190E 2.3 (201.028) L4-2.3L (102.985) (1987)
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3. On the Vickers/LUK power steering pump, the fluid reservoir (35) can be removed. Replace O-ring.
On the ZF power steering pump, the fluid reservoir is cast on to the pump housing (2).
4. Unscrew bolts (25) and take off the bearing flange (4). Examine ground face of bearing flange (4) for signs of damage.
5. Take off pressure plate (3) and cam insert (6).
Examine ground face of pressure plate as well as sliding face of vanes on cam insert (6) for signs of scoring and wear.
There must not be any perceptible scoring present on the sliding face of the cam insert.
6. Take locking ring (18) off the drive shaft (11). Replace locking ring.
