A/T - THM 2004R Firm or Harsh/Soft or Slipping 1-2 Shift
SIL 86-10 MaySUBJECT: THM 200-4R
PROBLEM:
I. FIRM OR HARSH 1-2 SHIFT
II. SOFT OR SLIPPING 1-2 SHIFT
FIRM OR HARSH 1-2 SHIFT
Use the following service package for transmission models BT & BY.
Service package: 8639912
1- Control Valve Body Assembly
1- Intermediate Servo Cushion Spring
1- 1-2 Accumulator Piston Spring
1- Pressure Regulator Valve Spring
1- Control Valve Body Spacer Plate
1- Instruction Sheet
SERVICE PROCEDURE:
Remove the following parts and replace them with the parts contained in the above service package.
1. Control Valve Body Assembly
2. Intermediate Servo Cushion Spring
3. 1-2 Accumulator Piston Spring
4. Pressure Regulator Valve Spring
5. Control Valve Body Spacer Plate
6. *3-4 Accumulator Piston Spring
Note
The 3-4 Accumulator Piston Spring (item # 6 above) is to be removed and discarded. The 3-4 accumulator piston is to be assembled as shown in Figures 1 and 2.
SOFT OR SLIPPING 1-2 SHIFT
Use the following service package for transmission models BQ and BM.
Service Package 8639914 for the BQ and BM model transmissions.
1- Control Valve Body Assembly
1- 3-4 Accumulator Spring
Service Package 8639915 for the OM model transmission.
1- Control Valve Body Assembly
1- 3-4 Accumulator Spring
SERVICE PROCEDURE:
Remove the control valve body assembly and the 3-4 accumulator spring from the transmission and replace with the control valve body assembly and the 3-4 accumulator spring provided in the appropriate service package.