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Reverse Servo Assembly: Installation

NOTE: This is not an ordinary installation procedure and does not compensate for band wear.
    NOTE: Lubricate the reverse piston seal to facilitate assembly and prevent damage to the seal.
  1. Install the reverse servo return spring and piston.
    • Do not install the piston cover.
      Fig 1: Installing Reverse Servo Return Spring And Piston
      G03402071Courtesy of FORD MOTOR CO.
  2. Install the special tool and tighten the band apply bolt.
    Fig 2: Installing Special Tool And Tighten Band
    G03402072Courtesy of FORD MOTOR CO.
  3. Attach the special tool to the transmission.
    • Position the indicator stem on the flat portion of the reverse servo piston and zero the dial indicator.
      Fig 3: Attaching Special Tool To Transmission
      G03402073Courtesy of FORD MOTOR CO.
  4. Loosen the bolt until the piston stops against the tool.
    Fig 4: Loosing Bolt Until Piston Stops Against Tool
    G03402074Courtesy of FORD MOTOR CO.
  5. Verify that the amount of piston travel on the dial indicator is within specification.
    Fig 5: Verifying Amount Of Piston Travel On Dial Indicator
    G03402075Courtesy of FORD MOTOR CO.
  6. If piston travel is not within specification, select and install the correct servo piston assembly to bring the servo piston travel within specification.
    1. One groove
    2. Two groove
    3. Three groove
      Fig 6: Installing Correct Servo Piston Assembly
      G03402076Courtesy of FORD MOTOR CO.
  7. Remove the dial indicator and servo selection tool.
    Fig 7: Removing Dial Indicator And Servo Selection Tool
    G03402077Courtesy of FORD MOTOR CO.
  8. Install the correct reverse servo assembly.
    1. Install the reverse band servo spring.
    2. Install the reverse band servo piston and rod.
    3. Install the reverse band servo cover.
      Fig 8: Installing Correct Reverse Servo Assembly
      G03402078Courtesy of FORD MOTOR CO.
  9. Using the special tool, install the reverse servo retaining ring.
    1. Compress the servo spring.
    2. Install the reverse band servo retaining ring.
      Fig 9: Compressing Servo Spring
      G03402079Courtesy of FORD MOTOR CO.
  10. Install the main control valve body. For additional information, refer to MAIN CONTROL VALVE BODY .
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