MAHLE OX 1141D Installation Notes

Technical
Messenger
Issue no. 04/2023
Installation notes for the oil filter insert OX 1141D
There is a risk of inadequate lubrication if the
O-rings are mounted incorrectly.
The oil filter insert OX 1141D is supplied with all required sealing
rings. However, if they are not mounted in the correct position there
is a risk of inadequate lubrication and serious engine damage.
Correct fitting positions
The pin of the oil filter insert has three indentations. The O-rings
supplied may only be inserted into the front and rear seal grooves.
And since the O-rings have different diameters, the correct sea-
ling ring must be inserted into the correct groove. Considerable
damage may result if one of the O-rings is mistakenly fitted into the
central indentation instead of a seal groove.
Figure 1: Correctly mounted O-rings
Important!
Before installation, all seals on the oil filter insert and housing must be lubricated with clean oil to prevent damage and leaks
caused by dry assembly. The filter housing cover must be tightened to no more than the tightening torque specified by the
manufacturer.
✓
Figure 2: Incorrectly mounted O-rings
Damage due to incorrect installation
If the positions of the two O-rings are swapped or one of them is
mounted in the central indentation, this can lead to a leak inside
the oil filter, which will cause the oil filter housing to run empty
every time the engine is switched off. Additionally, it can result in a
delayed and possibly insufficient build-up of oil pressure the
next time the engine is started up, which in turn could cause
considerable engine damage.
If the O-rings are mounted dry, increased friction can damage the
rings or cause them to slip out of the groove. Overtightening the
cover gasket of the filter housing may also result in damage and
leaks (see also: TM 06/2012).
✗
Figure 3: Incorrectly mounted O-rings
✗
mahle-aftermarket.com