WORKHORSE CUSTOM CHASSIS
Service Manual
2007 W Series
SECTION
7.2
PAGE
528
Automatic Transmission – Allison
2007 W Series Chassis
© 2006 Workhorse Custom Chassis — All Rights Reserved
WSM082106
ON supplying power to the Actuator, holding it in
NEUTRAL. This is the desired condition.
7. Loosen (but do not remove) the 4 Socket Head Cap
Screws that hold the shift shaft adapter in place.
8. Remove 2 of the 4 socket heads crews in Step 7.
9. Place 2 long (1” to 1-1/2” long) #10-32 screws in to the
2 threaded holes of the removed screws.
10. Pull out away from the transmission, putting the
actuator into the “calibration” position.
11. Using the push button shift selector (PBSS), cycle the
actuator (with the Shift Shaft Adapter Bolts Loose) in
the following sequence:
- from N (Neutral) into R (Reverse),
- from R (Reverse), into D (Drive),
- from D (Drive) back into N (Neutral).
12. Remove the 2 long #10-32 Socket Head Cap Screws
used to pull the actuator into the “calibration” position.
13. Replace the 2 - #10-32 x _” long that were removed in
Step 8.
14. Tighten all 4 of the screws that secure the shift shaft
adapter to 20 inch-pounds.
15. Put Loctite on the female threads of the cap nut.
IMPORTANT:
Replace the cap nut and tighten. As this cap nut is
Replace the cap nut and tighten. As this cap nut is
being tightened, the center portion of the actuator will
being tightened, the center portion of the actuator will
move inward (from the calibration position into the oper-
move inward (from the calibration position into the oper-
ation position). This is normal. Back the cap nut off
ation position). This is normal. Back the cap nut off
1/16 to 1/8 of a turn. Holding the cap nut with a wrench,
1/16 to 1/8 of a turn. Holding the cap nut with a wrench,
tighten the socket head cap screw that goes through
tighten the socket head cap screw that goes through
the center of the cap nut to 20 inch-pounds.
the center of the cap nut to 20 inch-pounds.
16. Replace the cover plate with the 3 cover plate screws.
Torque to 5 lb ft. At this point the actuator assembly is
calibrated to the transmission.
Calibration Using Shift Shaft Adapter B
17. Turn the ignition ON, and select NEUTRAL
18. Turn the Ignition OFF. This should turn off engine
but not the Shift Selector. The shift selector will stay
ON supplying power to the Actuator, holding it in
NEUTRAL. This is the desired condition.
19. Remove the 4 Socket Head Cap Screws that hold the
Shift Shaft Adapter in place, fi gure 7-15.
20. Place 2 long (1-3/4” to 2-1/2”) #10-32 screws in the 2
threaded holes (not the slot) of the Shift Shaft Adapter.
21. The following steps are to confi rm that the
transmission is truly in NEUTRAL.
IMPORTANT:
Performing these steps incorrectly will result in calibrat-
Performing these steps incorrectly will result in calibrat-
ing the transmission in a position other than NEUTRAL.
ing the transmission in a position other than NEUTRAL.
A.
Using a long substantial screwdriver wedged
