TM-9-2320-362-14&P HMMWV Technical Manual Electrical Environmental System (EES) Download
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TM 9-2320-362-14&P 3-17. TACH/HOURMETER BOX REPLACEMENT This task covers: a. Removal b. Installation INITIAL SETUP: Tools Manual Reference General mechanic’s tool kit: TM 9-2320-280-10 automotive (Item 1, Section III, TM 9-2320-280-20 Appendix B) Equipment Condition Materials/Parts Battery ground cable disconnected Two locknuts P/N MS21044C3 (TM 9-2320-280-20) 1. Disconnect cable assembly W64 (9) from connector 12J1 (8). 2. Unlatch two flexible latches (14) from keepers (12) on engine access cover holddown brackets (11). 3. Unlatch two engine access cover holddown latches (13) from engine access cover holddown strikes (16). 4. Turn two ring studs (10) and pull engine access cover (5) out until end of safety lanyard (1) is reached. 5. Disconnect cable assembly W66 (15) from connector on back of tach/ hourmeter box (6). 6. Unhook safety lanyard (1) from safety tab (17). 7. Remove locknuts (2), washer (3), washer (4), safety lanyard (l), tach/hourmeter box (6) and tach/hourmeter seal (7) from engine access cover (5). Discard locknuts (2). b. Installation 1. Install tach/hourmeter seal (7), tach/hourmeter lanyard (1) to engine access cover (5). Secure washer (3) and locknuts (2). 2. Hook safety lanyard (1) onto safety tab (17). 3. Connect cable assembly W66 (15) to connector on box (6). 4. Install engine access cover (5) and secure with 5. Secure two engine access cover holddown latches cover holddown strikes (16). box (6), and safety with washer (4), back of tach/hourmeter two ring studs (10). (13) to engine access 6. Secure two flexible latches (14) to keepers (12) on engine access cover holddown brackets (11). 7. Connect cable assembly W64 (9) to connector 12J1 (8). 3-32