Front Diff Pinion Seal Leak Fix?

[gpracer1]

It is a 99 4x4 with 3.73
Has anyone repaired a front diff pinion (yoke) seal leak?

It is just an oil seal, but I have never done one on a front diff. Is there a crush sleeve like on the rears or can you just remove the yoke and the seal and put the yoke back on?

 

[SunlitComet]

Drive Pinion Flange/Yoke, Seal, Dust Deflector Removal Procedure

• Tools Required
• J 8614-O1 Companion Flange Holder and Remover
• J 36366 Seal Installer

1. Raise the vehicle on a hoist.
2. Remove the propeller shaft from the axle.
3. Tie the propeller shaft to a frame rail or crossmember.
4. Measure the torque required to rotate the pinion. Record the torque value for reassembly.

1. Scribe a line (1) on the pinion stem, pinion nut and the companion flange (2) and record the number of exposed threads on the pinion stem.

1. Remove the nut. Use the J 8614-01.
2. Position the J 8614-01 on the flange so that the four notches on the tool face the flange.

1. Remove the flange. Use the J 8614-01. Use the special nut and forcing screw. Important: Carefully pry the seal from the bore. Do not distort or scratch the aluminum case.
2. Remove the oil seal.
3. Inspect the pinion flange for a smooth oil seal surface.
4. Inspect the pinion flange for worn drive splines.
5. Replace the pinion flange if necessary.
6. Remove the dust deflector.

• • Tap the deflector from the flange.
  • Clean up the stake points on the flange.

Installation Procedure

• Tools Required
• J 8614-01 Companion Flange Holder and Remover
• J 36366 Seal Installer

Important: Stake the new deflector at three new equally spaced positions. You must stake the new deflector in such a way that you do not damage the seal operating surface.

1. Install the dust deflector on the flange. Important: Position the oil seal in the bore, then place the J 36366 over the oil seal. Strike the J 36366 with a hammer until the seal flange seats on the axle housing surface. Drive the seal in straight, not at an angle, as this will damage the aluminum housing.
2. Install the oil seal. Use the J 36366.

Notice: Do not hammer the pinion flange/yoke onto the pinion shaft. Pinion components may be damaged if the pinion flange/yoke is hammered onto the pinion shaft.

1. Install the flange onto the pinion using the J 8614-01.
2. Place the washer and a new nut on the pinion threads and tighten the nut to the original scribed position using the scribe marks and exposed threads as reference. Notice: Refer to Fastener Notice in Service Precautions.
3. Measure the rotating torque of the pinion and compare this with the rotating torque recorded earlier.

• • Tighten the pinion nut by small increments until the torque required to rotate the pinion is 0.35 Nm (3 inch lbs.) greater than the original torque.

1. Install the propeller shaft.
2. Lower the vehicle.

 

[gpracer1]

Thanks for that.

 

[gpracer1]

Got her done in 1 hour, which included having to drive my other car to get a puller at Autozone......couldnt find mine.

No more leaky dirty ass bottom of truck.