Hummer H1 (1992-1998). Instruction - page 21

2-22. VALVE TRAIN REPAIR (Cont’d)

2-23. TORSIONAL DAMPER REPAIR

This task covers:

a. Cleaning

b. Inspection

INITIAL SETUP:

Tools

Equipment Condition

General mechanic’s tool kit:

Engine disassembled into subassemblies

automotive (Appendix E, Item 1)

(para. 2-15).

Manual References

T M 9 - 2 8 1 5 - 2 3 7 - 3 4 P

Clean torsional damper (1) in accordance with para. 2-9.

b. Inspection

NOTE

For general inspection instructions, refer to para. 2-10.

1. Inspect capscrew holes (4) for thread damage. Replace torsional damper (1) if threads are damaged.

2. Inspect front cover seal mating surface (2) for damage. Replace torsional damper (1) if damaged.
3. Inspect rubber insulator (3) between inner ring and torsional damper housing for cracks or damage.

Replace torsional damper (1) if cracked or damaged.

2-74

2-24. FLYWHEEL REPAIR

This task covers:

a. Cleaning

b. Inspection

INITIAL SETUP

Tools

Equipment Condition

General mechanic’s tool kit:

Engine disassembled into subassemblies

automotive (Appendix E, Item 1)

(para. 2-15).

Manual References

a. Cleaning

Clean flywheel (1) in accordance with para. 2-9.

b. Inspection

1.

2.

NOTE

For general inspection instructions, refer to para. 2-10.

Inspect flywheel (1) for damaged teeth (2). Replace flywheel (1) if teeth (2) are damaged.
Inspect flywheel (1) for damage. Replace if damaged.

2-75

2-25. ROCKER ARM COVER REPAIR

This task covers:

a. Cleaning

b. Inspection

INITIAL SETUP:

Tools

Equipment Condition

General mechanic’s tool kit:

Engine disassembled into subassemblies

automotive (Appendix E, Item 1)

(para. 2-15).

Manual References

Clean rocker arm cover (1) in accordance with para, 2-9.

NOTE

For general inspection instructions, refer to para. 2-10.

Inspect rocker arm cover (1) for cracks and sealing surface distortion. Replace if cracked, or sealing
surface is distorted.

2-76

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