ENGINE LUBRICATING SYSTEM

The lubrication system is a full flow filtration pressure feed type. Oil from the oil pan is pumped by a internal gear type oil pump directly coupled to the crankshaft. Its pressure is regulated by a relief valve located in the Chain Case Cover. The oil is pumped through an oil filter and feeds a main oil galley. This oil gallery feeds oil under pressure to the main and rod bearings, camshaft bearings. Passages in the cylinder block feed oil to the hydraulic lifters and rocker shaft brackets which feeds the rocker arm pivots (Fig. 1).

OIL PAN SERVICE

REMOVAL

(1)Disconnect negative battery cable, remove engine oil dipstick.

(2)Raise vehicle. Drain engine oil.

(3)Remove oil pan screws and remove oil pan.

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 Nzm (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. Inspect condition of screen.

INSTALLATION

(1)Install oil pick-up tube into Chain Case Cover tighten screw to 28 Nzm (250 in.lbs.) (Fig. 2).

(2)Apply a 1/8 inch bead of Mopar Silicone Rubber Adhesive Sealant or equivalent, at the parting line of the chain case cover and the rear seal retainer (Fig. 3).

(3)Use a new pan gasket (Fig. 4).

(4)Install pan and tighten screws to 23 Nzm (200 in. lb.).

Fig. 2 Oil Pump Pick-up Tube Service

(5)Lower vehicle and install oil dipstick.

(6)Connect negative battery cable.