A/T Input Clutch Housing Turbine Shaft - Revised
Number: 83-I-67Section: VIIc
Date: May, 1983
Subject: INPUT CLUTCH HOUSING TURBINE SHAFT REDESIGN - 1983 ALL MODELS WITH THM 700-R4
TO: ALL CHEVROLET DEALERS
FIGURE 1 - INPUT CLUTCH HOUSING:
Beginning early in the 1983 model year, the 700-R4 transmission turbine shaft, which is pressed into the input clutch housing, was redesigned to accommodate a 245 mm diameter converter assembly. The first design, which is still used in some applications, is designed to accommodate a 298 mm diameter converter assembly (Figure 1).
When servicing any THM 700-R4 transmission that necessitates replacing the input clutch housing refer to the following chart for ordering parts:
INPUT CLUTCH HOUSING & SHAFT ASSEMBLY
First Design Second Design
(Figure #1) (Figure #1)
P/N 8647127 P/N 8647128
"O" ring and small "O" ring is below
Identification journal are above spline with no small
spline journal
YN, YG, YP, YK, Y9, TC, TD T2, VA, ML, MP, MS, T7, YH,
MB, MC, MJ, VN, TE, TH, TK, YF, PQ
Model Usage
MD, ME, MK, MW, VH, TS, TZ,
T8, TP, MH, VJ, TL
If the retainer assembly-ball check valve capsule located in the spline end of the turbine shaft or the turbine shaft "O" ring should have to be replaced, order replacement parts as per the following chart:
FIGURE 1 - INPUT CLUTCH HOUSING:
Input Hsg. & Shaft Asm. Retainer Asm.-Ball Check "O" Ring
Capsule
First Design
(Figure #1) P/N 8634503 P/N 8630049
P/N 8647127
Second Design
(Figure #1) P/N 8647037 P/N 8636033
P/N 8647128
Follow your service manual guidelines when installing the retainer assembly-ball check capsule. The turbine shaft "O" ring should not be installed until after the oil pump assembly is installed to prevent damage to the "O" ring.