Table 3-1. Direct Support Troubleshooting Table.MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION1.ENGINE HILL NOT START.Remove Idler Pulley and inspect fuel injection timing gear for alignment andslippage.Set fuel injection pump timing (paragraph 3.8.10/3.8.11).2.ENGINE STARTS AND RUNS ERRATICALLY AFTER WARMUP.Step 1.Check governor assembly adjustment.a.Adjust governor assembly (paragraph 3.8.6/3.8.8).b.Replace governor assembly (paragraph 3.8.6/3.8.7/3.8.8).Step 2.Remove Idler Pulley and inspect fuel injection timing gear foralignment and slippage.Set fuel injection pump timing (paragraph 3.8.10/3.8.11).3. ENGINE TACHOMETER GAUGE SHOWS HIGH RPM. (Model 609-A)Step 1.a .b .Step 2.a.b.Step 3.a.b.Check to see if governor linkage is sticking or loose.If linkage is sticking or loose adjust or replace linkage (paragraph3 . 8 . 6 ) .If linkage is in full load position go to step 2.Remove governor control box from governor (paragraph 3.8.6). Usingmultimeter, set to 200-ohm scale, check for shorts between pins A and Bon governor 5 pin connector.If reading is 1 ohm or less replace governor (paragraph 3.8.6).If reading is greater than 1 ohm go to step 3.Remove governor control box from governor (paragraph 3.8.6).Usingmultimeter set to 200-ohm scale, check for open circuits between pins Aand C on governor 5 pin connector.If reading is 1 ohm or less adjust governor assembly (paragraph 3.8.6).If reading is greater than 1 ohm replace governor assembly (paragraph3 . 9 . 4 ) .4.IMPROPER GOVERNOR OPERATION. (Model 609-A)Step 1.Using multimeter, set to 20 vdc scale, measure voltage between A and Con 10 pin connector while engine is running.a. If reading is not 12 vdc, go to MALFUNCTION 7.b .If reading is 12 vdc, go to step 2.Step 2.Using multimeter, set to 20 vdc scale, measure voltage between A and Bon 3-pin connector.a. If reading is not 9.6 vdc, go to MALFUNCTION 7.b .If reading is 9.6 vdc, go to step 3.3-3
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