Fulltext TSBs

Technical Service Bulletins

TSB
98-23-14
  • FEAD – BELT TENSIONER WEAR – VEHICLES WITH 7.3L DI TURBO ENGINE
Publication Date: NOVEMBER 10, 1998

LIGHT TRUCK:
1995-1997 F SUPER DUTY
1995-1998 ECONOLINE, F-250 HD, F-350

ISSUE:

Premature wear of the belt tensioner may occur on some vehicles. This may be due to engine torsional input to the Front Engine Accessory Drive (FEAD) system causing excessive tensioner arm movement.

ACTION:

Replace single arm tensioner with new dual arm tensioner. Refer to the following Service Procedure for details.

SERVICE PROCEDURE

Refer to the appropriate Service/Workshop Manual for procedure details for the following:

  1. Remove drive belt, alternator, belt tensioner, grooved idler pulley, flat idler pulley, and alternator mounting bracket.
  2. Modify the alternator mounting bracket as follows:
    1. Cut off the support boss for the grooved idler pulley. The boss must be cut off flush with the side of the bracket support ribs (Figure 1).


      Figure 1 – Article 98-23-14

    2. Cut the boss support rib down 12mm (0.5″) from the boss to support rib of the bracket (Figure 2).


      Figure 2 – Article 98-23-14

    3. Modified bracket should appear as in Figure 3.


      Figure 3 – Article 98-23-14

  3. Mount the dual arm tensioner onto the alternator mounting bracket and verify that it lies flat on the mounting surface of the bracket.
  4. Reinstall bracket/tensioner assembly, flat idler pulley, and alternator. Install new drive belt. The grooved idler is no longer required, discard this part. Remove old belt routing decal and install new belt routing decal.

PART NUMBERPART NAME
F8UZ-6B209-CADual Arm Tensioner
F8TZ-8620-FBDrive Belt – 8 PVKx3132mm (1994-1/2 F-Series With DI Turbo And MT, All 1995-98 With DI Turbo 7.3L Engine)
F8UZ-8620-BA8-Rib – PVKx3103mm Effective Length (Used With All 1997-98 Econoline With 7.3L DI Turbo Engine)
F8UZ-8B656-ABDecal – Belt Routing (Used With All Models)

OTHER APPLICABLE ARTICLES:

NONE

WARRANTY STATUS:

Eligible Under The Provisions Of Bumper To Bumper Warranty Coverage And Powerstroke Diesel Engine Warranty Coverage

OPERATIONDESCRIPTIONTIME
982314AReplace Tensioner (F-Series)1.0 Hr.
982314BReplace Tensioner (Econoline)1.1 Hr.

DEALER CODING

BASIC PART NO.CONDITION CODE
6b20930

OASIS CODES:

497000, 499000