LUBRICATION
DESCRIPTION
The lubrication system is a full-flow filtration,
pressure feed type. The oil pump body is mounted to
the engine block. The pump inner rotor is driven by
the crankshaft. A structural windage tray is used to
increase power by minimizing oil windage at high
engine RPM. An engine oil cooler is used on some
models.
OPERATION
Oil from the oil pan is pumped by a geroter type oil
pump directly coupled to the crankshaft (Fig. 82). Oil
pressure is controlled by a relief valve mounted
inside the oil pump housing. See (Fig. 82), (Fig. 83),
and (Fig. 84) for engine oil lubrication circuits.
Fig. 82 Cylinder Block Oil Lubrication System
1 - TO RIGHT CYLINDER HEAD 5 - OIL FILTER
2 - TO LEFT CYLINDER HEAD 6 - TO CRANKSHAFT MAIN JOURNALS
3 - OIL PUMP 7 - MAIN OIL GALLERY
4 - OIL PICKUP TUBE
9 - 58 ENGINE 2.7L LH
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