Repair Flywheel Group. (FIGURE 4-55)

TM 55-1905-223-24-4

4-12. Repair Flywheel Group. (FIGURE 4-55)

This task covers: Repair.

INITIAL SETUP

Tools

Equipment Condition

Tool kit, general mechanic's

Emergency generator set secured and

rail and marine diesel engines,

tagged "Out of Service"

(TM 55-1905-223-10).

Combination wrench set,

Flywheel housing group removed

metric 10 mm thru 24mm,

5120-01-046-4979

Materials/Parts

Internal gear P/N 3901774

Warning tags, Item 21, Appendix C

a. Inspect engine flywheel (2) for cracks, rust or corrosion. Replace if necessary. Refer to paragraph 3-29.

b. Inspect internal gear (1) for cracks, corrosion or broken gear teeth.

Replace as necessary.

CAUTION

Do not use a cutting torch to heat internal gear. The flywheel can be damaged.

(1) Heat outside diameter of internal gear (1) with a heating torch.

(2) Use a blunt chisel and hammer to remove gear from the flywheel (2).

NOTE

If an oven is not available, use a heating torch to heat inside diameter of

gear to 600 (316 ). Use tempil stick crayon or equivalent to check the

gear temperature step (3).

4-43