Engine - M20 Oil Filter Housing Leak

91bmw01

Group 11 Engine


Bulletin Number 11 09 90 (3137) Page 1 of 2


Woodcliff Lake, NJ January 1991 Service Engineering


This Service Information bulletin supersedes orange S.I. 11 09 90 (3137) dated October 1990. Please remove and discard S.I. 11 09 90 (3137) dated October 1990 from your S.I. binder.

SUBJECT: Oil Filter Head Leak

ENGINES: All M20 (B25 with engine oil cooler) and S14 (M-power)

Situation: A repair kit (Part Number 11 42 9 059 338) has been developed to eliminate oil leaks coming from the control valve cover area of the oil filter housing.

Correction: An O-ring with improved material quality (Viton) has been phased into production during the first week of November 1990.





The new repair kit (consisting of 1 Viton O-ring, 1 cover and 1 snap ring) must be installed whenever an oil leak is detected coming from the control valve cover of the oil filter housing (see illustration). This repair kit will eliminate the need to replace the complete oil filter housing and can be installed without removing the oil filter housing from the engine.

Procedure: General Information

^ Clean oil filter head cover area.

^ Clamp the control valve cover using a 4 inch "C" clamp and lift snap ring out of its seat using a small bladed screwdriver or similar tool.


^ Carefully remove the control valve cover with the O-ring. Catch escaping engine oil.

Caution: The cover is spring loaded.

^ Replace the O-ring, cover, and snap ring included in the repair kit.

Note: On S14 engines (M3 vehicles), only the O-ring and snap ring should be replaced since the control valve cover differs in design from that of the M20 engines.

^ Run the engine to operating temperature (80~ C oil temperature) and check control valve cover area for leaks.

^ Check engine oil level and correct if necessary.

Parts
Information: The repair kit can be ordered under part number 11 42 9 059 338.

Warranty
Information: Covered under the terms of the applicable BMW New Car Limited Warranty.

Defect code: 11 42 00 48 00

Labor operation: 00 50 249

Labor allowance: 325i (all) 7FRU
M3 10 FRU

Note: Labor allowance includes all related associated work:

M3 models ^ removing and installing intake manifold
^ removing and installing oil dipstick guide tube and replacing O-ring on guide tube.

325i/ix models ^ removing and installing splash guard for under side of engine where applicable.
^ loosening A/C compressor mounting bolts and laying compressor out of the way (lines remain connected to compressor).

Any questions regarding warranty coverage should be discussed with your District Service Manager.