b. Replacement. Replace the shift selector, linkage or cable whenever it does not shift the transmission to the range indicated at the shift selector or when it cannot be adjusted to achieve “free pin” fit as described in the procedure above. Use the following procedure for replacing the shift selector, linkage or cable. 1. Use process of elimination to find the problem source. 2. Disconnect the shift linkage/cable at the transmission shift lever end. Move the transmission shift lever through each detent position. If function is normal, the problem must be in the linkage/cable or in the shift selector itself. If detents cannot be felt or if excessive force is needed to move the lever, then the problem may be inside the transmission. Proceed to appropriate repair procedure. 3. Disconnect the linkage/cable from the shift selector at the operator’s console. If shift selector operation is normal, replace the linkage/cable. If operation is not normal, replace the shift selector. 4. Reconnect all components, properly adjust, and be sure that normal function has been restored.
3–2. NEUTRAL START/BACKUP (NSBU) SWITCH a. Adjustment. Use the following procedure when diagnostic trouble codes have been logged and the corrective action is to adjust the NSBU switch or transmission ranges are inhibited. 1. Disconnect the shift linkage/cable from the shift lever at the transmission. 2. With a wrench keeping the shift lever from rotating (see Figure 3–4), remove the nut from the end of the selector shaft. Carefully remove the selector lever from the selector shaft. 3. Remove the dust shield from a single connector NSBU switch. 4. Loosen the two bolts which attach the NSBU switch to the main housing so that the NSBU switch and bracket may be rotated with some effort. 5. Make sure the selector shaft is in the N (Neutral) position (using a wrench on the selector shaft flats, rotate the shaft to its furthest clockwise position and then rotate counter-clockwise two detents — see Figure 3–2). 6. For a one-connector NSBU switch, position special tool J 41364-A (see Figure 3–3 over the selector shaft so two tabs on the tool engage two slots in the NSBU switch just outside the selector shaft. Rotate the NSBU switch and bracket until the single tab at the other end of the tool engages the single slot at the top-front of the NSBU switch. 7. For a two-connector NSBU switch, position special tool J 41364-A (see Figure 3–3) over the selector shaft so two tabs on the tool engage two slots in the NSBU switch just outside the selector shaft. Rotate the NSBU switch and bracket until the single tab at the end of the tool engages the slot at the toprear of the NSBU switch.
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