Tools Required
J 25025-B
Pump and Valve Body
Alignment Pin Set
Removal Procedure
Caution: Refer to Safety Glasses Caution in the Preface section.
Caution: Refer to Vehicle Lifting Caution in the Preface section.
- Raise and support the vehicle. Refer to
Lifting and Jacking the Vehicle
.
- Remove the transmission oil pan and filter.
Refer to
Automatic Transmission Fluid and Filter Replacement
.
Important: The 1-2 accumulator can be removed without
removing the control valve assembly.
- Remove the control valve body. Refer to
Valve Body and Pressure Switch Replacement
.
- Remove the accumulator cover retaining bolts.
- Remove the 1-2 accumulator cover assembly.
- Disassemble the 1-2 accumulator.
6.1. | Blow compressed air into the 1-2 accumulator cover, as shown, to remove
the 1-2 accumulator piston. |
6.2. | Remove the 1-2 accumulator inner (not in all models) and outer springs. |
- Inspect the 1-2 accumulator inner (not in all models) and outer springs
for cracks.
- Remove the 1-2 accumulator piston seal (1)
from the 1-2 accumulator piston.
- Inspect the 1-2 accumulator piston for the following defects:
- Inspect
the 1-2 accumulator cover for the following defects:
- Remove
the spacer plate support retaining bolts.
Important: Use care not to drop the following items
that will be removed along with the spacer plate:
• | The number 1 checkball |
• | The 3-4 accumulator spring |
• | The 3-4 accumulator pin |
- Remove the spacer plate support.
- Remove the spacer plate to valve body gasket, the spacer plate and the spacer
plate to transmission case gasket.
- Remove the 3-4 accumulator piston (2).
- Inspect the 3-4 accumulator spring for cracks.
- Remove the 3-4 accumulator piston seal (1)
from the 3-4 accumulator piston.
- Inspect the 3-4 accumulator piston for the following defects:
Installation Procedure
- Install a new 3-4 accumulator piston seal
(1) to the 3-4 accumulator piston.
- Install the 3-4 accumulator pin (1) into
the transmission case and retain the pin with
J 36850
J 36850 .
- Install the 3-4 accumulator piston (2)
onto the pin (1) in the transmission case.
Ensure that the 3-4
accumulator piston legs face away from the transmission case.
- Install the
J 25025-B
(2, 3) 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
J 36850
in order to retain the gaskets
to the spacer plate.
• | The case gasket is identified by a C. |
• | Be sure to place the
case gasket on the transmission case side of the spacer plate. |
• | The valve body gasket is identified by a V. |
• | Be sure to place
the valve body gasket on the valve body side of the spacer plate. |
- Ensure that the solenoid screens (1, 2) are in place on the spacer
plate.
- Place the checkball (3) on the spacer plate in the location shown.
- Place the 3-4 accumulator spring (4) on the spacer plate.
- Install the spacer plate and related components to the transmission.
Notice: Refer to Fastener Notice in the Preface section.
- Install the spacer plate support and the spacer plate support retaining bolts.
Tighten
Tighten the spacer plate support retaining bolts
to 11 N·m (97 lb in).
- After installing the spacer plate support
(2), look through the hole in the spacer plate to make sure that the checkball (1)
has remained in the proper location.
- Install a new 1-2 accumulator piston seal
(1) to the 1-2 accumulator piston.
- Install
the 1-2 accumulator inner (not in all models) and outer springs to the 1-2 accumulator
cover.
- Install the 1-2 accumulator piston onto the pin in the 1-2 accumulator
cover.
Ensure that the piston legs face the accumulator cover.
- Install the 1-2 accumulator cover and the
accumulator cover retaining bolts.
Tighten
Tighten the accumulator cover retaining bolts to
11 N·m (97 lb in).
- Remove the
J 25025-B
from
the transmission case.
- Install the control valve body. Refer to
Valve Body and Pressure Switch Replacement
.
- Install the transmission oil pan and filter. Refer to
Automatic Transmission Fluid and Filter Replacement
.
- Lower the vehicle.
- Fill the transmission to the proper level with DEXRON® VI transmission
fluid. Refer to
Transmission Fluid Check
.
Important: It is recommended that transmission adaptive
pressure (TAP) information be reset.
Resetting the TAP values using a
scan tool will erase all learned values in all cells. As a result, The ECM or TCM
will need to relearn TAP values. Transmission performance may be affected as new TAP
values are learned.
- Reset the TAP values. Refer to
Transmission Adaptive Functions
.