Covering the politics, Business and technology of defense - Subscribe Today

TM-9-2320-362-14&P HMMWV Technical Manual Electrical Environmental System (EES) Download

Page 42 of 353

TM 9-2320-362-14&P Table 3-2. Unit Troubleshooting MALFUNCTION TEST OR INSPECTION CORRECTIVE ACTION 2. TACHOMETER READING IS INCORRECT Step 1. Connect STE/ICE-R to engine (TM 9-2320-280-20). Start engine (TM 9-2320-280-10) and let engine come to normal idle speed of 650 RPM (± 25 RPM). Step 2. Check engine idle setting. If engine idle setting is incorrect, adjust engine idle (TM 9-2320-280-20). If engine idle setting is correct, go to step 3. Step 3. Compare STE/ICE-R RPM rate to tachometer RPM rate. If RPM rates agree, procedure is completed. If RPM rates do not agree, go to step 4. Step 4. Remove tach/hourmeter box cover from tach/hourmeter box. Adjust tachometer adjustment screw (1) on back of tachometer (2) until RPMs on STE/ICE-R and tachometer (2) agree. If tachometer adjusts to correct RPMs, procedure is completed. Replace tach/hourmeter box cover on tach/hourmeter box. If tachometer will not adjust to desired RPMs, replace tachometer (para 3-18). END OF TESTING 3-12