Ford F-150 (2009-2014) :: Rear Differential Leak From Pinion Seal
Aug 24, 2015
New issue this week - truck developed a leak from the pinion seal. I'm not sure how much has leaked out, so I would like to top it off before limping to the dealership.
From the manual: "Motorcraft SAE 75W-140 Rear Synthetic Axle Lubricant" There is also a footnote for friction modifier required for a Trans-Loc rear diff. Assuming that footnote refers to an LSD and NOT the E-Locker, should be able to top off with just the fluid, correct?
I am a die hard for Truck fan but am really disappointed with the overall quality of the truck. I bought it new and now with 30k, I've had it in twice to have rotors turned, once for transmission getting stuck in 5th and needed a new molded leadframe assembly, and now the pinion leak. All fixed under warranty, however really unacceptable for a truck with this low of miles and an easy life.
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I was looking underneath the truck yesterday and saw that the rear end pinion seal was leaking. Looked like it had been for a while. Truck has 35,850 miles on it. Unscrewed the fill plug and a lot of pressure is released. So I'm assuming the breather is clogged somewhere along the line. I have an appointment at the dealer on Friday to see whats wrong. What is supposed to be at the end of the breather tube? Mine has a barbed 45ish degree fitting on the end of it. Its a SRW by the way.
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I just picked up an 09 F250 a couple of weeks ago and I was planning on replacing all the fluids since I'm not sure when everything had been done in the past, but it did pull a camper 5th wheel. It has about 93000 Km/57000mi on it
One thing I noticed when reading the manual is that a rear diff fluid change is not necessary on these rear axles unless they have been submerged in water or repaired etc..
Just after I got it I noticed the pinion seal was leaking. It was fixed under warranty but the dealer did not replace the diff fluid as they said Ford will not pay for it.
My question is do you think I need to replace the diff fluid or should it still be good, given the relatively low mileage.
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Our 2010 AWD RX350 developed a rear differential oil leak (passenger side) at the drive shaft lip seal. Has 80,000.
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Recently had a rear pinion leak and replaced the seal and nut. I jacked up the truck, took off wheels and felt the drag so I could duplicate once i had the new seal as I tightened the nut. I've done this only once before on my F150 years ago, but when I put the driveshaft back on and test drove it, i had shudder when not under load. So when I let off of the accelerator, it had shudder and more the faster I was going.
Obviously thinking this is a preload issue with the rear axle but would this be caused by tightening too much or too little. I had no issues before so I would think that the driveshaft itself is not the issue. I can't confirm that I got it bolted up in the exact same manner as before in relation to the flanges but still wouldn't think that to be the issue.
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I changed my rear axle grease a couple of weeks ago and now I see some fluid coming out of the pinion seal. Do you think I overfilled it or do I need a new seal?
How hard is it to replace the pinion seal, will I need a new crush washer and will it knock out the preload?
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I do believe my a/c drain is plugged and wetting my passenger side carpet with water. I pulled my floor mat the other day to vacuum and noticed the carpet was wet underneath the weather tech floor mat. No water on top of the mat. It must be leaking down inside of firewall and under the mat.
My guess is I need to find the drain hose and un-plug it with weed cutter line or re-route the tube. I leave for a work trip tomorrow and don't have time to take it to the stealer. I have to run A/C the whole time so I know it will get wet again. I have today and tomorrow to figure it out.
PS - no rain here for months so I know it isn't the door seal leak. I have had the a/c on 24/7 all summer.
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2000 Excursion, Limited, 4X4, 6.8L, V10. My right front inner differential seal is leaking. I have researched and found out that I have to remove the pumpkin gear assembly from the front differential to get at the seal.
Do I need any special tools to get the seals seated back into the differential? Any instructions or a list of parts needed?
I went to fordparts.com and entered my vin number but it makes no reference to the parts of the front differential only the rear.
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I have a 2009 f150 platinum and have been told both sides of the story now... that the front differential is sealed and need not be changed, and also that it is unsealed and can be changed. While asking this question I might as well lump in the rear differential as well. Are they both sealed or unsealed and need to be changed???
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I was getting ready to replace the carrier bearing and noticed the rear pinion seal is leaking. Before attempting the replacement myself, I would like some opinions on the noise in the video below. Is this normal? I am confidant I can replace the carrier bearing and pinion seal, but not sure I have the tools for anything else.
YouTube ...
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2014 RX 350 - 8700 miles - Rear Main Seal Leak
Very disappointed that my new RX with only 8700 miles and has never even had an oil change now has a rear main seal leak. The dealership says that the gasket was defective and that there is no other visible damage. The dealership has filed a case with Lexus corporate.
