Loading

info@transaxle.com
2501 RT 73 South, Cinnaminson, NJ 08077

Allison HT Series Road Test Checklist

shape_2 1 1

Allison HT Series Road Test Checklist

DT#26942

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

Confirm proper function of all instruments associated with the transmission, including the speedometer & transmission oil temperature gauge

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 100 from this speed and record that #, this is the desired speed for all automatic upshifts, EXCLUDING:
1-2 upshift in 750: should occur at 100 rpm below lockup engagement speed

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