TCC - Elimination of the Valve Train
Number 83-I-107 Section 7 Date 07/83Subject: ELIMINATION OF THE [1][2]TORQUE CONVERTER CLUTCH VALVE TRAIN - 1982 AND 1983 THM 200-4R TRANSMISSION
Figure 1:
Figure 2:
Beginning late in the 1982 model year, the THM 200-4R transmission control valve assemblies were changed to eliminate the Torque Converter Valve Train (see Figure 1). The computer command control unit (C-3) controls the converter clutch making the T.C.C. valve train unnecessary.. The new control valve assembly (see Figure 2 shown on the reverse side) will have a solid bushing in it to direct oil flow.
When servicing any 1982 or 1983 THM 200-4R transmission that has a C-3 system (all except diesel and Canadian models), it is important that the proper spacer plate and gaskets be used. Refer to the following charts and illustrations for proper usage.
1982 THM 200-4R
Control Valve Assembly, Spacer
MODEL Plate & Gasket Service Package
AA & AP 8634981
BY 8634977
OG 8634978
CO 8634979
1983 THM 200-4R
CONTROL VALVE GASKET SPACER
MODEL ASSEMBLY PACKAGE PLATE
AA & AP 8639128 8634969 8639027
BR 8639129 8634969 8639023
BY & BT 8639133 8634969 8639023
OG 8639218 8634969 8639026
OZ 8639315 8634969 8639174
Figure 3:
Figure 4:
SERVICE INFORMATION
The spacer plate and gaskets are included in the 1982 service packages to prevent mixing of the new and past design spacer plates.. New gaskets (see Figures 3 & 4 can be used with new and past design control valve assemblies. New spacer plates cannot be used with past design control valve assemblies.
Figure 2:
Location of the solid bushing is important. Locate the bushing so that the coiled pin fits into the groove of the bushing (refer to Figure 2).