Thread: 98 ml320 oil pan needs resealing
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Old 03-22-2006, 01:38 AM
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DR.DIESEL DR.DIESEL is offline
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Join Date: Mar 2003
Location: Puget Sound, Washington St.
Posts: 522
Don't forget the o-ring for the oil quality sensor that always weeps and
tricks techs into thinking the main pan is leaking.

SUBJECT:
Model 163.154/157/172/174/175
Model 164.175
Model 463.246/249
Leakage Between Oil Level Sensor and Oil Pan
If you receive customer reports in the above model vehicles of oil leakage between the oil level sensor and the oil pan, the cause maybe due to the sealing ring being damaged by the burr at the oil pan installation hole. To resolve, remove and replace only the sealing ring as per the parts information listed below. Lightly oil the sealing ring prior to installation.
Inspect the surface of the oil pan oil level sensor installation hole. If extreme roughness or sharp edges are found, de-bur the rough surface of the oil pan hole with an emery cloth.
Parts Information
Sealing ring
A023 997 43 48
or
Sealing ring
A024 997 70 48

Regards,
DR.D
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