Pinion seal leak

on the actual front diffr, pinion or the front transfer case seal
the front seal is like the rear.
its a crush cage.
that means when you remove the pinion yoke/flange big bolt
the crash cage is destroyed. also wrecking pinion gear to ring gear back lash..oops.. big big mess-up there...$$$$$$
and such cage must be replaced.
questions????????????
how can you be sure its leaking, when the engine this old loves leak oil

i bet that oil on the ground does not small at all like the nasty stink of hypoid GL5 gear lube. I BET

why not post how to find leaks first
and not do $1000 damage

no engine size posted G16? J20?>
The G16, ill demonstrate (coin toss)
Distributor 2 , o-rings leak like made, all do this old !!!!
same with the 60k mile service and valve cover gasket
all leak, for that reason alone, on all 1990s era
next is cam seal
crank seal
pan seal (or pan is rusted thru as many see (today)
oil pump seal
and gawd forbid the rear main seal , engine.


easy peasy japanezzy

why not ask your mechanic to sniff that oil first and save a fortune
guessing.
!!!!

see man pulling axle to remove pan
wana do that?
http://www.fixkick.com/axles/Pan-drop/pandrop.html

to replace this seal, remove the carrier first
then take it to a shop that can rework the carrier
the correct way.

There are few help links showing exact accurate procedure to replace Rack and Pinion. Click the link below and follow the procedure:-----
Pinion Seal Replace on Dodge Dakota? http://howtobyme.blogspot.in/2012/04/pinion-seal-replace-on-dodge-dakota.html

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How to Replace a Rear Pinion Seal.
http://schematicsdiagram.blogspot.com/2011/07/how-to-replace-rear-pinion-seal.html
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How to replace Power steering rack and pinion gear on Chevy Silverado 2500 HD? http://technoanswers.blogspot.in/2012/02/how-to-replace-power-steering-rack-and.html

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How to replace Power Rack and Pinion Steering Gear on Acura Car Models? http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-power-rack-and-pinion.html

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How to replace power rack and pinion steering gear on Toyota cruiser? http://repairhelpcenter.blogspot.in/2012/02/how-to-replace-power-rack-and-pinion.html

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How to replace Power Rack and Pinion Steering Gear on Acura Car Models? http://repairhelpcenter.blogspot.com/2011/11/how-to-replace-power-rack-and-pinion.html


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Front Drive Pinion Seal Removal on Ford Explorer? http://repairhelpcenter.blogspot.in/2012/03/front-drive-pinion-seal-removal-on-ford.html

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How to Replace Driveshaft, Pinion Flange & Seal?

http://repairhelpcenter.blogspot.in/2012/03/how-to-replace-driveshaft-pinion-flange.html

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How to Replace Power Rack & Pinion Steering Gear On 2007 Ford Taurus? http://repairhelpcenter.blogspot.in/2012/03/how-to-replace-power-rack-pinion.html


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How to Remove Power Rack & Pinion Steering Gear on Ford Windstar? http://repairhelpcenter.blogspot.in/2012/03/how-to-remove-power-rack-pinion.html

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Power Rack & Pinion Steering Gear replacing details for Buick Park Avenue and Pontiac Bonneville

http://repairhelpcenter.blogspot.in/2012/03/power-rack-pinion-steering-gear.html

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How to Replace Power Rack & Pinion Steering Gear on Mercedes Benz Truck? http://howtobyme.blogspot.in/2012/03/how-to-replace-power-rack-pinion.html


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How to replace Power Rack & Pinion Steering Gear on Toyota 4Runner? http://howtobyme.blogspot.in/2012/03/how-to-replace-power-rack-pinion_27.html

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Power Rack & Pinion Steering Gear Replacing on Toyota Land Cruiser & Sequoia? http://schematicsdiagram.blogspot.in/2012/03/power-rack-pinion-steering-gear.html

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Power Rack & Pinion Steering Gear Removal on Toyota RAV4? http://repairhelpcenter.blogspot.in/2012/03/power-rack-pinion-steering-gear-removal.html

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How to Replace Power Rack & Pinion Steering Gear on Toyota Sienna? http://technoanswers.blogspot.in/2012/03/how-to-replace-power-rack-pinion.html

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These details will help.
Thanks.

There are two places it can leak from. The rear differential cover or the pinion seal at the front of the differential. Both are easy to replace. The pinion seal will require a little more labor than the differential cover plate. You will have to remove the drive line and then break the pinion nut loose. Use a good impact wrench for this and a six point socket for that step. Then you will need to remove the yoke from the pinion gear. Should be able to tap it off. If not use a puller. Remove the old pinion seal with a flat tip screw driver by driving it through the lip of the old seal and push the screwdriver to the side and it will pop out. Clean the hole for the new seal. install the new seal and the yoke. Tighten the pinion nut. You will need to get access to a manual to check the bearing preload on the pinion nut. Then use a torque wrench to check for correct bearing preload. Re-install the drive line.

