Chevrolet Silverado / GMC Sierra. Manual — part 282
2. Tighten the valve a final pass and additional 90 degrees using J 45059 . See Special
Tools.
9. Install the oil pump. Refer to Oil Pump, Screen, and Crankshaft Oil Deflector
Replacement.
CRANKSHAFT REAR OIL SEAL REPLACEMENT
Special Tools
J 41479 Crankshaft Rear Oil Seal Installer. See Special Tools.
Removal Procedure
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2
Fig. 162: View Of Crankshaft Rear Oil Seal
Courtesy of GENERAL MOTORS CORP.
1. Remove the engine flywheel. Refer to Automatic Transmission Flex Plate Replacement.
2. Remove the crankshaft rear oil seal (1) from the rear cover.
Installation Procedure
IMPORTANT:
The flywheel spacer (if applicable) must be removed prior to
oil seal installation.
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2
Fig. 163: View Of Crankshaft Rear Oil Seal
Courtesy of GENERAL MOTORS CORP.
1. Lubricate the outside diameter (OD) of the oil seal (1) with clean engine oil.
DO NOT allow oil or other lubricants to contact the seal surface.
Do not lubricate the oil seal inside diameter (ID) or the
crankshaft surface.
Do not reuse the crankshaft rear oil seal.
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2
2. Lubricate the rear cover oil seal bore with clean engine oil.
DO NOT allow oil or other lubricants to contact the crankshaft surface.
Fig. 164: Installing Crankshaft Rear Oil Seal Using J 41479
Courtesy of GENERAL MOTORS CORP.
3. Install the J 41479 tapered cone (2) and bolts onto the rear of the crankshaft. See Special
Tools.
4. Tighten the bolts until snug. Do not overtighten.
5. Install the rear oil seal onto the tapered cone (2) and push the seal to the rear cover bore.
6. Thread the J 41479 threaded rod into the tapered cone until the tool (1) contacts the oil
seal. See Special Tools.
2008 Hummer H2
2008 ENGINE Engine Mechanical - 6.2L - H2
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