Fulltext TSBs

Technical Service Bulletins

TSB
97-12-13
  • TRANSMISSION – C6, E4OD, AOD, 4R70W – LOW TRANSMISSION FLUID LEVEL AND/OR SHIFT AND/OR ENGAGEMENT CONCERNS – 4X4 AND AWD VEHICLES ONLY
Publication Date: JUNE 9, 1997

LIGHT TRUCK:
1987-1996 BRONCO
1987-1997 F-150, F-250, F-350
1996-1997 EXPLORER
1997 EXPEDITION, MOUNTAINEER

This TSB article is being republished in its entirety to include 1997 model year vehicles.

ISSUE:

The transmission may have low fluid level and/or may have either a shift concern and/or an engagement concern. This may be caused by transmission fluid leaking from the transmission into the transfer case through the transfer case input seal.

ACTION:

Replace the transfer case input seal. The new seal should reduce the possibility of fluid leaking from the transmission into the transfer case. Refer to the following Service Procedure for details.

SERVICE PROCEDURE

  1. Check the transmission fluid level. If the transmission fluid level is low and there are no visible signs of a leak, check the transfer case fluid level. The level of fluid in the transfer case should be just below the fill plug hole.
  2. If the transfer case fluid level is overfull and the transmission fluid is not burnt, remove the transfer case from the vehicle following the procedure outlined in the appropriate model/year Service Manual.
  3. Remove the transfer case input seal. Clean the seal bore in the transfer case.
  4. Install a new Transfer Case Input Seal (F77Z-7B215-AA)
  5. If the transmission fluid is burnt, repair the transmission as required and then replace the transfer case seal as outlined in Step 3.

PART NUMBERPART NAME
F77Z-7B215-AATransfer Case Input Seal

OTHER APPLICABLE ARTICLES:

NONE

SUPERSEDES:

96-20-18

WARRANTY STATUS:

Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage

OPERATIONDESCRIPTIONTIME
971213AReplace Transfer Case Input Seal – 1987-96 F-150-350, Bronco And 1997 F-250-3501.6 Hrs.
971213BReplace Transfer Case Input Seal – 1996-97 Explorer AWD And 1997 Mountianeer2.7 Hrs.
971213CReplace Transfer Case Input Seal – 1997 F-150, Expedition2.1 Hrs.

DEALER CODING

BASIC PART NO.CONDITION CODE
7B215D8

OASIS CODES:

501000, 502000, 503000, 504000, 508000, 510000