A/T - Two Stackups for 3-4 Accumulator Piston & Spring

87pontiac15
Bulletin Number: 88-7-6
Reference Number: 877105
Publish Date: 12/87
Subject: 3-4 ACCUMULATOR PISTON AND SPRING POSITIONING INFORMATION

Models

Affected: 1986-88 MODELS EQUIPPED THM 200-4R (MW9)

Figure 1 - THM 200-4R Transmission Identification Information:

BULLETIN COVERS: (Figure 1)

Two possible stackups for the 3-4 accumulator piston and spring, for different calibration requirements..

Figure 2 - 3-4 Accumulator Piston And Spring Assembly:

Figure 3 - 3-4 Accumulator Piston And Spring Assembly:

SERVICE ACTION:

When servicing a THM 200-4R transmission, refer to Figures 2 and 3 to check the positioning of the 3-4 accumulator piston and spring for all 1986, 1987 and 1988 models.
SERVICE MANUAL REFERENCE:

Refer to the THM 200-4R Service Manual for 3-4 accumulator removal and installation procedures.