TM 1-1520-240-109-1-21If indicator doesnotreset and engine power isrequiredthen:Landassoonaspossible.If indicator doesnotreset and engine power isrequiredthen:1. EMERG ENG SHUTDOWN.2. Land as soon as practicable.9-1-34. Transmission Low Oil Pressure or HighTemperature Indications.Developing trouble in the transmissions can be identifiedby high oil temperature or low oil pressure, as indicatedby transmission temperature and pressure indicatorsand cautions. If an abnormal temperature or pressureindication develops, closely monitor the caution capsu-les. The XMSN OIL PRESS (main or aux) and XMSN OILHOT caution capsules operate independently of thepressure and temperature indicating system and comeon when a low pressure or high temperature conditionoccurs. Additional information may be obtained by theflight engineer checking the MAINTENANCE PANEL.The transmission temperature and pressure selectorswitches shall be used to assist in determining the defec-tive transmission.9-1-35. XMSN OIL PRESS Caution. If the XMSN OIL PRESS caution capsule comes on, thefollowing actions should be taken:AFTor AFT SHAFT(confirm AFT SHAFT with flightengineer):Landassoonaspossible.FWD or COMB (MIX):1. Altitude — Descend to minimum safe altitude.2. Airspeed — 100 KIAS or Vne, whichever is slower.3. Land as soon as practicable.LEFTor RIGHTEngine power is required:Landassoonaspossible.Engine power isnot required: 1. EMERG ENG SHUTDOWN.2. Land as soon as practicable.9-1-36. XMSN OIL PRESS and XMSN AUX OILPRESS or XMSN CHIP DET Caution. Landassoonaspossible.9-1-37. XMSN AUX OIL PRESS Caution.If the XMSN AUX OIL HOT caution capsule comes on,the following actions should be taken:MAIN XMSN, (FWD, COMB (MIX) or AFT)Main transmission oil pressure and temperature are ab-normal:Landassoonaspossible.Main transmission oil pressure and temperature are nor-mal:Land as soon as practicable.9-1-38. XMSN OIL HOT Caution. If the XMSN OIL HOT caution capsule comes on, thefollowing actions should be taken:FWD or COMB (MIX):Landassoonaspossible.AFTtransmission isindicated:1. Landassoonaspossible.2. Electricalload —Reduce as much aspossible.LEFTor RIGHTEngine poweris required:Landassoonaspossible.Engine power isnot required: 1. EMERENGSHUTDOWN.2. Land as soon as practicable9-1-39.712Torque Measuring System Malfunc-tions.Malfunctions in the torque measuring system can appearon the torquemeter as fluctuations, zero torque indica-tion, sluggish movement, indications that are out ofphase, or a stationary indication. Fluctuations in torqueat steady state are indicative of an electrical malfunctionwithin the system. If thisoccurs, proceed as follows:1. AC and DC Torque circuit breakers — In.2. N1s — Monitor when power changes aremade insuring power outputs are matched. 3. Fuel flow indicator — Monitor for matchedfuel flows.
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