Buick Regal: Transfer Case Fluid Replacement

Removal Procedure

1. Raise and suitably support the vehicle. Refer to Lifting and Jacking the Vehicle.

2.

NOTE:

• When performing the following procedure, use only hand tools to remove and install the drain and fill plugs.
• Ensure that an approved drain pan is used when draining the transfer case.

Remove and DISCARD the oil drain plug (1) and seal.

3.

Remove and DISCARD the fill plug (1) and seal.

4. Allow the transfer case to drain completely.

Installation Procedure

1.

CAUTION: Refer to Fastener Caution.

Install a NEW drain plug (1) and seal and tighten to 50 N.m (37 lb ft).

2. Fill the transfer case to the bottom of the fill plug hole with the recommended fluid.

3.

Install a NEW fill plug (1) and seal and tighten to 50 N.m (37 lb ft).

DRAIN PLUG REPLACEMENT

Removal Procedure

1. Remove the power transfer unit heat shield.

2.

NOTE: When performing the following procedure, use only hand tools to remove and install the drain and fill plugs.

NOTE: Ensure that an approved drain pan is used when draining the transfer case.

Remove and DISCARD the oil drain plug (2) and seal.

3. Remove and DISCARD the fill plug (1) and seal.

4. Allow the transfer case to drain completely.

Installation Procedure

1.

CAUTION: Refer to Component Fastener Tightening Caution.

Install a NEW drain plug (2) and seal and tighten to 40 N.m (30 lb ft).

2. Fill the transfer case to the bottom of the fill plug hole with the recommended fluid.

3. Install a NEW fill plug (1) and seal and tighten to 40 N.m (30 lb ft).

4. Install the power transfer unit heat shield.

FILL PLUG REPLACEMENT

Removal Procedure

1. Raise and suitably support the vehicle. 2. Remove the power transfer unit heat shield from the transmission. 3.

Remove and DISCARD the fill plug (1) and seal.

Installation Procedure

1. Fill the transfer case to the bottom of the fill plug hole with the recommended fluid.

2.

CAUTION: Refer to Component Fastener Tightening Caution.

Install a NEW fill plug (1) and seal and tighten to 40 N.m (30 lb ft).

3. Install the power transfer unit heat shield to the transmission.

4. Lower the vehicle.

POWER TRANSFER UNIT VENT HOSE REPLACEMENT (2.0L LTG)

Removal Procedure

1.

Disconnect the power transfer unit vent hose assembly (1) from the radiator surge tank assembly.

2. Disconnect the power transfer vent hose assembly from the power transfer unit.

3. Remove the power transfer unit vent hose assembly (1) from the vehicle.

Installation Procedure

1.

NOTE: Ensure the vent hoses are free of kinks and routed clear of sharp objects.

Connect the power transfer unit vent hose assembly (1) to the radiator surge tank assembly.

2. Connect the power transfer unit vent hose assembly to the power transfer unit.

INTERMEDIATE DRIVE SHAFT REPLACEMENT

Removal Procedure

1. Power transfer unit cover - Remove.

2.

Remove and Discard the intermediate drive shaft retainer (1) from the transfer case.

3. Pull the intermediate drive shaft (2) out of the transfer case.

Installation Procedure

1.

Install the intermediate drive shaft (2) to the transfer case.

2. Install the NEW intermediate drive shaft retainer (1) to the transfer case.

3. Power transfer unit cover - Install.

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