Having the flexibility to shift on the fly from two to four wheel drive without having to get out and lock the wheel hubs is a luxury that most of us take for granted, especially during a snowstorm.
Many of today's vehicles are equipped with part time four wheel drive systems, which will engage either manually when the driver selects a switch or automatically when the on board computer senses that wheel traction is reduced by weather or road conditions.
The physical part of the vehicle that activates this action is the transfer case, which has an output shaft that delivers power to the drive axle. From time to time, the seals that connect these components together can dry up, wear out, or break. If this occurs, they will have to be replaced by a certified mechanic sooner rather than later to avoid further damages to the vehicle's drive system. The transfer case output shaft seal is located on the transfer case of four-wheel drive cars, trucks, and SUVs.
The transfer case completes the activation between two-wheel drive neutral, to low four-wheel, and then to drive four-wheel. Inside the case are a series of gear reductions and chain drives that work together to accomplish their task of supplying power to the drive axles, making the vehicle four wheel drive. The transfer case output shaft is the part that connects the case to the axle.
The purpose of the transfer case output seal is to prevent fluid from leaking out of transmission, where the transfer case is connected by way of the transmission's input shaft. The seal also helps to keep fluid from leaking out of the front and rear output shaft to the differentials, which keeps all metal components properly lubricated for extended use.
If the seals leak, fluid escapes and is no longer able to properly lubricate the interior components of the transfer case. Eventually the parts inside will wear out and overheat. If this happens, the transfer case will be rendered useless and the four-wheel drive operation will not work. Over time the transfer case output shaft seal can fail, and when it does, will display a few symptoms that will alert the driver that a problem with this system exists.
Noted below are a few of the common side effects of a damaged transfer case output shaft seal that should be replaced.
The seal that keeps fluid inside the transfer case and thus the transmission is vital for the smooth operation of the vehicle's transmission.
When fluid is leaking from a broken seal, it reduces the volume of fluid that is currently working inside the transmission. A loss in fluid pressure also occurs, which will make shifting gears more difficult for an automatic or manually shifted transmission.
If you notice that your transmission is having difficulty shifting to higher or lower gears, you should contact a certified mechanic as soon as possible to inspect this problem and offer a solution. When the output shaft seal breaks or wears out, it also can cause noises to appear from under the vehicle. In many cases, these noises are caused by the reduction of lubricants inside the transfer case or metal-to-metal grinding.
It's pretty obvious to most vehicle owners that metal grinding together is never a good thing, so if you hear noises coming from the area where your transmission is locatedcontact a mechanic as soon as possible. In some cases the loss of fluid will cause the vehicle to jump in and out of four wheel drive, when it is supposed to stay in this operation.
This is commonly caused by broken parts inside the transfer case that control this operation. The parts become worn out prematurely due to the leaking fluid caused in many cases by the output shaft seal. When the seal leaks, you will notice reddish looking fluid on the ground under your vehicle. This is transmission fluid and an instant sign that a seal or gasket on your transmission case is broken and needs to be fixed. Anytime you recognize these warning signs, it's important for you to contact a professional mechanic so they can replace the transfer case output shaft seal as soon as possible.
The most popular service booked by readers of this article is Vehicle Drivetrain Inspection. Our certified mobile mechanics make house calls in over 2, U. Fast, free online quotes for your car repair. Schedule Vehicle Drivetrain Inspection. Service Area. Average rating fromcustomers who received a Vehicle Drivetrain Inspection.By blackbomberDecember 11, in Engine.
Hey guys,its the blackbomber here. Just keep in mind that stop leak stuff can plug up things you don't want plugged up, like if you use it to plug a leak in the radiator, it will fix the leak, and it can plug the radiator up also. I once used a stop leak in my engine, it fixed the small seal leak temporarily, but when it started leaking again, it was like a dam broke. I had leaks on my transfer case. The top inlet and rear outlet.
It was the synthetic oil I believe. New seals and good to go. Power wash the engine and watch for where it's coming out. Front timing cover seal is easy and cheap as is the valve cover.
How Can I Seal a Transmission Leak?
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Engine Search In. Recommended Posts. Report post. Posted December 11, Share this post Link to post. Guest Rick-rat. By all meansdo NOT try your Grandfather's recipe of egg whites and oatmeal! NOT try your Grandfather's recipe of egg whites?????? I have seen that goop clog up an oil pump or heads more than once. Join the conversation You can post now and register later.Forums New posts Search forums.
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Now, I just towed a full 6x12 U-haul trailer miles on the interstate yesterday, and then towed it back empty today.
Don't know if the problem is related or due to the towing, or the mileage K on the truck, or both, or neither or something else. I guess I'm hoping it's like a gasket or something. Didn't seem to have any performance issues while towing, or after towing. What's the best way to figure this leak out?
I think it might be the transfer case output shaft seal -- front. The transfer case is wet on the front, and not any on the back, so it's not the fill or drain plugs. And it's wet a bunch all over the front, so it's not like there's a main gasket leak where the two halves come together. And it is wet where the shaft comes out of the transfer case. Questions: Am I dead in the water until I get this fixed?
Does the troubleshooting sound likely? Anything else it might be? Anyone out there replaced this shaft seal? Does it really require the "special tools" the manuals suggest?
May as well replace the LCA brackets if I want new bushings anyway while I'm at it since it looks like those come off in the procedure? Here's a video I found for the rear output seal on an older GM truck. This helps the visualization. I would keep a check on the fluid, if it is losing fluid slowly then you have more time to fix it. If it is losing fluid quickly then you have less time. Make sure to use the AutoTrakII fluid.
