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Allison Transmission Parts from TransDiesel Transmission can be shipped the same day in most cases.
  Helpful Troubleshooting Tips For Allison Transmissions Models AT/MT(B)/HT/V The references below outline the possible causes of transmission conditions and their remedies. Several possible causes and suggested remedies are indicated. A - ABNORMAL SHIFTS • Shifts Occur at Too High Speed • Shifts Occur at Too Low Speed - Full Throttle • Rough Shifts • No Specific Shift; i.e.., 1-2, 2-3, 3-4, 4-5 (Up or Down) • Excessive Engine Flare B - ABNORMAL ACTIVITIES OR RESPONSES • Excessive Creep in First and Reverse Ranges • No Response to Movement of Shift Selector Lever • Vehicle Moves Forward in Neutral • Vehicle Moves Backward in Neutral • Reverse Warning Buzzer and/ or Vehicle Backup Lights Come on During Forward Operation C - ABNORMAL STALL CHECK SPEEDS • High Stall Speeds • Low Stall Speeds • Stall Speed 50% of Normal D - LEAKING OIL • Oil Leaking Into Converter Housing • Transmission Fluid Leak at Output Shaft E - LOW PRESSURES • Low Main Pressure in All Ranges • Low Main Pressure in First Range, Normal Pressure in Other Forward Ranges • Low Lubrication Pressure F - CLUTCH(ES) SLIPPING • Slipping and Chatter in Only One Range • Slipping in All Forward Ranges G - EXCESSIVE ENGINE FLARE • Excessive Engine Flare H - OVERHEATING IN ALL RANGES • Overheating in All Ranges I - TRANSMISSION THROWS FLUID OUT OF FILL TUBE AND/OR BREATHER • Transmission Throws Fluid Out of Fill Tube and/or Breather J - DIRTY TRANSMISSION FLUID • Dirty Transmission Fluid K - NOISE OCCURRING INTERMITTENTLY (BUZZING) • Noise Occurring Intermittently (Buzzing) L - VEHICLE WILL NOT PUSH START • Vehicle Will Not Push Start M - CLUTCH(ES) SLIPPING - AT 540/542/1542/543/545/1545 • Slipping in Fourth and Reverse Ranges Only • Slipping in First and Reverse; OK in Other Forward Ranges N - CLUTCH(ES) SLIPPING - MT(B) 640/643/650/653 • Slipping in First and Reverse Ranges Only Slipping in second or Third (MT 640, 643) or Third or Fourth (MT 650, 653) Only • Slipping in Fourth and Reverse Ranges Only • Slipping in Low Range Only (MT 650, 653) • Slipping in All Forward Ranges O - CLUTCH(ES) SLIPPING - MT(B) 644/647, 654CR • Slipping in First and Reverse Ranges Only (MT(B) 644/647) • Slipping in First and Reverse Ranges (MT 654CR) • Slipping in Second or Third Ranges Only (MT(B) 644/647) • Slipping in Third or Fourth Ranges Only (MT 654CR) • Slipping in Fourth and Reverse Ranges Only (MT(B) 644/647) • Slipping in Fifth and Reverse Ranges Only (MT(B) 654 CR) • Slipping in First Range Only (MT(B) 644/647) • Slipping in Second Range Only (MT(B) 654CR) • Slipping in All Forward Ranges P - CLUTCH(ES) SLIPPING - HT 700 • Slipping in All Forward Ranges • Slipping in Reverse Range • Slipping in High and Reverse Ranges • Slipping in Second or Third or Fourth Range (5-Speed) • Slipping in Second or Third or Fourth Range (5-Speed) Q - CLUTCH(ES) SLIPPING - V 730 • Slipping in First and Reverse Ranges Only • Slipping in Third Range Only • Slipping in Second Range Only • Slipping in Third and Reverse Ranges Only R - RETARDER NOT FUNCTIONING PROPERLY (Models With Output Retarder) • Excessive Retarder Response Time • No Retarder Operation at Low Speed • No Retarder Operation at High Speed • Low Main and/or Retarder Pressure • No Retarder Output • Harsh Retarder Apply • Retarder Will Not Release |
  Find the compatible Allison Transmission(s) for your Vehicle Size & Unit of Measure: On Highway (English Units) On Highway (Metric Units) Off Highway (English Units) Off Highway (Metric Units)
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TransDiesel
