ARMY TM 9-2815-259-24
AIR FORCE TO 38G1-125-2
MARINE CORPS 09249A/09246A-24
4.8. FLYWHEEL AND HOUSING ASSEMBLY MAINTENANCE
The following procedures require complete access to the engine. If
necessary, remove engine from generator set, refer to TM 9-6115-671-14.
Mount engine on repair stand (NSN 4910-01-016-1835 or equal) as outlined
in paragraph 4.10.
Cleaning solvent is flammable and toxic to eyes, skin, and respiratory tract.
Skin and eye protection are required. Avoid repeated/prolonged contact.
Provide adequate ventilation. Failure to comply could result in serious
injury or death.
Compressed air used for cleaning can create airborne particles that may
enter the eyes. Never exceed 30 psi (207 kPa) of pressure. Eye protection
required. Failure to comply could result in serious eye damage or
(1) Thoroughly clean flywheel with solvent and dry with compressed air.
(2) Inspect flywheel for rust, corrosion, cracks, or other forms of damage. Clean or replace as
(3) Inspect ring gear (2, Figure 4-56) for worn or broken teeth. Replace ring gear if damaged, refer
(4) Check flywheel face flatness as follows:
Do not allow dial indicator to contact driving ring mounting holes. Failure
to comply could result in damage to dial indicator.
Attach magnetic base of dial indicator to flywheel housing (Figure 4-53). Position dial
indicator against driving ring mounting surface on flywheel.
(b) Rotate flywheel by turning crankshaft. Read total indicator movement and compare with
specifications given in Table 4-6. Replace as required.