K 2500 Suburban 4WD V8-5.7L VIN R (1999)
Seals and Gaskets: Service and Repair
Transfer Case - BW 4470 (Two Speed Manual)
Removal Procedure
1. Raise and the vehicle. Refer to Vehicle Lifting.
2. Remove the transfer case shield.
3. Remove the front propeller shaft if replacing the front seal.
4. Remove the rear propeller shaft if replacing the rear seal.
5. Remove the seal.
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Use a screwdriver in order to remove the seal. Do not damage the sealing bore.
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The yoke nut and the flat washers are not used at the rear on some models.
Installation Procedure
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Tools Required
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J 37668-A Output Shaft Seal Installer.
1. Install the seal using the following procedure:
1.1.
Lubricate the seal lips with petroleum jelly or with transmission oil.
1.2.
Install the seal using the J 37668-A.
2. Install the front propeller shaft if required.
3. Install the rear propeller shaft if required.
4. Install the transfer case shield.
5. Check the transfer case oil level and add oil as necessary.
6. Lower the vehicle.
