Riviera V6-231 3.8L Turbo VIN 8 4-bbl (1983)
Clutch: Customer Interest
M/T - Slipping or No Drive
SUBJECT:
SLIPPING OR NO DRIVE
MODELS AFFECTED: ALL 1983 THM 325-4L TRANSMISSIONS
Model Year
1983
Bulletin No
83138
File In Group
70
Number16
Date
June '83
Some 1983 THM 325-4L transmissions may experience a slipping or no drive condition. This condition, while not noticeable in reverse, could be caused
by a missing or loose solid cup plug in the input shaft of the forward clutch assembly.
Figure 1 Forward Clutch Input Shaft Cup Plug
Figure 2 Output Shaft
When servicing any 1983 THM 325-4L transmission for a slipping or a no drive condition, and the forward clutch assembly shows signs of burning,
inspect the housing end of the input shaft which is part of the forward clutch assembly (Figure 1). If the solid cup plug is missing or loose, you will lose
apply pressure to the forward clutch piston, and a no drive or slipping condition will result. If the cup plug is missing, it must be located before
reassembly of the transmission. It could possibly be in the open end of the output shaft (Figure 2). Simply tape the end of the output shaft on a table to
