High/Low Shift Components Cleaning And Inspection

Fig 1: High/Low Shift Components Cleaning And Inspection Points

Courtesy of GENERAL MOTORS COMPANY

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 NOTE: Inspect the inner splines for excessive looseness on the rear output shaft.
2	Transfer Case High/Low Clutch Teeth NOTE: Inspect the engagement teeth for chips or excessive wear.
3	Transfer Case High/Low Shift Fork Collar NOTE: Inspect the shift fork collar for wear.
4	Transfer Case High/Low Shift Fork Pads NOTE: Inspect the pads for wear.
5	Transfer Case High/Low Shift Fork Procedure 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 Procedure 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 NOTE: Witness marks at the location of the splines is normal.
8	Transfer Case Actuator Shaft Gear Teeth NOTE: 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 Procedure 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 Procedure 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 Procedure Inspect the spring for breakage. The component must be replaced if damage if found. Refer to High/Low Shift Fork Replacement .