Installing Shift Selector Lever - Allison Transmission AT 500 Series Manual

• The output flange is retained by a
Replace the bolt and washer each time they are removed. Tighten the bolt to
102–121 lb ft (138–164 N·m).
NOTE: Bolt P/N 29510838 with improved torque retention should be
used. This bolt has five grade identification slots in the bolt head rather
than the six slots of P/N 23014159. Reference SIL 1-TR-94. The
torque value is the same for both bolts.
3–4. INSTALLING SHIFT SELECTOR LEVER
WARNING: Second-neutral models are equipped with an internal
selector lever having two N (Neutral) positions. This style lever may
only be used with second-neutral models. If you mix one- and
second-neutral parts, the unit will not operate properly (e.g. the
vehicle may travel in R (Reverse) when D (Drive) is selected. Be sure
to install the appropriate internal selector lever. Refer to Figure 5–4
and to SIL 20-TR-93.
CAUTION: Manual selector shafts that are center drilled at their
outer ends require an M10 x 1.5-6G nut (metric thread). Shafts that
are undrilled require a
wrong nut will damage both the shaft and nut. Torque for either nut is
15–20 lb ft (20–27 N·m). Excessive torque applied to the nut without
holding the lever can damage the internal lever. Do not use an impact
wrench.
• Install the selector lever onto the selector shaft. The flats in the lever slot
interfere slightly with the tapered flats on the selector shaft before the lever
seats against the shaft shoulder. If such an interference fit is not present,
replace the selector lever.
CAUTION: Overtightening the lever retaining nut can damage the
shaft thread.
• Install the lever retaining nut, finger tight, against the lever.
• Shift the selector shaft to a position away from either end position. Two detent
"clicks" from either end position is recommended.
• Hold the lever and tighten the nut to 15–20 lb ft (20–27 N·m) (Figure 3–2).
The lever must be seated fully against the shaft shoulder.
1 1
⁄ -20 x 1 ⁄ inch bolt and a 1
2 2
3 ⁄ -16 nut (standard inch series). Use of the
8
19
1
⁄ inch washer.
16