Loading

Shopping cart

Call Us

855-919-5257

logo shape2 1 1

Allison MT Series Road Test Checklist

  • Home
  • Allison MT Series Road Test Checklist
shape_2 1 1

Allison MT Series Road Test Checklist

DT#44507

Neutral Start

  • Confirm the selector lever aligns with the mark indicating each range including N (Neutral)
  • Confirm proper function of neutral safety switch – starter should only operate when selector lever is in N

Instruments

  • Contamination caused by not properly flushing the cooler
  • Flush the transmission cooler as part of the installation process

Parking Brake

  • Confirm proper function of the application and release of the parking brake (retarder models do not use a transmission mounted parking brake)
  • Confirm the brake is not dragging to heating up while released
  • Confirm the brake is fully applied before the lever reaches full travel

Power Takeoff (PTO)

  • Refer to the PTO owner’s manual or the vehicle’s manufacturer’s instructions to ensure proper function

No-Load Governed Speed

  • Confirm the no-load governed speed of the engine
  • If necessary, adjust the governor to meet the no-load governed speed (spec available through vehicle manufacturer

Shift Sequence

  • Check and record the full-load governed speed of the engine
  • Subtract 200 from this speed and record that #, this is the desired speed for all automatic upshifts, EXCLUDING:
  • 1-2 upshift in 640, 643, 654CR: should occur at full-load governed speed less 600 rpm
  • 1-2 upshift in 650, 653: manual shift, no adjustment required
  • 2-3 upshift for 650, 653: should occur at full -load governed speed less 600 rpm
  • While driving the vehicle check the wide-open throttle shift points. If adjustment is needed, refer to the respective MT service manual

Retarder

  • Confirm the retarder responds properly
  • Confirm the retarder enable switch turns off the retarder
  • Confirm the retarder only applies at closed throttle
  • Confirm the retarder temperature indicator increases rapidly when retarder is applied
  • Confirm the brake lights come on when retarder is applied

Transmission Fluid

  • Confirm correct fluid level in N (Neutral)
  • Confirm there are no leaks
  • Warm transmission and perform a “hot” fluid level check. Ensure vehicle is on a flat surface and transmission in N.

Other Items

  • Perform a stall check
  • Confirm quality of shift