Condition and Correction

CONDITION:

The transmission may be hard to shift, stuck in any gear or the shift lever may be blocked in any gear.

CAUSE:





One possible cause is a damaged shift shaft lever (Figure 1, 4104). The detent ball (# 107) may move too much in the lever causing the side of the lever to crack or break-out.

CORRECTION:

1. Install a revised shift shaft lever (# 104). This revised lever has a deeper hole to allow the use of a detent plunger (# 107) rather than a ball. The shift shaft lever detent spring (# 106) has not changed but should be replaced if damaged. Beginning March 31, 1993 all units were built with this revised lever and plunger.

2. Install a new shift shaft (# 108) with revised detent notches. All units were built with this revised shaft beginning December 10, 1993.





3. Install a new "self-biasing" shift tower (Figure 2, # 136), a revised detent plunger spring (Figure 2, # 244), a revised 5th/reverse shift fork (Figure 1, it 100) and revised shift shaft bushing (Figure 1, # 103). When this shift tower is installed the bias spring (Figure 1, # 109) and anti-rotation bracket (# 110) must be removed from the transmission. The revised 5th/reverse shift fork will prevent potential reverse block-out with the new shift tower, the revised shift shaft bushing will reduce shift lever side-to-side movement in 5th gear and the revised detent plunger spring will provide improved shift feel.