A/T Accumulator - Consistent Shift Points, Smoothness
Number 86-7-33 Date 8/86Subject: CONSISTENT SHIFT POINTS AND SMOOTHNESS USING NEW ACCUMULATOR PISTONS AND SEALS
1982-86 VEHICLES EQUIPPED WITH THM 700-R4 TRANSMISSIONS
Figure 1 - THM 700-R4 Transmission Identification Information:
BEGINNING JUNE 18, 1986, OR JULIAN DATE 169, (REFER TO FIGURE 1) ALL 1986 THM 700-R4 TRANSMISSIONS ARE BUILT USING NEW 1-2 AND 3-4 ACCUMULATOR PISTONS AND SEALS TO ASSIST IN MAINTAINING CONSISTENT SHIFT POINTS AND SMOOTHNESS..
Figure 2 - New Pistons and Seals:
WHEN SERVICING A 1982-86 THM 700-R4 TRANSMISSION, USE THE NEW PISTONS AND SEALS (REFER TO FIGURE 2) WHICH ARE AVAILABLE AS SERVICE PACKAGE PART NUMBER 8635909 (ONE PISTON AND ONE SEAL PER PACKAGE). ALSO, THE OIL SEAL IS AVAILABLE SEPARATELY AS SERVICE PART NUMBER 8635568.
IMPORTANT: THE SAME DESIGN ACCUMULATOR PISTON AND SEAL ARE USED IN BOTH THE 1-2 AND 3-4 CIRCUITS.
REFER TO THE APPROPRIATE SERVICE MANUAL FOR REMOVAL AND INSTALLATION PROCEDURES.