15
N73B60 Engine - Diagnosis
Engine Block
Oil Sump
The oil sump consists of two parts. The upper section of the oil sump is made from cast
aluminum and is sealed to the crankcase with a rubber-coated sheet steel gasket. This
section of the oil sump has a cross shaped cut out oil filter element recess. The upper sec-
tion of the oil sump is inter connected to the oil pump and is sealed with a sealing ring. The
double panel (noise insulation) lower section of the oil sump is flanged to the upper section
of the oil sump.
• Remove oil sump assembly and oil pump.
Oil Filter
The canister type oil filter (3) is located under the engine by the oil sump. The support for
the oil filter is integrated in the rear oil pump cover. The oil filter housing (2 with o-ring) is
threaded into the rear of the oil pump cover through an opening in the oil sump.
AA ddrraaiinn pplluugg iiss iinntteeggrraatteedd iinn tthhee ooiill ffiilltteerr hhoouussiinngg
ffoorr ddrraaiinniinngg tthhee ffiilltteerr aasssseemmbbllyy bbeeffoorree tthhee hhoouuss--
iinngg iiss rreemmoovveedd ((11 wwiitthh oo--rriinngg))..
The filter element support dome contains an
over pressure relief valve. If the filter element is
blocked, this valve allows a bypass of unfiltered
engine oil around the element to supply lubrica-
tion to the engine.
Oil Sump Components
1. Upper Section of The Oil Sump
2. Oil Pump
3. Oil Level / Condition Sensor
4. Lower Section of The Oil Sump
5. Oil Filter Housing
6. Oil Drain Plug
42-03-65
42-02-77
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