High/Low Shift Components Cleaning and Inspection

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Fig 1: High/Low Shift Components

Courtesy of GENERAL MOTORS CORP.

Callout	Component Name
Preliminary Procedure Inspect all components or sub-components and perform any repair procedure necessary to fix the damage. If the damage cannot be repaired, replace the component or sub-component as indicated. Clean all components in cleaning solvent and air dry.
1	Transfer Case High/Low Clutch Inner Splines TIP: Inspect the inner splines for excessive looseness on the rear output shaft.
2	Transfer Case High/Low Clutch Teeth TIP: Inspect the engagement teeth for chips or excessive wear.
3	Transfer Case High/Low Shift Fork Collar TIP: Inspect the shift fork collar for wear.
4	Transfer Case High/Low Shift Fork Pads TIP: Inspect the pads for wear.
5	Transfer Case High/Low Shift Fork TIP: Inspect for cracks, broken areas, or other damage. The component must be replaced if damage is found. Refer to High/Low Shift Fork Replacement .
6	Transfer Case Control Actuator Shaft TIP: Inspect the shaft splines for excessive wear. The component must be replaced if damage is found. Refer to High/Low Shift Fork Replacement .
7	Transfer Case Actuator Shaft Gear Splines TIP: Witness marks at the location of the splines is normal.
8	Transfer Case Actuator Shaft Gear Teeth TIP: Inspect for chipped teeth, excessively worn gear surfaces, and debris embedded in the root of the teeth.
9	Transfer Case High/Low Shift Fork Pin TIP: Inspect the pin for wear. The component must be replaced if damage is found. Refer to High/Low Shift Fork Replacement .
10	Transfer Case High/Low Shift Fork Spring Assembly TIP: Inspect the cam lobes for wear or roughness. The component must be replaced if damage is found. Refer to High/Low Shift Fork Replacement .
11	Transfer Case Shift Fork Spring TIP: Inspect the spring for breakage. The component must be replaced if damage if found. Refer to High/Low Shift Fork Replacement .