Engine JAC HFC4DA1-2C. Manual — part 148
FAX
FAX
FAX
FAX Front
Front
Front
Front Suspension
Suspension
Suspension
Suspension
---- 114
114
114
114 ----
Use
Use
Use
Use and
and
and
and Maintenance
Maintenance
Maintenance
Maintenance
1.
Inspect the wear condition of brake pad. After the
first 40000km or 24-month driving of the vehicle,
inspect the wear condition of friction linings and
measure the thickness of the most worn part of
brake caliper friction linings with the standard
value of 18mm and limit value of 17mm.When the
thickness of brake lining is lower than the limit
value, the brake lining should be replaced.
2.
In Level III maintenance, the front suspension may
be removed for cleaning of interiors of the steering
knuckle with bushing and wheel hub as well as
bearings. Please tighten bolts and nuts of each
component with specified torques.
3.
Precautions:
The vehicle loading should not exceed the max.
loading weight.
Diagnosis
Diagnosis
Diagnosis
Diagnosis and
and
and
and Testing
Testing
Testing
Testing
Inspection
Inspection
Inspection
Inspection and
and
and
and Maintenance
Maintenance
Maintenance
Maintenance of
of
of
of Front
Front
Front
Front Suspension
Suspension
Suspension
Suspension
1.
Special measuring apparatuses and tools should be
applied in part inspection. For damaged parts, carry
out maintenance or replacement according to
relevant requirements. In the case of one of the
matching parts is worn and its clearance exceeds the
specified one, please replace this worn part together
with its matching part according to relevant
requirements. Measure the starting torque of the
front wheel hub at wheel bolts, it should be 17 ~
25N.m.
2.
From the point of view of preventive maintenance,
some parts which are still in maintenance or within
wear limit should be replaced before exceeding the
limit.
3.
Carry out appearance inspections of all parts with
specified visual method or red pigment penetration
method. In the case of following abnormalities in
part outside surfaces, carry out maintenance or
replacement
for
relevant
parts
according
to
corresponding
requirements:
Abnormalities
�
Failure or fatigue (in helical spring)
�
Bending deformation (generally in steering
knuckle)
�
Abnormal noise(for bearings)
�
Looseness (in bolts of anti-roll bar and lower
swing arm)
�
Discoloration or seizure(for steering knuckle
ball joint etc.)
�
Rusting
�
Deterioration(for brake lining)
4.
For all rubber parts like oil seals, gaskets,
bushings,etc., they should be replaced with new
ones
after
removal.
For
standard
parts
like
pre-riveted nuts and bolts with rubber, they are not
reusable.
5.
Abnormal sound is a kind of noise, mainly
appearing as abnormal sounds like clash or harsh
screaming,etc. under different service conditions
(like vehicle speed or road
conditions). Some of
these sounds may fade out with running-in while
some may increase gradually due to improper
adjustment in assembling. On condition that the part
is qualified, adjustment of part assembly clearance
may be taken as solution.
FAX
FAX
FAX
FAX Front
Front
Front
Front Suspension
Suspension
Suspension
Suspension
-115
115
115
115 -
Fault
Fault
Fault
Fault Diagnosis
Diagnosis
Diagnosis
Diagnosis
Common
Common
Common
Common Fault
Fault
Fault
Fault Diagnosis
Diagnosis
Diagnosis
Diagnosis Table
Table
Table
Table
Fault Symptom
Possible Cause of fault
Troubleshooting
Arduous steering
No power steering
Repair or replace
Improper front wheel alignment
Adjust
Excessively low tire pressure
Carry out tire inflation
Steering exceeding the lower swing arm ball joint
Replace
Poor return
Improper front wheel alignment
Adjust
Fault in the shock absorber
Repair or replace
Wear or damage in the front anti-roll bar
Replace
Wear or damage in the helical spring
Replace
Wear in the lower swing arm bushing
Replace
Abnormal tire wear
Improper front wheel alignment
Adjust
Excessively low or high tire pressure
Adjust the tire pressure
Fault in the shock absorber
Repair or replace
Vehicle deviation
Improper front wheel alignment
Adjust
Insufficient steering resistance of the lower swing arm
ball joint connection
Replace
Looseness or wear in the lower swing arm bushing
Replace
Unilateral vehicle deviation
Improper front wheel alignment
Adjust
Insufficient steering resistance of the lower swing arm
ball joint connection
Replace
Bending of the lower swing arm
Replace
Wear or damage in the helical spring
Replace
Steering wheel fight
Fault in the shock absorber
Repair or replace
Insufficient steering resistance of the lower swing arm
ball joint connection
Replace
Looseness or wear in the lower swing arm bushing
Replace
Wear or damage in the helical spring
Replace
Wear or damage in the front anti-roll bar
Replace
Looseness in mounting screws of the steering gear
Repair
Improper front wheel alignment
Adjust
Vehicle sinkage
Vehicle body welding failure
Repair
Wear or damage in the helical spring
Replace
Fault in the shock absorber
Repair or replace
FAX
FAX
FAX
FAX Front
Front
Front
Front Suspension
Suspension
Suspension
Suspension
---- 116
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116
116 ----
Removal
Removal
Removal
Removal and
and
and
and Installation
Installation
Installation
Installation of
of
of
of Subframe
Subframe
Subframe
Subframe
Removal
1.
Disconnect the negative cable of battery.
2.
Place the steering wheel in the center and lock it up
in the position of straight-ahead.
3.
Remove track bolts for fixing the steering column
onto the cross shaft. Rotate clamped plates to make
them separated.
4.
Loosen front wheel nuts and lift the vehicle.
5.
Remove the front wheel.
6.
Remove the brake hose from the shock absorber.
FAX
FAX
FAX
FAX Front
Front
Front
Front Suspension
Suspension
Suspension
Suspension
-117
117
117
117 -
Removal
Removal
Removal
Removal and
and
and
and Installation
Installation
Installation
Installation of
of
of
of Subframe
Subframe
Subframe
Subframe (Continued)
(Continued)
(Continued)
(Continued)
Note:
Note:
Note:
Note:
Mounting bolts on the top of the brake caliper
can not be loosened completely until the
complete removal of the brake caliper has been
done.
7.
Remove the brake caliper.
Hang the brake caliper up to avoid brake hose
damage.
8.
Remove cotter pin and castle nuts for fixing the
steering tie rod onto the steering knuckle. (Discard
the removed cotter pin)
Note:
Note:
Note:
Note:
In the separation of the steering tie rod end from
the steering knuckle, sealing protection should be
carried out for the ball joint at any time.
9.
Remove the ball joint of the steering tie rod from
the steering knuckle.
10. Remove the front anti-roll bar link from the lower
swing arm.
11. Support the lower swing arm assembly.
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