Engine - Oil Filter Element Leak
85bmw05GROUP 11 Engine
Bulletin Number 11 08 85 (1002) Page 1 of 2
Montvale, NJ March 1985 Technical Dept.
This Service Information Bulletin supersedes S.I. 11 01 85 (965) which should be removed from your S.I. binder and discarded.
This S.I. deletes the oil pump cover part number which is not applicable to the M30 engines of the E3, E9 and E12 Series.
SUBJECT: Engine oil leaks
ENGINES: M 10 and M 30
Complaint: Oil leaks at oil filter housing
Cause: Oil may leak out of the oil filter element due to very high pressures in the lubricating system while starting at low outside temperatures and accelerating the engine after it has started.
Remedy: Provided that
^ engine oil viscosity corresponds to seasonal temperature range;
^ oil filter, sealing ring and flange are undamaged;
^ oil filter is properly installed and tightening torque is correct
then the oil pump cover of the existing engine oil pump must be replaced with a cover having an eight (8) bar relief valve (see chart).
Note: The modified pump cover was introduced in production as of 10/83.
Warranty
Status: Reimburseable under the applicable BMW Limited Warranty only.
Flat Rate Operation: 11 41 000 plus 4 FRU WT for inspecting the oil pump and installing a new cover. (Refer to the applicable Repair Manual section regarding overhauling the oil pump.)
Defect Code: 00 00 11 58 00