R 3500 P/U 2WD V8-305 5.0L (1987)
Seals and Gaskets: Technical Service Bulletins
A/T - New Latex-Coated Cellulose Oil Pan Gasket
Number:
87-137
Section:
7A
Date:
May, 1987
SUBJECT:
NEW LATEX-COATED CELLULOSE OIL PAN GASKET
MODELS:
ALL LIGHT DUTY TRUCK MODELS WITH THM 400/475 AUTOMATIC TRANSMISSIONS
Figure No. 1
BULLETIN COVERS:
All 1987 THM 400/475 transmissions have a new latex-coated cellulose (hard, fiber material) pan gasket. The new gasket improves sealing because it
will not "crush" like a cork (soft material) gasket.
DATE OF CHANGE: (Figure No. 1)
July 22, 1986 (Julian Date 203) for all 1987 THM 400/475 transmission models.
SERVICE ACTION:
The previous latex-coated cork (soft material) gasket, in some service overhaul packages, should NOT be used. The new gasket is available separately
and can be used on any model year THM 400/475 transmission.
SERVICE PARTS INFORMATION:
Part Number
Description
8655625
Gasket, Transmission Oil Pan
(Cellulose)
SERVICE MANUAL REFERENCE:
Refer to the Oil Pan and Filter Assembly section of the 1987 THM 400 Unit Repair Service Manual for proper installation procedures.
SERVICE NOTES:
When installing the oil pan you must use a torque wrench to tighten the conical washer and screw assemblies to 8-14 N-m (6-10 ft.lb).
