Hummer H2. Manual — part 1884
OIL LEVEL INDICATOR AND TUBE INSTALLATION
Fig. 686: Oil Level Indicator & Tube
Courtesy of GENERAL MOTORS CORP.
1. Inspect the O-ring seal for cuts or damage. If the oil level indicator tube O-ring seal is not cut or
damaged, it may be reused.
2. Lubricate the O-ring seal with clean engine oil.
3. Install the O-ring seal onto the oil level indicator tube.
4. Install the oil level indicator tube into the engine block and rotate into proper position.
2004 Hummer H2
2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2
5. Install the tube bolt.
Tighten: Tighten the oil level indicator tube bolt to 25 N.m (18 lb ft).
6. Install the oil level indicator into the tube.
ENGINE FLYWHEEL INSTALLATION
Fig. 687: Engine Flywheel & Bolts (Automatic Transmission)
Courtesy of GENERAL MOTORS CORP.
NOTE:
Refer to Fastener Notice in Cautions and Notices.
IMPORTANT: The flywheel does not use a locating pin for alignment, and will not
initially seat against the crankshaft flange, but will be pulled onto the
crankshaft by the engine flywheel bolts. This procedure requires a three
stage tightening process.
2004 Hummer H2
2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2
1. Install the automatic transmission engine flywheel to the crankshaft.
2. Apply threadlock GM P/N 12345382 (Canadian P/N 10953489) or equivalent to the threads of the
flywheel bolts.
Fig. 688: Flywheel Bolt Tightening Sequence
Courtesy of GENERAL MOTORS CORP.
3. Install the engine flywheel bolts.
NOTE:
Refer to Fastener Notice in Cautions and Notices.
2004 Hummer H2
2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2
Tighten:
1. Tighten the engine flywheel bolts first pass in sequence to 20 N.m (15 lb ft).
2. Tighten the engine flywheel bolts second pass in sequence to 50 N.m (37 lb ft).
3. Tighten the engine flywheel bolts final pass in sequence to 100 N.m (74 lb ft).
CRANKSHAFT BALANCER INSTALLATION
Tools Required
z
J 41665 Crankshaft Balancer and Sprocket Installer. See Special Tools and Equipment .
z
J 42386-A Flywheel Holding Tool
z
J 45059 Angle Meter. See Special Tools and Equipment .
2004 Hummer H2
2004 ENGINE Engine Mechanical - 4.8L, 5.3L, and 6.0L - Hummer H2
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