S 320 LWB (140.033) L6-3.2L (104.994) (1995)
Condition:
Oil flows out through radial seal ring in steering shaft bearing cover.
Application:
Models 124 and 201
Cause:
Faulty seals (Gotze, Pionier-Laura).
Pressure peaks in lubricating circuit (since 3/89 relief restrictor fitted).
Remedy:
Install new seal (Freudenberg - color blue).
Up to 9/87 seal can be replaced without any problem (press seal into bearing cover from outside. Recognizable from locking ring
fitted).
As of 10/87 the steering gear must be disassembled. Seal can only be replaced if complete special tool available. See: Tools and
Equipment
Condition:
Knocking noise from steering gear when driving on uneven road surfaces and steering slightly turned.
Application
All Models
Cause:
Excessive play in steering gear causing tooth flanks to strike against each other.
Remedy:
Set steering gear friction value. See: Service and Repair
Condition:
Steering pressure point on left or right lock.
Application:
Model 140
Cause:
Thrust washer on control valve sticks. This can be detected as play during brief steering movements when vehicle is stationary.
Remedy:
Install new steering gear (production number above 92 73400), The production number is stamped on the flat surface of the steering
housing.
Condition:
Leaking power steering pump at seal of bearing flange Model or at bearing flange
Application:
Models 124 and 201
Cause:
Severe vibrations from belt drive and engine (particularly diesel engine.
Remedy:
Install ZF power steering pump with reinforced bearing flange (production breakpoint 11/89).
Check that the power steering pump is filled correctly. See: Service and Repair
Check connections on oil hoses for leaks.