Engine Lubrication: Testing and Inspection

CHECKING OIL PRESSURE

- M40 / M42 / M43 / M43TU / M44 -






Version with central screw:

Unscrew oil-filter cover

Note:
Oil flows from oil-filter housing into oil pan.

Installation:
Replace sealing ring.







Installation:
Replace sealing ring in oil-filter cover and sealing ring on bolt.






Check/replace sealing rings on special tool 11 4 170. Install special tool 11 4 170.

Tightening Torque:
8mm Bolt = 22Nm. - (16 ft.lbs).
10mm Bolt = 33Nm. - (24.5 ft.lbs).
12mm bolt = 33Nm. - (24.5ft.lbs.).






Connect special tools 13 3 061/063.
Start engine and check engine oil pressure.

Oil pressure at idle speed with engine at operating temperature = 0.5 bar - (7.25 psi.)
Regulated Pressure = 4.3 ± 0.2 - (62.36 ± 3 psi.)






Version with screw cap:

Loosen the oil filter cap using special tool 11 7 331.

Note:
Oil flows from oil-filter housing into oil pan.


Installation:
Tightening Torque:
Screwed on cover = 22Nm. - (16 ft.lbs.).






Installation:
Replace sealing rings.






Check seals on special tool 11 7 332 and replace if necessary.






Instead of the oil filter cover, screw special tool 11 7 332 onto the oil filter housing and tighten using special tool 11 7 331.


Connect special tools 13 3 061/ 063. Start engine and check engine oil pressure.

Oil pressure at idle speed with engine at operating temperature = 0.5 bar - (7.25 psi.)
Regulated Pressure = 4.3 ± 0.2 - (62.36 ± 3 psi.)