Granted that it will soon be fixed at no cost to me, it's still very disappointing that a brand I hold so high for quality has let me down in such a big way.
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Had oil seal failure on the rear differential at 35,000 miles?
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2014 RX 350 - 10,300 miles - Rear Main Seal Leak #2
Brought car into the dealership to repair my rear main for a second time. Looks like every 5,000 miles the leak shows up.
The dealership has repaired the rear main seal a second time, and guess what?
Two days later at the dealership the car started leaking oil again.
So now it's been identified that the entire short block needs to be replaced. Should take another week to repair.
This has been the worst experience I've ever had with a new car. Now I have a relatively new car (10,300 miles) that has had 2 rear main seals repaired, a short block replaced, replaced front parking sensors, and a radio that displays the wrong time when first starting the car.
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My 2014 F150 has been in 5 times now for a leak issue and I'm tired of it. I get a water leak in the passenger rear corner of the headliner that makes a big wet stain in the headliner. It rained all day yesterday and now the drivers side rear is wet. The dealer has resealed the rake light, changed to an "upgraded" gasket, sealed again, sealed the top roof trim, sent the truck out to have the rear window removed and resealed...and its still leaking...if anything worse now.
The gasket Ford uses is clearly not the right answer as it's sub par, and Id rather not use silicon as I've heard it can damage paint and even the metal eventually. Is there a permanent fix for this? I'll do it myself so it just gets fixed right...5 times at the dealer is enough! I'd buy a light like a Recon or something if I knew it would fix this leak issue for good. Wondering what others have done. This is a brand new truck with under 10,000 miles on it and I've been fighting this crap since I had 500 miles on it. It's literally unbelievable!
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we've had a bunch of snow this week and I've been driving around with my hubs locked in. today I noticed when I was slowing down to pull into my driveway I could hear a slight squeaking sound(sounded like a squeaky belt) coming from the front.
I verified it was coming from underneath the truck behind the engine compartment so I unlocked the hubs and went for a drive, the sound was gone. I crawled underneath and turned the front driveshaft by hand and I could hear a slight rubbing sound at the back of the pinion. The bearing doesn't have any play in and there are no leaks. What is going on? Could the bearing be starting to fail or could the rubber seal around the pinion have some grit in it causing the noise?
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The rear differential center section on my wife's 02 Explorer has a slow drip that appears to be coming from the rear cover plate. I have worked on the solid 8.8 and 10.25 axles but never on a independent center section. Does the whole center section have to be lowered to change the seal on the cover? If so, do the axles have to be pulled to do so?
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Pinion seal on my truck is leaking. At auto parts store they gave me National seal part number 4278. It does not fit it is too small.I went back and other seal they have is too big. What is the part number?
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I am getting a little frustrated with a leak on my rear differential. The leak is on the front of differential rear-end just behind the four bolts you take off to remove the driveshaft. When you take the driveshaft out, there is a single bolt and the seal behind that is leaking. Here is my dilemma, I called my local ford dealership to find out what the torque rating on that bolt is so when I replace the seal I don't over-tighten. He told me there is no torque rating on it because I have to tighten, measure, tighten, measure the bolt. I was lost, I didn't have a clue what he was talking about.
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Just a quick question about the locking differential. I'm just wondering can you activate the locking diff while turning or on the gas pedal? Because today when I was climbing up an icy hill, I thought I'd turn on the locking diff,I was still on the gas when I pulled the switch. For a second I saw a warning on my dashboard, but quickly went away before I had a chance to read it. Just wondering in what conditions you can lock the diff. I also hear that you couldn't activate it while turning at a certain degree?
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I just had trans rebuilt in my 98 4x4 4.0 ranger I thought while they had the trans out go ahead and replace rear seal. Got the truck back leaking bad carried it back they claim to have replaced it twice while they had it and guaranteed it was not leaking they say the leak is from the oil pan so I'm gonna pull the motor this week. Question is: can make an offset rear seal I still believe this is the problem. Which oil pan gasket to use.
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This is a photo of my '79 F250 4x4 rear axle (Dana 60 full floater) this seal will leak in a few miles ..what I need is the part number of a replacement seal made like the one in the lower photo ..it seems that Ford no longer has this seal.
Notice the increased distance from the bearing to the sealing lip in this photo ..the sealing lip on the new seal in the upper photo lies almost on the bearing, this one just barely engages the seal surface on the axle stub. I can machine the bearing pocket deeper to cause the seal to move farther onto the sealing surface, but that would also cause the bearings to be closer together, and may cause problems there.
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