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Service bulletin 985A27

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id601034
Published by NHTSA2000-12-13
Manufacturer's number985A27
Manufacturer's date1998-03-18
NHTSA componentPOWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT:SEAL

NHTSA's summary

LUBRICANT LEAKING FROM REAR AXLE SEAL CONTAMINATING BRAKE SHOES. *YC

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Transmission and driveline, Axle

Vehicles listed
FORD F-250 SD1995, 1996, 1997 (the catalog's model; the bulletin names a series or trim of it)
FORD F-3501995, 1996, 1997

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
01932001-07-19. Service bulletin. A CONDITION MAY EXIST WHERE A DRIVELINE VIBRATION AND / OR A TRANSMISSION FLUID LEAK FROM THE EXTENSION HOUSING SEAL AREA MAY OCCUR ON SOME VEHICLES. THIS MAY BE CAUSED BY THE EXTENSION HOUSING BUSHING OR SEAL WALKING / SPINNING OUT DUE TO EXCESS DRIVESHAFT FLEXING DURING EXTENDED HIGH SPEED OPERATION. *TT
46282001-01-02. Service bulletin. SOME VEHICLES MAY EXHIBIT REAR AXLE NOISE. *TT
9830741999-09-21. Service bulletin. CONCERNS WITH AXLE WIND-UP AND / OR CLUNKING, POPPING, RATCHETING TYPE NOISES WHEN MAKING CORNERING MANEUVERS. *TT
129051999-09-08. Service bulletin. SOME VEHICLES MAY EXPERIENCE AXLE WIND UP AND / OR CLUNKING, POPPING, RATCHETING TYPE NOISES WHEN MAKING CORNERING MANEUVERS ON VEHICLES EQUIPPED WITH A FOUR WHEEL DRIVE HI OR LOW RANGE MODE. *TT
9626201997-06-17. Service bulletin. NOISE - RATCHETING - FRONT AXLE - 4X4 - SELF ENGAGEMENT OF AUTOMATIC HUB LOCKS. *TW
BC51979610011997-04-24. Service bulletin. SOME VEHICLES EQUIPPED W/ AN AX4S TRANSAXLE MAY HAVE BEEN SHIPPED W/ A LOW TRANSAXLE FLUID LEVEL. *TT
BC01319601021996-04-25. Service bulletin. 4X4 FRONT AXLES MUST USE HYPOID 4X4 GEAR OIL P/N F1TZ-19580-A & HIGH TEMP 4X4 FRONT AXLE & WHEEL BEARING GREASE WHEN SERVICING. IT IS NOT RECOMMENDED TO USE HEAVIER WEIGHT LUBES IN THESE FRONT AXLES.