TM-9-2320-366-20-2 MTV Unit Maintenance Manual M1083 Series - Volume 2 Download
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f11. TRANSMISSION UNUSUALLY NOISY WHEN OPERATING (CONT) WARNING Read WARNING on following page. TEST OPTIONS Main Pressure Test or STE/ICE-R Test #50 REASON FOR QUESTION Low main oil pressure causes main regulator valve to oscillate. KNOWN INFO Transmission oil level OK. Oil not contaminated. Operating temperature normal. No codes logged in ECU. PTO engagement OK. Scavenge pump engagement OK. POSSIBLE PROBLEMS Faulty oil pump. Faulty flexplate bolts. Faulty flexplate. Faulty propeller shafts and / or universal joints. Faulty transmission transfer case, TM 9-2320-366-20-2 2-1648 Change 1 Is 218-276 psi (1,503-1,903 kPa) present at main oil pressure tap? YES Notify DS Maintenance. NO 4.