Chevrolet Silverado / GMC Sierra. Manual - part 275
Installation Procedure
IMPORTANT:
Do not lubricate the oil seal sealing surface.
Do not reuse the crankshaft oil seal.
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2
Fig. 139: View Of Crankshaft Front Oil Seal
Courtesy of GENERAL MOTORS CORP.
1. Lubricate the outer edge of the oil seal (1) with clean engine oil.
2. Lubricate the front cover oil seal bore with clean engine oil.
Fig. 140: Installing Crankshaft Front Oil Seal Using J 41478
Courtesy of GENERAL MOTORS CORP.
3. Install the crankshaft front oil seal onto the J 41478 guide. See Special Tools.
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2
4. Install the J 41478 threaded rod (with nut, washer, guide, and oil seal) into the end of the
crankshaft. See Special Tools.
5. Use the J 41478 in order to install the oil seal into the cover bore. See Special Tools.
1. Use a wrench and hold the hex on the installer bolt.
2. Use a second wrench and rotate the installer nut clockwise until the seal bottoms in the
cover bore.
3. Remove the J 41478 . See Special Tools.
4. Inspect the oil seal for proper installation.
The oil seal should be installed evenly and completely into the front cover bore.
6. Install the crankshaft balancer. Refer to Crankshaft Balancer Replacement.
CAMSHAFT POSITION ACTUATOR MAGNET REPLACEMENT
Removal Procedure
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2
Fig. 141: View Of CMP Actuator Magnet, Bolts, Gasket & Oil Seal
Courtesy of GENERAL MOTORS CORP.
1. Remove the water pump. Refer to Water Pump Replacement .
2. Disconnect the engine harness electrical connector from the camshaft position (CMP)
actuator magnet.
3. Remove the CMP actuator magnet bolts (751) and magnet (752).
4. Remove and discard the CMP actuator magnet gasket (753).
Installation Procedure
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2