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Accumulator Assembly: Installation

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  1. Install a new 3-4 accumulator piston seal (1) to the 3-4 accumulator piston. See Fig 3.
  2. Install the 3-4 accumulator pin (1) into the transmission case and retain the pin with assembly lubricant. See Fig 8. Install the 3-4 accumulator piston (2) onto the pin (1) in the transmission case. Ensure the 3-4 accumulator piston legs face away from the transmission case.
  3. Install the alignment pin to the transmission case. Install the spacer plate to transmission case gasket and the spacer plate to valve body gasket to the spacer plate. Use assembly lubricant in order to retain the gaskets to the spacer plate.
    • The case gasket is identified by a "C". Ensure to place the case gasket on the transmission case side of the spacer plate.
    • The valve body gasket is identified by a "V". Ensure to place the valve body gasket on the valve body side of the spacer plate.
  4. Ensure the solenoid screens (1-2) are in place on the spacer plate. Place the checkball (3) on the spacer plate in the location shown. See Fig 9. Place the 3-4 accumulator spring (4) on the spacer plate. Install the spacer plate and related components to the transmission. Install the spacer plate support and the spacer plate support retaining bolts. Tighten the spacer plate support retaining bolts to specification. See TORQUE SPECIFICATIONS .
  5. After installing the spacer plate support (2), look through the hole in the spacer plate to ensure the checkball (1) has remained in the proper location. See Fig 10.
  6. Install a new 1-2 accumulator piston seal (1) to the 1-2 accumulator piston. See Fig 3. Install the 1-2 accumulator inner and outer springs to the 1-2 accumulator cover. See Fig 2. Install the 1-2 accumulator piston onto the pin in the 1-2 accumulator cover. Ensure the piston legs face the accumulator cover.
  7. Install the 1-2 accumulator cover and the accumulator cover retaining bolts. See Fig 1. Tighten the accumulator cover retaining bolts to specification. See TORQUE SPECIFICATIONS .
  8. Remove the alignment pin from the transmission case. Install the control valve body. See VALVE BODY & PRESSURE SWITCH . Install the transmission oil pan and filter. See DRAINING & REFILLING  under LUBRICATION. Lower the vehicle. Fill transmission with appropriate fluid to proper level. See LUBRICATION .
Fig 1: Removing & Installing Accumulator Assembly Bolts
G00057001Courtesy of GENERAL MOTORS CORP.
Fig 2: Applying Compressed Air Into 1-2 Accumulator
G00057002Courtesy of GENERAL MOTORS CORP.
Fig 3: Removing & Installing Accumulator Seals
G00089884Courtesy of GENERAL MOTORS CORP.
Fig 4: Inspecting Accumulator Cover For Damage
G00089889Courtesy of GENERAL MOTORS CORP.
Fig 5: Removing & Installing Oil Pass Cover
G00057004Courtesy of GENERAL MOTORS CORP.
Fig 6: Removing & Installing Spacer Plates
G00057005Courtesy of GENERAL MOTORS CORP.
Fig 7: Removing & Installing 3-4 Accumulator Piston
G00089872Courtesy of GENERAL MOTORS CORP.
Fig 8: Installing 3-4 Accumulator Pin
G00089886Courtesy of GENERAL MOTORS CORP.
Fig 9: Preparing Spacer Plate & Gaskets For Installation
G00089887Courtesy of GENERAL MOTORS CORP.
Fig 10: Inspecting Spacer Plate For Proper Check Ball Location
G00089888Courtesy of GENERAL MOTORS CORP.
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