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• SHIFT SEQUENCE
❑ Drive the vehicle and check the wide-open throttle upshift points. If
adjustment of the shift points is required, refer to the applicable AT
Service Manual. The shifts should occur at the following speeds:
— 1–2 upshift occurs within 400 rpm of full-load governed speed
— 2–3 upshift occurs within 300 rpm of full-load governed speed
— 3–4 upshift occurs within 200 rpm of full-load governed speed
• RETARDER
❑ Check that the retarder responds correctly to 50 percent or 100 percent
apply.
❑ Check that the retarder enable switch turns off the retarder.
❑ Check that retarder only applies at closed throttle.
❑ Check that low speed cutoff switch turns off the retarder in first range.
❑ Check that the retarder temperature indicator increases rapidly when the
retarder is applied.
❑ Check that the brake lights come on when the retarder is applied.
• TRANSMISSION FLUID
❑ Fluid level meets specification (transmission in N (Neutral) or
P (Park)).
❑ Check for leaks.
❑ Warm up transmission and perform a fluid level “hot” check (transmission
in N (Neutral) or P (Park) and vehicle on a level surface).
• OTHER CHECKS
❑ Stall check
❑ Shift quality
❑ Comments:__________________________________________________
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