Allison Transmission Motorhome Series Operator's Manual page 34

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All segments of this procedure are to be repeated a minimum of 5 times or until
shift quality variation is indistinguishable from shift to shift.
1. From Neutral, with parking brake set and service brakes applied via foot
pedal, select the following sequence: Drive, Neutral, Reverse, Neutral,
Drive, Reverse, Drive, Neutral. Allow each shift to fully complete before
selecting the next shift.
2. Release all brakes and perform this sequence: Wide Open Throttle (WOT)
1–2; once shift is complete, release the throttle to closed and decelerate to
just prior to the Closed Throttle (CT) 2–1 and perform a Step Thru (ST)
2–1 by going to WOT.
3. Continue the process initiated in Step 2 for each Upshift and Downshift
combination available. Example: Wide Open Throttle (WOT) 2–3; once
shift is complete, release the throttle to closed and decelerate to just prior
to the Closed Throttle (CT) 3–2 and perform a Step Thru (ST) 3–2 by
going to WOT. Repeat for the WOT 3–4/ST 4–3, WOT 4–5/ST 5–4,
WOT 5–6/ST 6–5.
4. From a Stop, release vehicle brakes and perform a set of Part Throttle
(PT—50 to 60 percent) Upshifts to the highest attainable range for the
vehicle. Release the throttle to closed and use light vehicle brakes to
decelerate to a stop.
NOTE: If the vehicle is equipped with an output retarder or engine
brake system, these systems should be turned off for this segment.
5. From a Stop, release vehicle brakes and perform Part Throttle (PT—50 to
60 percent) Upshifts to the 3
using moderate to heavy vehicle brakes (NOT panic or wheel lock),
decelerate to a stop.
NOTE: Braking should be aggressive but not to the level that would
cause passenger complaints. If the vehicle is equipped with an output
retarder or engine brake system, these systems should be turned off for
this segment.
rd
range. Release the throttle to closed and,
33

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