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CAMSHAFT
REMOVAL
REMOVAL - CAMSHAFT CORE HOLE PLUG
CAUTION: Do not damage the rear surface of the camshaft or the core plug sealing surface, when removing
the core plug.
1. Remove the rear cam bearing core plug.
REMOVAL - CAMSHAFT
1. Remove the battery negative cable.
2. Remove the air cleaner assembly. (Refer to 9 -
ENGINE/AIR INTAKE SYSTEM - REMOVAL)
3. Drain coolant. (Refer to 7 - COOLING - STAN-
DARD PROCEDURE)
4. Remove the accessory drive belt. (Refer to 7 -
COOLING/ACCESSORY DRIVE/DRIVE BELTS -
REMOVAL)
5. Remove the generator.
6. Remove the A/C compressor, and set aside.
7. Remove the radiator (Refer to 7 - COOLING/EN-
GINE/RADIATOR - REMOVAL).
8. Remove intake manifold (Refer to 9 - ENGINE/
MANIFOLDS/INTAKE MANIFOLD - REMOVAL).
9. Remove cylinder head covers (Refer to 9 -
ENGINE/CYLINDER HEAD/CYLINDER HEAD
COVER(S) - REMOVAL).
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10. Remove both left and right cylinder heads (4)
(Refer to 9 - ENGINE/CYLINDER HEAD -
REMOVAL).
11. Remove the oil pan (Refer to 9 - ENGINE/LUBRI-
CATION/OIL PAN - REMOVAL).
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12. Remove timing case cover (1) (Refer to 9 - ENGINE/VALVE TIMING/TIMING BELT / CHAIN COVER(S) -
REMOVAL).
13. Remove the oil pick up tube.
14. Remove the oil pump (Refer to 9 - ENGINE/LUBRICATION/OIL PUMP - REMOVAL).
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15. Remove timing chain (2) (Refer to 9 - ENGINE/
VALVE TIMING/TIMING BELT/CHAIN AND
SPROCKETS - REMOVAL).
16. Remove camshaft tensioner/thrust plate assembly.
NOTE: Identify lifters to ensure installation in original location.
17. Remove the tappets (2) and retainer (1) assembly.
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18. Install a long bolt into front of camshaft to aid in
removal of the camshaft. Remove camshaft, being
careful not to damage cam bearings with the cam
lobes.
INSPECTION
1. The cam bearings are not serviceable. Do not attempt to replace cam bearings for any reason.
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.
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INSTALLATION - CAMSHAFT
CAUTION: 5.7L engines equipped with MDS uses a
unique camshaft for use with the Multi Displace-
ment System. When installing a new camshaft, the
replacement camshaft must be compatible with
the Multi Displacement System.
1. Lubricate camshaft lobes and camshaft bearing
journals and insert the camshaft (figure1).
2. Install camshaft Tensioner plate assembly. Tighten
bolts to 28 Nꞏm (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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5. Install the oil pump (figure2) (Refer to 9 - ENGINE/LUBRICATION/OIL PUMP - INSTALLATION).
6. Install the oil pick up tube.
7. Each tappet (2) reused must be installed in the same position from which itwasremoved.When camshaft is
replaced, all of the tappets must be replaced.
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CAUTION: 5.7L engines equipped with MDS uses both standard roller tappetsand deactivating roller tap-
pets, for use with the Multi Displacement System. The deactivating rollertappets must be used in cylinders
1,4,6,7. The deactivating tappets can be identified by the two holes in theside 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).
9. Install both left and right cylinder heads (4) (Refer
to 9 - ENGINE/CYLINDER HEAD - INSTALLA-
TION).
10. Install pushrods.