TM 5-1940-277-34TROUBLESHOOTING TEST FOR TRANSMISSION(continued)LOCATIONITEMACTIONREMARKSTESTPROCEDURENOTEBoat must be operated 10 - 15 minutes to allow transmission oil to reach normal temperaturebefore starting test. Then stop engines.1.Using 5/16 in hex key wrench, remove 3/8 in pipe plug line pressure tap located above regulator valve.2.Connect hydraulic pressure gage to line pressure tap.NOTETransmission must be in neutral for first test.3.Start engine.4.Follow chart rpm/pressure checks for neutral. If reading is low refer to troubleshooting procedure.Engine RPM1NeutralForward/ReverseMinMaxMinMax70090 psi120 psi90 psi120 psi2000--100 psi125 psi5.While watching pressure gage shift from neutral to forward. If pressure drops and stays low there is leakage in the forward clutch or its circuits.6.Stop engine.7.Using 5/16 in hex key wrench, disconnect gage from line pressure tap and install 3/8 in pipe plug.8.Using 13/64 in hex key wrench, remove 1/8 in reverse clutch pressure plug from adapter tap.9.Connect hydraulic gage to reverse clutch pressure tap.Change 12-23
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