M/T - T19 Shift Lever Shake/Looseness

85ford01

Article No. 85-1-22
TRANSMISSION - T-19 - SHIFT LEVER SHAKE/LOOSENESS IN 3RD/4TH
LIGHT TRUCKS F250 HD/F350

Excessive shift lever fore-aft shake or looseness may result from looseness in the shift lever isolator or between the lever and shift fork gate. The condition may also be caused by a warped fork "chattering" in the synchronizer groove.

RECOMMENDED DIAGNOSIS AND SERVICE PROCEDURE:

A) Lever Inspection
1. Remove the cover for access to the shift lever assembly cap.
2. Remove and examine the shift lever.
a. Check the shift lever itself for excessive looseness. (The shift lever assembly should be a solid unit allowing NO movement.)
b. Check for an improperly machined pivot ball or lower pivot which might aid shift lever looseness.
c. Check the shift lever positioning pin (trunnion) installation.
d. Re-assemble and torque the shift lever cap to cap to 8-15 ft.-lbs. If these actions do not resolve the looseness, continue with Step B, which will require the removal of the transmission top cover. This can be done without removing the transmission assembly from the vehicle by removing the transmission access floor plate.

B) Transmission Top Cover Inspection
1. Check for excessive (greater than .010") fore/ aft movement in the 3/4 shift rail while the shift lever is in the 3rd or 4th gear position.

Figure 23:

2. Verify the shift lever gate fore/aft dimension on the 3/4 shift fork (.564/.560 in.) (Figure 23).
3. Verify that anti-rattleball (Figure 23) is present and is spring loaded.
If no discrepancies are found in steps A) and B), replace the 3/4 shift fork (Service Part #E3TZ-7279- C). If this fork is improperly formed, it will chatter in the synchronizer groove. Re-drive vehicle to verify fix.
PART NUMBER PART NAME CLASS

E3TZ-7279-C Ford - 3rd/4th C

OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: Reimbursable within the provisions of the Warranty and Policy Manual.
OPERATION: SP7279A84
TIME: 1.7 Hrs. DLR. CODING: Basic Part No. 7279 Code: 02