Man D 2840 LE 301, Repair Manual

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Removing and installing, repairing 3 − gear − oil pump
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Drain engine oil
Fig. 1
Danger:
The oil is hot, risk of scalding!
Do not touch the oil drain plug with bare
fingers. Oil is an environmental hazard.
Handle it with care!
Drain off engine oil from the oil pan and the oil
filters.
Use a vessel of sufficient size to ensure that the oil
does not overflow.
Caution:
Old oil is hazardous waste.
Observe safety instructions for the pre-
vention of environmental damage.
Remove oil pan
Fig. 2
Caution:
Oil pans are awkward to handle and
heavy.
They may contain residual amounts of en-
gine oil.
Use lifting gear or work with a helper.
Remove the mounting bolts from oil pan.
Take off oil pan.
Removing oil pump
Fig. 3
Remove the mounting bolts from the bracket and
from the oil pump.
Take off oil suction pipe.
Measure backlash between oil pump drive gear
and crankshaft gear and compare value with the
nominal value.
Replace worn gears.
Fig. 4
Unscrew the mounting bolts of the pressure relief
valve and oil pump.
The pressure relief valves are encapsulated.
Opening pressure, see “Service Data”.