TM 10-4320-344-24Table 3-1.Direct Support Troubleshooting Table.(Continued)MALFUNCTIONTEST OR INSPECTIONCORRECTIVE ACTION7. NO OR LOW SUCTION OR DISCHARGE PRESSURE. (Continued)Step 5.a .b .Step 6.a .b .ACStep 7.a.b.Step 8.a .b .Step 9.a .b .Step 10.a.b.Step 11.a.b .Disconnect governor control box from governor (paragraph 3.8.6).Usingmultimeter set to 200 ohm scale, check continuity from A to A and C toc .(Model 609-A)If reading is more than 1 ohm replace governor control box (paragraph3 . 8 . 6 ) .If reading is 1 ohm or less go to step 6.Remove cover from governor control box.Place jumper between TP1 andTP2 .Turnvdc scale,connector.If readingIf reading3 . 8 . 6 ) .power switch to “ON” position.Using multimeter set to 20measure voltage between pins A and B on the three pin(Model 609-A)is 9.6 vdc go to step 7.is not 9.6 vdc replace governor control box (paragraphinput impedance of meter must be 5,000 ohms per volt or greater.Disconnect 10 pin connector from governor control box.Usingmultimeter, measure AC voltage between pins I and J while crankingmotor.(Model 609-A)If reading is 1.5 volts go to step 11.If reading is not 1.5 volts go to step 8.Turn power switch to “OFF’ position.Using multimeter set to 200 ohmscale, check pins C and J on 10 pin connector that could cause pin J tobe grounded.(Model 609-A)If reading is 1 ohm or less repair or replace wiring as necessary(paragraph 2.17).If reading is more than 1 ohm, go to step 9.Using multimeter set to 200 ohm scale, check continuity between C andD, C and E, C and G, and C and H on 10 pin connector.(Model 609-A)If reading is 1 ohm or less repair or replace wiring as necessary(paragraph 2.17).If reading is more than 1 ohm go to step 10.Using multimeter, check governor control box connector for shortsbetween C and D, C and E, C and G, C and H, and C and J.(Model 609-A)If reading is 1 ohm or less replace governor control box (paragraph3 . 8 . 6 ) .If reading is more than 1 ohm go to step 11.Using multimeter set to 200 ohm scale, check leads I and J from 10 pinconnector to magnetic pick-up unit.(Model 609-A)If reading is 1 ohm or less replace magnetic pick-up unit (paragraph3 . 8 . 5 ).If reading is more than 1 ohm repair or replace wiring as necessary(paragraph 2.17).3-6NOTE
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