Hummer H3. Manual — part 538

electrical connector.

16. Install a NEW crankshaft front oil seal. Refer to Crankshaft Front Oil Seal

Replacement.

17. Install the water pump. Refer to Water Pump Replacement (With LH8) .

CRANKSHAFT REAR OIL SEAL REPLACEMENT

Tools Required

J 41479 Crankshaft Rear Oil Seal Installer. See Special Tools.

Removal Procedure

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

Fig. 175: Crankshaft Rear Oil Seal & Housing
Courtesy of GENERAL MOTORS CORP.

1. Remove the automatic transmission flexplate, refer to Automatic Transmission Flex Plate

Replacement.

2. Remove and discard the crankshaft rear oil seal (141).

Installation Procedure

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

Fig. 176: Identifying Oil Seal
Courtesy of GENERAL MOTORS CORP.

1. Inspect the seal and identify the part number markings for proper orientation.

IMPORTANT: For proper orientation, note the installation direction of the

oil seal. The oil seal is a reverse-lip design. The part number
is applied to the outside face of the seal, as shown.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3

Fig. 177: View Of J 41479 Cone & Bolts
Courtesy of GENERAL MOTORS CORP.

2. Install the J 41479 cone (2) and bolts onto the rear of the crankshaft. See Special Tools.

3. Tighten the bolts until snug. Do not overtighten.

4. Install the rear oil seal onto the tapered cone (2) and push the seal to the rear seal bore.

Install the oil seal with the part number markings facing away from the engine.

5. Thread the J 41479 threaded rod into the tapered cone until the tool (1) contacts the oil

seal. See Special Tools.

6. Align the oil seal into the tool (1).

7. Rotate the handle of the tool (1) clockwise until the seal enters the rear cover and bottoms

into the cover bore.

2008 Hummer H3

2008 ENGINE Engine Mechanical - 5.3L - H3