TM-9-2320-387-24 HMMWV Direct Support & General Support Maintenance Manual Volume 1 Download
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3-81. SERPENTINE DRIVEBELT MAINTENANCE 1. Position 3/8-in. breaker bar or, as appropriate, a 1/2-in. ratchet wrench on belt tensioner (7) and move tensioner (7) clockwise to loosen drivebelt (9). 2. Remove drivebelt (9) from power steering pump pulley (3), alternator pulley (2), water pump pulley (4), crankshaft pulley (5), air conditioning compressor or idler pulley (8), two upper idler pulleys (1), and tensioner pulley (6). Release belt tensioner (7). CAUTION Serpentine drivebelt failure (abnormal wear or belt dislodgement) can be caused by misalignment of pulleys, improper installation or foreign objects introduced into belt path. NOTE Check pulley and pulley grooves for damage and debris prior to installing serpentine drivebelt. b. Installation TM 9-2320-387-24-1 3-142 Change 1 This task covers: a. Removal c. Alignment b. Installation INITIAL SETUP: Tools General mechanic’s tool kit: automotive (Appendix B, Item 1) Maintenance and repair shop equipment: automotive (Appendix B, Item 2) Pulley alignment tool (Apendix D, Fig. D-107) Personnel Required One mechanic One assistant Manual References TM 9-2320-387-10 Equipment Condition Hood raised and secured (TM 9-2320-387-10). Maintenance Level Unit 1. Position 3/8-in. breaker bar, or as appropriate, a 1/2-in. ratchet wrench on belt tensioner (7) and move tensioner (7) clockwise to allow installation of drivebelt (9). 2. Feed drivebelt (9) into grooves on crankshaft pulley (5), air conditioning compressor or idler pulley (8), two upper idler pulleys (1), alternator pulley (2), power steering pump pulley (3), water pump pulley (4), and tensioner pulley (6). Release belt tensioner (7). a. Removal NOTE 200-AMP dual voltage regulator shown.