A/T Low and Reverse Piston - Installation or Removal

Number 83-I-150 Section 7 Date 09/83
Subject: LOW AND REVERSE PISTON, INSTALLATION OR REMOVAL - THM 700-R4 (ALL)
On THM 700-R4 transmissions, the parking pawl must be removed prior to removing or installing the low and reverse piston. This procedure is necessary because the parking pawl may interfere with the low and reverse piston.

If the low and reverse piston is installed or removed prior to removing the parking pawl, the piston outer seal may be damaged. This will result in a condition of slipping in reverse or no reverse.

To remove the parking pawl, follow the Service Manual procedure. Do not grind the parking pawl or transmission case in an attempt to remove the interference point.