Clutch
Brief description of the structure:
The clutch equipped for this series
truck is single -plate dry type di
鄄
aphragm spring clutch. Clutch facing
is composed of two friction discs and
clutch facing riveted with rivet.
Clutch pressure plate presses friction
discs on pillar by using pressure
produced by diaphragm spring to
produce jointing force.
Adjustment of the clutch operating
system:
1. Adjust the limit screw of the clutch
pedal to make sure that the free play
of the pedal is 3
耀
5mm.
2. Adjust the master cylinder of the
clutch: Loosen the locknut on the
push rod of the master cylinder, ro
鄄
tate the end of the push rod to con
鄄
tact gently with piston of the master
cylinder, then rotate the push rod for
3/4 circle in the contrary direction,
tighten the locknut of the push rod,
and the clearance
between the push rod and the piston
is about 0.5
耀
1mm.
3. Adjust the clutch release pump:
rotate the adjusting nut on pump's
push rod and have the clutch release
finger touch the clutch release bear
鄄
ing. Then rotate adjusting nut in the
contrary direction and make the free
play of clutch release fork reach to
2-3mm. Tighten the nut at last. Part
of the vehicle model use clutch
booster. Adjust the free play of the
rocker arm end on clutch release fork
to 3-5mm
4. Bleed air from wheel cylinder of
the clutch
Air or oil leakage in the hydraulic
pipeline of the clutch is not allowed,
or else, it can result in the disability
of the pedal, deficiency of the effec
鄄
tive travel and incomplete release of
the clutch etc., which make the
clutch not work normally. The work of
air bleeding should be completed by
two persons . One person presses
the clutch pedal and the other
bleeds the air.
30
OWNER
爷
S MANUAL for
HFC1061,HFC1063,HFC1083
series trucks
31
Take off the rubber cap of the air
bleed screw on the wheel cylinder,
link a plastic pipe on the air bleed
screw, put the other end of the pipe
into the container filled with brake
fluid, press the clutch pedal for sev
鄄
eral times, fill the master cylinder and
hydraulic pipeline with brake fluid,
then loosen the air bleed screw. Air
bubble can be puffed from the oil
ring if there is air in the pipeline. Be
鄄
fore the pedal reaches the floor,
tighten the air bleed screw. Repeat
the operation mentioned above until
there is no air bubble releasing.
Maintenance and adjustment of clutch
Long time use or incorrect adjust
鄄
ment and incomplete air bleeding of
the clutch can cause incomplete re
鄄
lease of the clutch and make the
clutch in half contact state for a long
time, which aggravate wearing of the
clutch pressure plate and friction lin
鄄
ings. Decrepitating, burning and ex
鄄
foliation of the friction lining, and
burnout of the release bearing can
even result in the abnormal operation
of the clutch. When doing mainte
鄄
nance, all kinds of clearances of the
clutch must be adjusted. When doing
class -three maintenance, clean the
master pump and distributor pump
and liquid reservoir tank, filling the
new lubrication into the inside of re
鄄
lease bearing.
1. release fork
2. dust cover
3. copper washer 4. release cylinder
5. wrench
6. soft plastic pipe
7. container
8. braking
