TM-9-2320-280-20 HMMWV Technical Manual Unit Maintenance Volume 2 Download
Page 167 of 953
3-82. DRIVEBELTS ADJUSTMENT (Cont’d) TM 9-2320-280-20-2 Change 2 3-141 FOLLOW-ON TASKS: • Connect battery ground cable (para. 4-73). FOLLOW-ON TASK • Lower and secure hood (TM 9-2320-280-10). Table 3-2. Belt Tension Requirements NOTE A used belt is one that has been run at least 15 min. or 15 mi. (24 km.). Tension variance of not more than 20 lbs (90 N) between belts of the same set is acceptable. APPLICATION All belts NEW BELT 105 ± 5 lbs (467 ± 22 N) USED BELT 90 ± 5 lbs (400 ± 22 N) 2. Adjust alternator belt set (10) by inserting 1/2-inch drive ratchet and extension in square hole (12) of alternator adjusting bracket (11.1). Turn until belt set (10) appears tight, and tighten capscrew (11) and two capscrews (13.1) securing alternator (13). 3. Using belt tension gauge, check each belt of belt set (10) individually for proper tension. Refer to table 3-2, Belt Tension Requirements. 4. If belt set (10) tension is correct, tighten alternator adjusting bracket (11.1) and capscrew (11) to 40 lb-ft (54 N.m). Tighten two capscrews (13.1) to 60 lb-ft (81 N.m). If tension is not, repeat steps 2 through 4. If tension cannot be properly adjusted, replace belt set (10) (para. 3-81).