Allison Transmission 1000 & 2000 Product Families 4th Controls MT4007EN Troubleshooting Manual

• Driveline angles—runout, or balance which does not conform to the manufacturer’s recommendations • Driveline yoke slip joints: – freedom of movement – damaged or worn­out – correctly lubricated – correctly indexed • Driveline midship or hanger bearings—damaged or misaligned • Universal joints: – freedom of movement – damaged or worn­out – correctly lubricated – correctly indexed • Vehicle differential backlash—manufacturer’s specification • Universal joint coupling—alignment and differential damage • Cross­frame members and rear support members—condition and location • PTO­driven equipment shafts and couplings—damaged or misaligned • Auxiliary transmission: – shaft alignment – alignment of yoke or flange – backlash – fluid leaks 5–4. COOLER, FILTER, AND LINES a. Inspection. Perform the following and correct any faulty conditions: • Transmission fluid cooler and related coolant lines: – Check for contamination—clean and flush as necessary – Inspect for deterioration – Inspect for faulty connectors or kinks – Clean and flush transmission fluid cooler, both coolant and oil sides using J 46550­A Transmission Cooler Kwik Cart. Pressure check both sides using a 276 kPa (40 psi) air supply.

• Hydraulic lines: 51