Jeep Grand Cherokee WK. Manual — part 1226

INSTALLATION

INSTALLATION - CAMSHAFT CORE HOLE PLUG

1.

Clean core hole in block.

NOTE: Do not apply adhesive to the new core hole plug. A new plug will have adhesive pre-applied.

2. Install a new core hole plug at the rear of camshaft, using suitable flat faced tool. The plug must be fully seated

on the cylinder block shoulder.

INSTALLATION - CAMSHAFT

CAUTION: The 5.7L LX engine uses a unique cam-
shaft for use with the Multi Displacement System.
When installing a new camshaft, the replacement
camshaft must be compatible with the Multi Dis-
placement System.

1. Lubricate camshaft lobes and camshaft bearing

journals and insert the camshaft (figure1).

2. Install camshaft Tensioner plate assembly. Tighten

bolts to 28 N·m (250 in. lbs.) torque.

3. Install timing chain and sprockets (Refer to 9 -

ENGINE/VALVE

TIMING/TIMING

BELT/CHAIN

AND SPROCKETS - INSTALLATION).

4. Measure camshaft end play (Refer to 9 - ENGINE -

SPECIFICATIONS). If not within limits install a new
thrust plate.

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ENGINE - 5.7L SERVICE INFORMATION

WK

5. Install the oil pump (figure2) (Refer to 9 - ENGINE/LUBRICATION/OIL PUMP - INSTALLATION).

6. Install the oil pick up tube.

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ENGINE - 5.7L SERVICE INFORMATION

9 - 1501

7. Each tappet reused must be installed in the same position from which it was removed. When camshaft is

replaced, all of the tappets must be replaced.

CAUTION: The 5.7L LX engine uses both standard roller tappets and deactivating roller tappets, for use with
the Multi Displacement System. The deactivating roller tappets must be used in cylinders 1,4,6,7. The deac-
tivating tappets can be identified by the two holes in the side of the tappet body, for the latching pins.

8. Install tappets (2) and retaining yoke assembly (1). (Refer to 9 - ENGINE/ENGINE BLOCK/HYDRAULIC LIFT-

ERS (CAM IN BLOCK) - INSTALLATION).

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ENGINE - 5.7L SERVICE INFORMATION

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9. Install both left and right cylinder heads (4) (Refer

to 9 - ENGINE/CYLINDER HEAD - INSTALLA-
TION).

10. Install pushrods.

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ENGINE - 5.7L SERVICE INFORMATION

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