Ref.: MEL-WA(3D HCV) - OM Ver.1.7
125
9. TROUBLE SHOOTING
The common troubles and error messages which can be attended by the users are listed in the
table given below.
For Troubles and Error messages other than that are listed in the table contact the Service
Engineer for Trouble shooting.
The Service Engineer may ask for information to help in diagnosing the service
concern. Conveying this information to the Service Engineer prior to servicing can help
to expedite service to your equipment
9.1.
ALIGNMENT LCV
Sl.
No.
Trouble
Causes
Remedies
1
Car pulling
towards one
side
Misaligned Rear axle (ie.,
unequal Rear Toe).
Rear axle is not perpendicular
to Geometric Centre Line
Check the Rear suspension for worn out
control arm bushings or sagged springs
Setback
Check the position of the Front wheels are in
line
Improper Camber setting.
Car pulls sideway with more
positive Camber
Check for worn out ball joints or control arm
bushings and sagged or broken springs
Uneven tyre pressure.
Car pulls sideway with low
inflation
Check both tyres are with same pressure
Mismatched tyre sizes.
Steering pull due to mixing of
Radial & Normal tyres and
cross ply
Both Front tyres must be of same size, same
design & should have approx. same amount
of thread wear
Incorrect Caster setting
Caster must be same on Front wheels
Check for worn out Control arm worn strut
rod bushings
Dragging brakes and car pulls
sideway
Check for corroded brake caliper piston and
misadjusted emergency brake cable
Power steering problem
Check for uneven Steering balance of Front
wheels in jacked up condition and run the
engine. The steering should not turn one
side due to leak in Control valve. The
steering effort should also be equal in both
directions
Steering problem with tyre
Check for faulty tyre construction
2 Car wanders
Loose steering parts
Inspect Tie rod ends, Idler arm and steering
gear mountings
Worn out steering gear
Adjust if possible. Else replace it
Vehicle skids while applying
brake
Check for worn out strut or Control arm
bushings
Loose Wheel bearings
Remove the loose bearing and inspect for
damages. If so, replace it
3
Steering
wheel not
centered
Toe not adjusted equally
Make the length of Tie rods equal
Misaligned Rear axle
Check the rear axle alignment, worn out Rear
axle mountings, Sagging springs or collision
damage
1.
If “Runout Compensation”
skipped.
2.
If “Ride Height” Value
skipped.
3. After Caster adjustment,
Redo process not carried
out
1.
Runout compensation to be done
compulsorily
2.
“Ride Height” Value should be entered
3.
After Caster adjustment Redo process
should be carried out compulsorily
