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Accumulator Assembly: Installation

NOTE: Tools required: (J25025-B) Pump and Valve Body Alignment Pin Set (J-36850) and Transjel® transmission assembly lubricant.
  1. Install the 3-4 accumulator pin into the transmission case. Install the 3-4 accumulator piston onto the pin. The piston legs must face the valve body. Install the 3-4 accumulator piston oil seal ring. Install the 3-4 accumulator piston spring. See Fig 5. Install the (J25025-B) to the transmission case.
  2. Install the case gasket and the valve body gasket to the spacer plate. The case gasket is identified by a "C". The valve body gasket is identified by a "V". Use the (J-36850) to retain the gaskets to the spacer plate. Install the spacer plate and the gaskets to the transmission case. See Fig 4.
  3. Install the oil pass cover and the oil pass cover bolts. Tighten the bolts to specification. See TORQUE SPECIFICATIONS .
  4. Install the 1-2 accumulator piston with the piston legs facing toward the case. See Fig 2. Install the oil seal ring to the accumulator cover.
  5. Install the 1-2 accumulator spring onto the piston. Install the 1-2 accumulator cover and the cover bolts. Tighten the bolts to specification. See TORQUE SPECIFICATIONS .
  6. Remove the (J25025-B) from the transmission case. Install the control valve body. See VALVE BODY & PRESSURE SWITCH .
Fig 1: Removing Accumulator Assembly Bolts
G00057001Courtesy of GENERAL MOTORS CORP.
Fig 2: Removing & Installing 1-2 Accumulator Assembly
G00057002Courtesy of GENERAL MOTORS CORP.
Fig 3: Removing & Installing Oil Pass Cover
G00057004Courtesy of GENERAL MOTORS CORP.
Fig 4: Removing & Installing Spacer Plates
G00057005Courtesy of GENERAL MOTORS CORP.
Fig 5: Removing & Installing 3-4 Accumulator Assembly
G00089872Courtesy of GENERAL MOTORS CORP.