It is very easy to replace either the pinion seal or the cover gasket. To replace the pinion seal, remove the driveshaft and let it hang ( it shouldn't come out of the tranny). Remove the pinion nut and the pinion yolk ( may have to tap it with a hammer). With a screwdriver and hammer remove the seal,,then wipe the seal area clean. Take new seal and tap in with hammer and replace yolk and drive shaft.

THE DRIVE SHAFT HAS TO BE REMOVE TO REPLACE THE PINION SEAL.DONT MATTER IF SEAL NOT LEAKING BUT SEAL NEED TO BE REPLACED TO KEEP OUT WATER DIRT OUT OF THE TRANSFER CASE TO KEEP FROM DAMAGING THE PINION BEARING.

wow sorry about that. well there is no grease or quick fix for that, the pinion seal will have to be replaced. with the drive shaft removed you can remove the nut holding the yoke to the pinion gear (rear end) ,pop out the old seal and drive in the new seal, then reinstall the yoke and torque down the nut and reinstall the drive shaft. fluid loss while replacing the seal should be minimal but if you do lose fluid you may need to refill.

Remove the driveshaft. You need an impact gun to remove the pinion yoke nut. Pull the yoke out and replace the seal. Make sure you tighten the pinion nut to the correct torque spec. (The dealer can tell you how tight it needs to be.)

The problem with only replacing the seals is that the inside of the rack maybe worn which caused the seals to leak in the first place. First I would try some Lucas or similar product power steering stop leak. This may or may not stop the leak for awhile. Second...I would replace the rack with a rebuilt unit. I personally would not try to replace the seals. Good luck with it.

Bob

here is a diagram on how to replace the front pinion seal.
please do not forget to rate and comment about your experience with fixya.

1. Before servicing the vehicle, please familiarize yourself with safety procedures.
   
2. Remove both half shafts.
   
3. Mark propeller shaft and pinion flange for installation reference.
   
4. Remove front propeller shaft.
   
5. Rotate pinion gear three to four times, to verify pinion rotates smoothly.
   
6. Record pinion flange rotating torque with an inch pound torque wrench for installation reference.
   
7. Hold flange with Holder 6719 and four bolts and washers.
   
8. Remove pinion nut.
   
9. Remove flange with Remover C-452.
   
10. Remove pinion seal with a pry tool.
    Removing the companion flange
    Measuring pinion rotating torque
    Pinion seal installer
    Tightening the pinion nut
    

To install:

1. Apply a light coating of gear lubricant on the lip of pinion seal.
   
2. Install seal with Installer C-3972-A and Handle C-4171.
   
3. Install pinion flange onto the pinion with Installer C-3718 and holder.
   
4. Hold pinion flange with Holder 6719A.
   
5. Install new pinion nut and tighten nut until there is zero bearing end-play.
   
   CAUTION Do not exceed the minimum tightening torque when installing the companion flange at this point. Damage to the collapsible spacer or bearings may result.
   
6. Tighten pinion nut to 271 Nm (200 ft. lbs.).
   
   CAUTION Never loosen pinion nut to decrease pinion bearing rotating torque and never exceed specified preload torque. If preload torque or rotating torque is exceeded a new collapsible spacer must be installed.
   
7. Record pinion flange rotating torque, with a torque wrench. Rotating torque should be equal to the reading recorded during removal plus an additional 0.56 Nm (5 inch lbs.).
   
8. If rotating torque is low, tighten pinion nut in 6.8 Nm (5 ft. lbs.) increments until rotating torque is achieved.
   
   CAUTION If maximum tightening torque is reached prior to reaching the required rotating torque, the collapsible spacer may have been damaged. Replace the collapsible spacer.
   
9. Install propeller shaft with reference marks aligned.
   
10. Install half shafts.
    

check your rear diff vent if pluged clean it out and clean up the pinion seal.sometimes if the leak is caused by pluged vent and has not been leaking long once vent is clean sometimes the leak will stop.there is not a specific torque amount because it is rotational torque(how hard to turn pinion).there is a crush sleve on the pinion and if torqued too tight or too loose brg preload will be wrong and brg damage could result.mark and remove drive shaft.remove rear wheels,brakes,axles.so when turning pinion you dont have any drag from brakes or axles.mark the position of the yoke on the pinion.remove yoke,replace seal,reinstall yoke be sure to replace pinion nut.tighten nut until it takes the exact same amount of force to turn pinion as before taking original pinion nut off.hope this helps.