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Old 03-31-2012, 03:05 PM   #1
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Front pinion seal

Has any body changed a front pinion seal in a 01 tj? and is it a hard job to replace? I can get it done for $150.00 but would like to do the job myself to say I did it.

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Old 03-31-2012, 03:20 PM   #2
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PINION SHAFT SEAL
REMOVAL
(1) Raise and support the vehicle.
(2) Remove wheel and tire assemblies.
(3) Remove brake rotors and calipers. Refer to
Group 5, Brakes, for proper procedures.
(4) Mark the propeller shaft and pinion yoke for
installation reference.
(5) Remove the propeller shaft from the yoke.
(6) Rotate the pinion gear three or four times.
(7) Measure the amount of torque necessary to
rotate the pinion gear with a (in. lbs.) dial-type
torque wrench. Record the torque reading for installation
reference.
(8) Using Holder 6958 to hold the pinion yoke,
remove the pinion nut and washer.
(9) Use Remover C-452 and Wrench C-3281 to
remove the pinion yoke
INSTALLATION
(1) Apply a light coating of gear lubricant on the
lip of pinion seal. Install seal with Installer C-3972-A
and Handle C-4171
(2) Install yoke on the pinion gear
Install the pinion washer and a new nut on the
pinion gear. Tighten the nut only enough to
remove the shaft end play.
(4) Rotate the pinion shaft using a (in. lbs.) torque
wrench. Rotating torque should be equal to the reading
recorded during removal, plus an additional 0.56
Nm (5 in. lbs.)
.
(5) If the rotating torque is low, use Holder 6958 to
hold the pinion yoke
, and tighten the pinion
shaft nut in 6.8 Nm (5 ft. lbs.) increments until
proper rotating torque is achieved.
CAUTION: If the maximum tightening torque is
reached prior to reaching the required rotating
torque, the collapsible spacer may have been damaged.
Replace the collapsible spacer.
(6) Align the installation reference marks on the
propeller shaft and yoke and install the propeller
shaft.

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Old 03-31-2012, 03:24 PM   #3
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But in lay presons words, just remove the drive shaft, Spin the pinion by hand a few times to get feel of how it feels and how hard or easy it is. Then remove the big nut on the end of pinion, pull the yoke off(easy to do by hand), remove seal. put new seal in. Install yoke and nut. Tighten it back down to no end play, and it feels the same when you spin it as it did before the seal was replaced... OH YEAH dont tighten too much or you screw the crush sleeve up.. Pretty hard to do with short ratchet.
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Old 03-31-2012, 03:57 PM   #4
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Thanx I am going to try this next wkend, if I need help I will ask.
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Old 03-31-2012, 04:02 PM   #5
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Yeah he charging about 100 too much. 20 minute job at most.
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Old 03-31-2012, 04:06 PM   #6
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Thanx for the info.

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