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POWER STEERING
4) Poor self centering of steering wheel
a)
Steering column and steering
Grease / oil steering column, Steering knuckles,
Linkages stiff.
idler arm, ball joints, stub axle etc.
b)
Steering gear boxes centre torque high.
Reset pressure point.
5) Inaccurate steering when driving straight ahead.
a)
Not enough oil in system / air in system.
External leakages in system to be arrested.
b)
Air in system.
Check cause of air intake and repair
(specially suction line)
c)
Mounting bolts of gear box loose.
Tighten the bolts to specified torque.
d)
Play in ball joints or steering linkages.
Install new joints.
e)
Play in gear box spool valves.
To be repaired at ZF authorised service centre.
6) Severe steering wheel jerks while steering.
a)
Not enough oil in system.
Top up oil and check for external leakages.
b)
Air in system.
Check cause of air intake and repair
(specially suction line).
c)
Play in gear box sector shaft.
Adjust centre torque.
d)
Play in ball and nut / worm of gear box.
To be repaired at authorised Service centre.
7) Torsional viabrations on steering wheel ( flutter)
a)
Unbalanced wheels / break drums.
Wheels to be balanced.
b)
Steering geometry not correct.
To be adjusted / corrected.
c)
Air in oil.
Leakages to be checked and corrected
(suction line).
8) Excessive play noticed at steering wheel.
a)
Steering gear mounting bracket loose.
Tighten the bolts to required torque.
b)
Play in universal joint.
Replace joint.
c)
Play on sector shaft.
Adjust centre torque.
d)
Play in worm and nut of gear box.
To be repaired at ZF authorised Service centre.