ARMY TM 9-2815-259-24 AIR FORCE TO 38G1-125-2 MARINE CORPS 09249A/09246A-24 4-81 4.8.   FLYWHEEL AND HOUSING ASSEMBLY MAINTENANCE 4.8.1.   FLYWHEEL. NOTE 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. a. Inspection. _________ WARNING 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. _________ WARNING 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 blindness. (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 required. (3)     Inspect ring gear (2, Figure 4-56) for worn or broken teeth.  Replace ring gear if damaged, refer to 4.8.1.c. (4)     Check flywheel face flatness as follows: CAUTION Do not allow dial indicator to contact driving ring mounting holes.  Failure to comply could result in damage to dial indicator. (a) 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.