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Assembly & Installation

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  1. Install new seals on all the 2-4 servo pistons and the cover. See Fig 7.
  2. Install the servo cushion spring and the cushion spring retainer in the 2nd apply piston. Use the Piston Remover to compress the second apply piston. Install the second apply piston retaining ring. See Fig 6.
  3. Install the following parts:
    • 2nd apply piston pin.
    • Spring.
    • Washer.
    • Retainer ring.
  4. Install the following parts:
    • Servo return spring.
    • 4th apply piston.

    See Fig 5 and Fig 6 .

  5. Lower vehicle. Fill transmission with appropriate fluid to proper level. See LUBRICATION .
Fig 1: Installing Servo Cover Depressor On Transmission
G00089864Courtesy of GENERAL MOTORS CORP.
Fig 2: Removing Servo Cover Retaining Ring
G00089865Courtesy of GENERAL MOTORS CORP.
Fig 3: Removing Servo O-Ring
G00089866Courtesy of GENERAL MOTORS CORP.
Fig 4: Inspecting Servo Components For Damage
G00089867Courtesy of GENERAL MOTORS CORP.
Fig 5: Removing & Installing Servo Piston & Spring
G00089913Courtesy of GENERAL MOTORS CORP.
Fig 6: Removing & Installing Retainer Ring & Spring
G00089914Courtesy of GENERAL MOTORS CORP.
Fig 7: Using Piston Remover To Compress 2nd Apply Piston
G00089915Courtesy of GENERAL MOTORS CORP.
Fig 8: Exploded View Of 2-4 Servo Assembly
G00089916Courtesy of GENERAL MOTORS CORP.
Fig 9: Installing Band Apply Pin & Installer
G00089917Courtesy of GENERAL MOTORS CORP.
Fig 10: Measuring For Correct Pin Length
G00089918Courtesy of GENERAL MOTORS CORP.
Fig 11: Measuring Apply Piston Dimension
G00089919Courtesy of GENERAL MOTORS CORP.
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