125. Engine Front Cover Installation

Engine Front Cover Installation

Special Tools

EN 46109 - Guide Pins

For equivalent regional tools, refer to Special Tools (Tools and Equipment).




1. Install the 8 mm (0.315 in) guide from the EN 46109 - pins into the cylinder block positions as shown.




2. Install the NEW engine front cover to cylinder block seal.





Note: No RTV sealant should be visible in the M12 bolt holes (1) upon final assembly of front cover to engine.

3. Apply 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 (2). Apply a 5 mm (0.197 in) bead of RTV sealant on the engine front cover as shown (3).




4. Place the engine front cover (1) onto the EN 46109 - pins and slide into position.
5. Remove the EN 46109 - pins from the cylinder block.
6. Hand start all the engine front cover bolts.





Caution: Refer to Fastener Caution (Fastener Caution).

Note: Engine front cover bolts in the number (25) location are model dependent and may not apply.

7. Tighten the engine front cover bolts (1-23) in the sequence shown to 20 Nm (14 lb ft).

1. Tighten the engine front cover bolts (1-23) a second pass in sequence to 20 Nm (14 lb ft).
2. Tighten the engine front cover bolts (1-23) a third pass in sequence an additional 60 degrees.
3. Tighten the engine front cover bolts (24) to 15 Nm (11 lb ft).
4. Tighten the engine front cover bolts (25) to 65 Nm (48 lb ft).




8. Place the camshaft position actuator valves (2) in position on the front cover.
9. Install the camshaft position actuator valve bolts (1) and tighten to 10 Nm (89 lb in).




10. Install NEW O-rings on the camshaft position sensor.
11. Place the camshaft position sensors (2) in position on the front cover.
12. Install the camshaft position sensor bolts (1) and tighten to 10 Nm (89 lb in).