Camaro V6-173 2.8L (1983)
Flex Plate: Customer Interest
Engine - Clicking/Knocking Noise
Number:
87-219
Section:
7A
Date:
SEPT., 1987
Subject: AUTOMATIC TRANSMISSION FLEXPLATE REPAIR
Model and Year:
ALL 1983-87 VEHICLES EQUIPPED WITH
2.8L ENGINE AND AUTOMATIC TRANSMISSION
TO:
ALL CHEVROLET DEALERS
Some 1983 thru 1987 vehicles equipped with a 2.8L V-6 engine and an automatic transmission may exhibit a noise comparable to an engine click or
knock at the rear of the engine. This condition may be due to a cracked flexplate assembly. Please perform the following inspection and repair
procedure:
1.
If customer comments of the aforementioned noise are encountered, disassemble the transmission from the engine and inspect the flexplate for
cracks at the crankshaft and the converter attaching bolts. If cracks are evident, a transmission misalignment has occurred. Remove and replace the
flexplate and perform the following procedure to insure the cause of the flexplate cracking is eliminated.
FIGURE 1
A.
Both 15.0 mm (0.590") long transmission case dowel pins, located in the rear of the engine cylinder and case assembly should be removed
and replaced with two 19.0 mm (0.748") long dowel pins, P/N 477231. Pin removal can be accomplished with the use of an "easy-out" and
large tee handle or other similar method. Care should be exercised to avoid damage/deformation to the precision machined locating
counterbores in the cylinder and case. Particular care should be taken to avoid cracking the cylinder and case. Install the pins to a depth that
provides 8.8 mm (0.35") protrusion, as shown in Figure 1.