Rear Output Shaft Cleaning and Inspection
WARNING: This page is about a different car, the 2023 GMC Sierra 3500 HD and 2023 GMC Sierra 2500 HD. However, it is still accessible from the selected car via links, so may be relevant.
- 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.
- Inspect the transfer case rear output shaft splines (1).
- Inspect the transfer case oil pump and rear output shaft speed reluctor wheel engagement splines (2).
- Inspect the transfer case front output shaft drive sprocket bearing surface (3) for scoring, brinelling, pitting, or excessive wear.
- Inspect transfer case two/four wheel drive clutch hub engagement splines (4).
- Inspect the transfer case control actuator lever bearing surface (5) for scoring, brinelling, pitting, or excessive wear.
- Inspect the transfer case control actuator lever thrust bearing surface (6) for scoring, brinelling, pitting, or excessive wear.
- Inspect the transfer case engagement splines (7).
- Inspect the transfer case input shaft pilot bearing surface (8) for scoring, brinelling, pitting, or excessive wear.
- Inspect oil galleries (9).
NOTE:
Witness marks at the location of the yoke are normal.
NOTE:
Witness marks at the location of the components are normal.
NOTE:
Witness marks at the location of the hub is normal.
NOTE:
Witness marks at the location of the splines is normal.
NOTE:
Compressed air may be necessary to clean the oil galleries.