ARMY TM 9-2815-260-24 AIR FORCE TO 38G1-126-2 MARINE CORPS TM 09244A/09245A-24 4-92 d.    Installation. (1) Apply loctite to bolts (3, Figure 4-60). CAUTION Install SAE Grade 8 or higher bolts in torsional damper.  Failure to comply could result in engine damage. (2) Position torsional damper (2) on crankshaft and install bolts (3).  Torque bolts to 44 lb-ft (60 Nm). (3) Re-torque bolts (3) to 59 lb-ft (80 Nm). (4) Install fan and fan drive belt, refer to TM 9-6115-672-14. 4.9.2.   CRANKSHAFT PULLEY. NOTE The following procedures require complete access to the engine.  If necessary, remove engine from generator set, refer to TM 9-6115-672-14.   Mount engine on repair stand (NSN 4910-01-016-1835 or equal) as outlined in paragraph 4.10. a.     Removal. (1) Remove torsional damper, refer to paragraph 4.9.1. (2) Remove crankshaft pulley (1, Figure 4-60). b.    Inspection. (1) Remove crankshaft pulley (1), refer to 4.9.2.a. (2) Inspect crankshaft pulley (1) for cracks and wear.  Replace as necessary. (3) Install crankshaft pulley (1), refer to 4.9.2.d. c.     Replacement. (1) Remove crankshaft pulley, refer to 4.9.2.a. (2) Inspect crankshaft pulley (1, Figure 4-60) and pulley key, refer to 4.9.2.b.  Replace if defective. (3) Install crankshaft pulley (1), refer to 4.9.2.d.