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REAR PINION SEAL IS LEAKING - Grand Marquis Mercury Cars & Trucks

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What is your question? Replace the seal.

Posted on Sep 10, 2009

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1 Answer

Differential gasket


Rear cover gasket is easy. Unbolt, drain, clean and replace gasket; fill with proper gear oil. Pinion seal on the front of the differential, different matter. If its the pinion seal leaking, take it to a shop with experienced techs.

Aug 11, 2012 | 1995 Jeep Grand Cherokee

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Rear differential seal


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.

Apr 07, 2012 | 2006 Ford Expedition

1 Answer

1995 honda passport rearend singing


side carrier bearings in side rear end that is do to leak of rear end oil due to bearing small leaking from pinion seal, ps check (side to side bearings , will not make sing at low speeds only high way speeds above 55 or more,

Nov 18, 2011 | 1995 Honda Passport

1 Answer

I have a 2004 ford explorer xlt 4x4 4.0l engine. It seems that that the 2 axles for the rear end are leaking on to the rear differential. I was wondering if that means that the rear pinion seal has to be...


the pinion seal only needs to be done if its leaking, or you think you should while its there getting the other seals, not a bad idea. its a job, so make sure they are experienced with your model. get a few estimates. Use good quality parts (dealer)

Sep 14, 2011 | Ford Explorer Cars & Trucks

1 Answer

My rear diff housing is leaking quite badly. is it possible the pinion seal is the problem


yes it is very possible. to confirm where your leak is, look in 4 places. 1) rear diff cover..... 2)pinion seal, where your driveshaft goes into the rear end, or axle seals, just look and see if there is any fluid on the inside of your tires.

Apr 14, 2011 | 1996 Toyota Land Cruiser

1 Answer

I went to have my rear u joints done and the guy bent the pinion ...I couldn't get him to fix the problem and he refused to finish repairing the truck...I need a quick fix for leaking rear...


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.

Apr 08, 2011 | Chevrolet Silverado 1500 Cars & Trucks

1 Answer

I have Dodge1500 2005 the rear pinion seal is leaking how can I replace it myself


remove the driveshaft, clean the nut holding the driveshaft coupler to rear end pinion shaft, mark it,now loosen the nut counting the turns so you can put nut back to exact amount of turns, then use a chisel and hammer to remove old seal, clean area good and install new seal and check oil when done, hope this helps.heres a diagram.51c4c07.gif

Feb 05, 2010 | 2005 Dodge Ram 1500

1 Answer

Replace left rear axle seal 1999 ford explorer


Axle Shaft Removal
  1. Raise and support the vehicle. For additional information, refer to Section 100-02 .
  1. Remove the wheel and tire assembly. For additional information, refer to Section 204-04 .
  1. Remove the differential housing cover (4033).
    1. Loosen the bolts and drain the lubricant from the rear axle housing (4010).
    1. Remove the bolts.
    1. Remove the differential housing cover.
Remove the rear brake disc (2C026). For additional information, refer to Section 206-04 .
  1. sxn~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Turning the differential case (4204) or an axle shaft (4234) with the differential pinion shaft (4211) removed will cause the differential pinion gears (4215) to fall out of the assembly and damage the components.
    Remove the differential pinion shaft.
    1. Remove the differential pinion shaft lock bolt.
    1. Remove the differential pinion shaft.
  2. sxn~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Do not damage the rubber O-ring in the U-washer groove.
  3. Remove the U-washer (4N237).
  4. Push the axle shaft inboard.
  5. Remove the U-washer.
Reinstall the differential pinion shaft.
  1. Install the differential pinion shaft.
  2. Install the differential pinion shaft lock bolt finger-tight.
  3. sxn~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Do not damage the wheel bearing oil seal (1177).
    Remove the axle shaft.
-----------------------------------------------------------------------------------------------------------------
Seal Removal
  1. Remove the axle shaft (4334). For additional information, refer to Axle Shaft in this section.
  1. sxn~us~en~file=ani_caut.gif~gen~ref.gif CAUTION: Never remove the wheel bearing oil seal (1177) by itself. Always remove the rear wheel bearing (1225) and the inner wheel bearing oil seal at the same time.
    NOTE: If the wheel bearing oil seal is leaking, the axle housing vent may be plugged with foreign material.
    Using the special tools, remove the rear wheel bearing and wheel bearing oil seal together.
6c7eb46.gif Installation
  1. Lubricate the new rear wheel bearing.
    • For 4.0L SOHC and 4.0L EI with limited slip rear axles and 5.0L vehicles, use SAE 75W-140 High Performance Rear Axle Lubricant F1TZ-19580-B or equivalent meeting Ford specification WSL-M2C192-A.
    • For 4.0L SOHC and 4.0L EI with conventional rear axles, use SAE 80W-90 Premium Rear Axle Lubricant XY-80W90-QL or equivalent meeting Ford specification WSP-M2C197-A.
  1. Using the special tools, install the rear wheel bearing.

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  1. Lubricate the lip of the new wheel bearing oil seal.
    • Use Premium Long-Life Grease XG-1-C or equivalent meeting Ford specification ESA-M1C75-B.
  1. Using the special tools, install the wheel bearing oil seal.
c21e27d.gif
  1. Install the axle shaft. For additional information, refer to Axle Shaft in this section.

Feb 22, 2009 | 1999 Isuzu Rodeo

1 Answer

Pinion seal leaking


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.

Oct 22, 2008 | 2004 Ford F250

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