Celebrity V6-173 2.8L (1989)
Band: All Technical Service Bulletins
A/T - New Style 1-2 Band Assembly
Number:
90-197-7A
Section:
7A
Date:
March 1990
Corp. Bulletin No.: 077110
Subject:
NEW 1-2 BAND ASSEMBLY - DOES NOT REQUIRE 1-2 BAND STOP
Model and Year:
1984-90 A CAR AND 1990 W CAR WITH 4T60 (440-T4) OR F7 AUTOMATIC TRANSMISSION
Figure 1
This bulletin covers a new style 1-2 band assembly that will be used in production of all HYDRA-MATIC 4T60 (THM 440-T4) and THM F-7
transaxles. The area on the new 1-2 band assembly where the 1-2 band apply pin engages is almost twice as wide as the previous style. This increased
area makes for a larger "target" for the 1-2 band apply pin and eliminates the need for the 1-2 band stop.
The 1-2 band stop was used to keep the 1-2 band assembly from shifting off location. If the band shifts off location, this would cause the 1-2 band apply
pin to miss the band while stroking, creating a loss of drive.
The new style 1-2 band assembly can be used to service past model cases, but the 1-2 band stop must be removed.
IMPORTANT:
If the new 1-2 band assembly is used with a 1-2 band stop, durability concerns may result.
The new 1-2 band assembly will be used in production starting January 16, 1990 (Julian Date 016).
When the supply of previous style 1-2 band assemblies is depleted, the new 1-2 band assembly will be the only style available.
Part Number
Description
Model Year/Model Usage
8668984
Pkg. 1-2 Band Assembly
1984-90
All
-
1-2 Band Assembly
-
Instruction Sheet
