Automatic Transmission Test Linkage Check

Automatic Transmission Test Linkage Check

Accelerator Linkage and Operation

The linkage must be tree and must return to idle when released.

Kickdown Linkage (Except AOD)

Check for wide-open carburetor and linkage travel at full throttle. The carburetor full-throttle stop must be contacted by the throttle linkage and there must be a slight amount of movement left in the downshift linkage. Be sure the downshift linkage return spring is connected and the downshift lever returns to a closed position.

Throttle Valve Control Cable System Check-AOD 4.9L (300 CID) 1-6 and 5.OL EFI Engine Application
Check for free cable and lever travel and return between idle and wide open throttle. Cable must not be loose where it fastens to the throttle body lever.

CAUTION: Do not drive vehicle if cable is broken or disconnected at carburetor.

Damage to friction elements in the transmission may result due to excessive slipping since TV pressure will remain near zero. If it is necessary to drive truck before repairing or resetting cable, disconnect cable at the transmission lever. TV pressure will now be near maximum allowing light throttle operation. However, shifts will be delayed and harsh.

Manual Linkage

This is a CRITICAL adjustment. Be sure the "D" (C5) or OD detent in the transmission corresponds exactly with the stop in the steering column or console. Hydraulic leakage at the manual valve can cause delay in engagements arid/or slipping while operating if the linkage is not correctly adjusted.