Engine Front Cover Installation

Tools Required: 

EN 46109  Guide Pin Set

Fig 1: Installing EN 46109 Into Cylinder Block
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1. Install the 8 mm (0.315 in) guide from the EN 46109  into the cylinder block positions as shown.
Fig 2: Removing & Installing Engine Front Cover-To-Cylinder Block Seal
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2. Install the NEW engine front cover to cylinder block seal.
Fig 3: Applying Sealant To Engine Front Cover
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3. Place a 3 mm (0.118 in) bead of RTV sealant, GM P/N 12378521 (Canadian P/N 88901148) or equivalent, on the engine front cover as shown (1).
Fig 4: Removing & Installing Engine Front Cover
Courtesy of GENERAL MOTORS CORP.
4. Place the engine front cover onto the EN 46109  and slide into position.
5. Remove the EN 46109  from the cylinder block.
Fig 5: Removing & Installing Engine Front Cover Bolts
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NOTE: Refer to Fastener Notice in Cautions and Notices.
6. Hand start all the engine front cover bolts.
Fig 6: Identifying Engine Front Cover Bolt Tightening Sequence
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7. Tighten the engine front cover bolts in the sequence shown.

   Tighten:  Tighten the engine front cover bolts in the sequence to 23 N.m (17 lb ft).

Fig 7: Removing & Installing Camshaft Position Sensors
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8. Install NEW O-rings on the camshaft position sensor.
9. Place the camshaft position sensors in position on the front cover.
10. Install the camshaft position sensor bolts.

    Tighten:  Tighten the camshaft position sensor bolts to 10 N.m (89 lb in).

Fig 8: Removing & Installing Camshaft Position Actuator Valves
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11. Place the camshaft position actuator valves in position on the front cover.
12. Install the camshaft position actuator valve bolts.

    Tighten:  Tighten the camshaft position actuator valve bolts to 10 N.m (89 lb in).