300CD (123.153) L5-3.0L DSL Turbo (617.952) (1982)
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Oil Filter: Service and Repair
NOTE: When removing oil filter, residue from gasket may remain stuck to flange surface of cylinder crankcase.
To prevent such residue from entering the clean oil duct (arrow) of cylinder crankcase during removal (e.g. by scraping), make sure to cover or close
bores first.
Residue from gasket dropping into clean oil duct may be flushed by the oil to the oil spray nozzles and plug the bore (1.5 mm dia.) there.
A plugged oil spray nozzle will definitely result in engine damage (seized pistons).
A 1st version
B 2nd version
The quality of the studs has been changed from 10.9 to 12.9 and the screw-in depth in oil filter housing extended from 16 mm to 24 mm (B).
The nuts were also adapted to the strength classification of the studs.
The modified studs are recognized by the pin (arrow) machined at their ends, the oil filter housing by the longer threaded eyes (a).
