Special Tools

J 42851 Front Cover Oil Seal Installer

1. Lubricate the outer sealing surface of the crankshaft front oil seal lightly with clean engine oil. DO NOT lubricate the inner portion of the seal.
2. Position the NEW crankshaft front oil seal in the engine front cover so the mark (1) on the rear of the seal is in the 12 o'clock position.

Second design oil seals do not have an alignment mark on the rear face. The seal may be installed in any position.




3. Using the J 42851 installer , install the crankshaft front oil seal (1).



4. Install the front cover locating pins (129), if required.




Note: The engine front cover must be installed and the fasteners tightened while the sealant is still wet to the touch.

5. Apply a 3-4 mm (0.12-0.16 in) bead of sealant GM P/N 12346141 (Canadian P/N 10953433), or equivalent, in 2 sealant points (1) on the engine block where the front cover meets the oil pan.



6. Apply a 3-4 mm (0.12-0.16 in) bead of sealant GM P/N 12346141 (Canadian P/N 10953433), or equivalent, in 2 sealant points (1) across the flange where the gasket ends at the bottom of the front cover.



7. Install the engine front cover gasket into the front cover.

Note: The following method must be used when installing the engine front cover. Failure to follow the instructions will push the sealant out, which may cause an oil leak.

8. Install the engine front cover.

8.1.	Hold the front cover (1) up to the crankshaft (2).

8.2.	Lift the front cover (1) while sliding the cover over the crankshaft (2).

8.3.	Slide the front cover towards the engine block (5) while keeping the cover raised.

8.4.	Lower the cover down over the dowel pin (4), allowing the front cover to rest on the sealant (3).

Caution: Refer to Fastener Caution in the Preface section.




9. Install the engine front cover bolts.

9.1.	Tighten the engine front cover bolts (1-6) in sequence a first pass to 6 N·m (53 lb in).

9.2.	Tighten the engine front cover bolts (1-6) in sequence a final pass to 12 N·m (106 lb in).




10. Inspect the camshaft position (CMP) sensor O-ring for cuts, cracks, tears, or damage. Replace the O-ring, as needed.
11. Apply a light film of clean engine oil to the CMP sensor O-ring.
12. Install the CMP sensor.

Caution: This bolt is a self-tapping bolt. If installing this bolt into a new component, installation of the bolt may be difficult. Ensure that the bolt is not over-torqued during the initial installation (thread cutting). Failure to limit torque can lead to bolt failure.

13. Install the CMP sensor bolt. Tighten the CMP sensor bolt to 12 N·m (106 lb in).