Input Shaft Seal and Front Output Shaft Seal Installation

WARNING: This page is about a different car, the 2011 GMC Yukon XL, 2011 GMC Yukon, 2011 Chevrolet Tahoe, 2011 Chevrolet Suburban, and 2011 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Input Shaft Seal And Front Output Shaft Seal

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
1	Transfer Case Input Shaft Seal Ensure the bore of the front case half is free of dirt, oil, and cleaning solvent. Double lip input shaft oil seals are used on applications with a WET adapter cavity and with 4 speed transmission RPOs M30/M70/MW7/M99/ML9 only. Single lip input shaft oil seals are used on applications with a DRY adapter cavity and with 6 speed transmission RPOs MYC/MYD only, and are to be installed with the spring portion of the seal facing inward towards the internals of the transfer case. Special Tools J 42738 Seal Installer
2	Transfer Case Front Output Shaft Seal Special Tools J 8092 Driver Handle DT 50649 Seal Installer
3	Transfer Case Assembly TIP: Remove from J 3289-20 holding fixture and remove the J 45759 assembly fixture from the transfer case.

Callout

Component Name

Transfer Case Input Shaft Seal

Ensure the bore of the front case half is free of dirt, oil, and cleaning solvent.
Double lip input shaft oil seals are used on applications with a WET adapter cavity and with 4 speed transmission RPOs M30/M70/MW7/M99/ML9 only.
Single lip input shaft oil seals are used on applications with a DRY adapter cavity and with 6 speed transmission RPOs MYC/MYD only, and are to be installed with the spring portion of the seal facing inward towards the internals of the transfer case.

Special Tools
J 42738 Seal Installer

Transfer Case Front Output Shaft Seal

Special Tools

J 8092 Driver Handle
DT 50649 Seal Installer

Transfer Case Assembly
TIP: Remove from J 3289-20 holding fixture and remove the J 45759 assembly fixture from the transfer case.