F 350 2WD Pickup V8-7.3L DSL (1988)
Differential Case: Technical Service Bulletins
Axle - Rear Axle Case Porosity/Pinion Seal Leaks
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AXLE - REAR - CASE POROSITY OR PINION SEAL LEAK - AXLES BUILT AT VAN DYKE PLANT FROM 09/28/87 TO 10/28/87
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LEAK - REAR AXLE - CASE POROSITY OR PINION SEAL - AXLES BUILT AT VAN DYKE PLANT FROM 09/28/87 TO 10/28/87
Article No. 88-1-16
FORD:
1988 MUSTANG, THUNDERBIRD, CROWN VICTORIA
LINCOLN-MERCURY: 1988 COUGAR, GRAND MARQUIS, MARK VII, LINCOLN TOWN CAR
LIGHT TRUCK:
1988 F SERIES
ISSUE:
Rear axle case porosity or leaking pinion seals may be incorrectly diagnosed resulting in repeat repairs. To help find the source of an axle
leak, a flourescent dye has been added to the axle lubricant. Under normal light, the axle lubricant is "GREEN" in color. Under a black light
the axle lubricant is "YELLOWORANGE" in color.
ACTION:
If service is required, use the axle plant codes on this page and the axle build dated on the service identification tag to determine if the axle
had the dye added. Use a black light to locate the source of the leak.
NOTE:
The service identification tag is bolted in the two o'clock position on the axle housing cover.
OTHER APPLICABLE ARTICLES: None
WARRANTY STATUS: "INFORMATION ONLY"
