11 Inch Axle

Removal Procedure

^ Tools Required
- J8614-01 Pinion Flange Holder/Remover
- J24384 Pinion Oil Seal Installer

The pinion oil seal and the pinion flange may be replaced with the carrier assembly installed in the vehicle.





1. Raise the vehicle.
2. Disconnect the propeller shaft. Refer to one of the following procedures:
^ Propeller Shaft Replacement - One Piece.
^ Propeller Shaft Replacement - Two Piece.
^ Propeller Shaft Replacement - Three Piece.

3. Make an alignment mark (1) on the pinion stem, pinion nut and pinion flange (2) for use as an installation guide.





4. Remove the pinion nut using J8614-01.





5. Remove the flange using J8614-01 with the special nut and forcing screw.
6. Pry the oil seal from the bore.
^ Do not damage the machined surfaces
^ Clean any foreign material from the contact area

7. Inspect the following
^ The oil seal mating surfaces for any burrs which may cause seal failure
^ Flange deflector for any abnormality such as cracking or distortion

8. Replace parts as necessary.

Installation Procedure

^ Tools Required
- J8614-01 Pinion Flange Holder/Remover
- J24384 Pinion Oil Seal Installer





1. Lubricate the inside diameter of the new oil seal with extreme pressure lubricant such as GM P/N 9985038.
2. Install the oil seal into the bore using the J24384.

Important: Do not coat the bearing.

3. Pack the cavity between the pinion stem, pinion flange and pinion nut with a non-hardening sealer such as Permatex Type A or the equivalent.





4. Install the pinion flange using the J8614-01 and use the alignment marks as a guide.

Notice: Refer to Fastener Notice in Service Precautions.

5. Install the pinion nut using the J8614-01 and use the alignment marks as a guide.
Tighten the pinion nut to 596 - 678 Nm (440 - 550 ft. lbs.).
6. Install the propeller shaft. Refer to one of the following procedures:
^ Propeller Shaft Replacement - One Piece
^ Propeller Shaft Replacement - Two Piece
^ Propeller Shaft Replacement - Three Piece