A/T - AOD Case Thread Update

89ford06

TRANSMISSION - AOD - CASE BOLT HOLE SIZE CHANGE


Article No. 89-9-12


FORD: 1986-88 CROWN VICTORIA 1986 LTD 1986-88 MUSTANG, THUNDERBIRD

LINCOLN-MERCURY: 1986 CAPRI 1986-87 CONTINENTAL 1986-88 COUGAR, GRAND MARQUIS, MARK VII 1986 MARQUIS 1986-88 TOWN CAR

LIGHT TRUCK: 1986-88 BRONCO, ECONOLINE, F-150, F-250, F-350


ISSUE: The 1989 model year "AOD" transmission case threads are different from prior model year cases. Prior model year transmission cases use a 5/16"-18 thread. 1989 model year transmission cases use a M10-1.5 thread. The larger M10-1.5 bolts will not pass through the prior model year converter plate, transmission brace or engine cover plate.

FIGURE 1:

ACTION: If a transmission case replacement is required on a past model vehicle, the bolt holes for the car's transmission brace and converter cover plate will need to be enlarged with a 1/2" drill. On light trucks, enlarge the converter cover plate and engine cover plate with a 1/2" drill. Refer to Figure 1 for the bolt hole locations.

OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: INFORMATION ONLY
OASIS CODES: 5800