ENGINE LUBRICATION SYSTEM
The lubrication system is a full flow filtration pres-
sure feed type. Oil, stored in the oil pan, is taken in
and discharged by a gerotor type oil pump directly
coupled to the crankshaft and its pressure is regu-
lated by a relief valve. The oil is fed through an oil
filter and to the crankshaft journals from the oil gal-
lery in the cylinder block. This gallery also feeds oil
under pressure to the cylinder heads. It then flows to
each cylinder head through passages to camshaft
journals, the rocker shafts to the rocker arms, hy-
dralic lash adjusters (Fig. 1).
OIL PAN SERVICE
REMOVAL
(1) Disconnect negative battery cable, remove en-
gine oil dipstick.
(2) Raise vehicle. Drain engine oil.
(3) Remove oil pan screws and remove oil pan.
(4) Remove oil pick-up tube from oil pump body
(Fig. 2).
(5) Remove the windage tray/oil pan gasket (Fig.
4).
CLEANING AND INSPECTION
(1) Clean oil pan in solvent and wipe dry with a
clean cloth. Clean all gasket material from mounting
surfaces of pan and block.
(2) Inspect oil drain plug and plug hole for stripped
or damaged threads and repair as necessary. Install
a new drain plug gasket. Tighten to 27 NIm (20 ft.
lb.).
(3) Inspect oil pan mounting flange for bends or
distortion. Straighten flange if necessary.
(4) Clean oil screen and pipe in clean solvent. In-
spect condition of screen.
Fig. 1 Engine Oiling
Fig. 2 Oil Pump Pick-up Tube Service
9 - 62 3.5L ENGINE
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