TM-9-2350-311-20-1 Maintenance Manual for Volume 1 M109 Hull Download
Page 1230 of 1275
TM 9-2350-311 -20-1 WARNING On some vehicles that have MASTER switch in negative battery cable, sparking may occur if VTM case touches vehicle while MASTER switch is off and VTM is on. Sparking in presence of fuel or vapors presents hazard. Avoid hazard by doing all testing with vehicle MASTER switch on. Excessive pressure can damage transducer. Pressure being measured should not exceed 1000 psig (68.9 kg/sq cm). Stop vehicle engine. Remove oil pressure sending unit (para 8-8). Install blue-striped pressure transducer (TK item 17) in place of sending unit on engine. Connect P1 of transducer cable W4 to J3 on VIM. Connect P2 of transducer cable to connector on pressure transducer. During offset test, system being measured must be repressurized. Refer to TM 9-4910-571-12&P for offset fault isolation. Go to Figure 3, sheet 28. Figure 3, Sheet 27 of 36 I-53 CAUTION NOTE