking brake shoe rocker
arm assembly
12. parking brake drag spring
13. parking brake shoe drag
spring
14. parking brake push rod sup鄄
port spring
15. card
16. grommet
don't disassemble it and protect the
diaphragm from being been dam鄄
aged.
Parking brake system
Brief description of structure:
Parking brake system is composed
of parking brake, control cable as鄄
sembly and control handle. Parking
brake is a brake of center-drum type
(picture below) that is mounted on
rear side of the transmission, acts on
the drive shaft and is mainly used in
parking as well as in emergency
working with foot brake. Control han鄄
dle and parking brake pull arm are
connected by flexible shaft.
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