Now that I have the seal off, the fluid that came out of the transfer case and I'm going to have to refill it now is like blue-green. Not pinkish. So, that's my concern, that I am replacing this seal, since I have it off, but it may not be the problem.Got car issues? Well, we've got the answers! Easily search thousands of entries to find exactly what you're looking for. Need advice on a dealing with a blown head gasket?
Oil Leak? Cracked block or leaking radiator? Be sure to leave a comment or question on anything that may interest you. You can also send an email to our pro for direct assistance! A differential leak is not an uncommon leak on many vehicles equipped with a differential. But how do you know if your vehicle has a differential? The differential in your vehicle accomplishes a variety of tasks all in a small space.
The main purpose of the differential in your vehicle is to multiply the power transmission devices. Your vehicle has just one engine but must drive 2 or 4 wheels with that engine.
Most four-wheel drive vehicles have a front and rear differential. For vehicles that are front wheel drive, the multiplication happens inside the transmission, which can technically be called a transaxle. A transaxle takes one input from the engine and turns it into 2 outputs, one to each of your front wheels.
In the case of a 2-wheel drive vehicle that is rear wheel drive, power exits the transmission through the driveshaft and the driveshaft provides a single input into a differential.
Inside the differential that single power input is split into two shafts, the axles, to supply power to both rear wheels. The differential in your vehicle also provides another important drivetrain feature and that is providing the final drive ratio. Even with the gear reduction in your transmission, the driveshafts in your vehicle are spinning very quickly so you need one final gear reduction to reduce the speed. This requires a ring gear, pinion gear, spider gears and carriers to support them.
This set of gears requires specific types of lubricants to make sure things stay cool during normal operation and that wear is kept to a minimum. Along with the gear set, very specific bearings are used to carry the loads on the shaft and keep the gears at exact distances from each other so the gear teeth can engage properly.
How Can I Seal a Transmission Leak?
Like any lubrication, there are seals to keep the lubricants from running out of your differential.Forum Rules. Now through Dec 31st, Recent Threads Anyone else stuck at home? License plate bracket recommendations. Plz help What do you use to mount a flag to your jeep? Info on Liberty lift T to T upgrade Putting the transmission dipstick tube in 95 grand cherokee Happy Holidays Help - CJ 4 cylinder transmission issue steering issue. Reader Rides.
Page 1 of 2 1 2 Jump to page:. Thread: Transfer case leakin while Jeep is in motion. Join Date Oct Posts 3. Transfer case leakin while Jeep is in motion My transfer case was leaking so I had front output shaft seal, rear output seal, input seal replaced. No leak while the jeep was parked but when I drove it the t-case fluid was flying everywhere under the jeep and collecting in the pan. Any advice on where it could be coming from? Thanks in advance. Join Date Feb Location texas Posts 5, Re: Transfer case leakin while Jeep is in motion not from me.
Re: Transfer case leakin while Jeep is in motion Likely the transmission rear output seal if it hasn't been replaced. That would explain leaking when the transmission is pumping fluid. The transfer case input fits into the transmission output seal and creates the seal. Re: Transfer case leakin while Jeep is in motion im having the same problem. Re: Transfer case leakin while Jeep is in motion Thanks guys, I'll check those out Let you know what it is when I find out.
Re: Transfer case leakin while Jeep is in motion Still could be the output shaft seals, and have the driveshafts slinging the fluid. Any way you could put it on jackstands and see if you can tell where it's coming from sitting still? Re: Transfer case leakin while Jeep is in motion Okay, so the problem was that when the seal was replaced the first time, the "bed" that it sits in was not completely clean and the first guy used too much sealant.
Second time around the seal was correctly in place. No leak. Re: Transfer case leakin while Jeep is in motion. Originally Posted by Mud Chuck. Okay, so the problem was that when the seal was replaced the first time, the "bed" that it sits in was not completely clean and the first guy used too much sealant.
Re: Transfer case leakin while Jeep is in motion I had a leak coming from the speedo gear housing; the O-Ring on the speedo had broken, and it spilled from there But in my case the leak came from the rear of the TC.What happen if the transfer case run out of oil? I never use the 4 wd Will the transfer case affecet the transmission? If the transfer case is bad would the truck continue to run? I also have a transmission oil leak from a seal, Please Help I am a single mother raising 6 little kids by myself with no husband is very hard!
I have a Dodge Durango 5. I can put oil in the trasfer case because i dont know you must go underneat to put oil to the trasnfer case. I can NOT put oil in the trasfer case because i dont know you must go underneat to put oil to the trasnfer case.
Think if it this way, if you can't afford to fix the leak, you most certain can't afford to replace the transfer case. You will have to fix the leak, pure and simple. It might just be the yoke seals where the front and rear drive shafts go into the transfer case. You would need to take it to a shop. It doesn't hold much oil but you need to keep it full.
It is cheaper to repair the leak than ruining the transfer case. Replacing it cost big bucks. Your kids deserve a good 4 WD especially during winter. Get it done soonest. Do not go to a dealership as they charge high.
Start with your neighborhood mechanic, ask a quote first. It is a small piece of work so you should not expect to spend much. How do your check the trans case for fluids, or is this done when I take her in for an oil change.How to fix an oil leak between the transmission and transfer case, Dodge Ram part 1
I see they checked the tranny fluid. Reason I ask, I have a Dodge Journey, who has been howling for about 6 months now thought it was the new tires. I check my oil and my trans between check upsGain extra benefits by becoming a Supporting Member Click here find out how! Send Private Topic View Profile. Attachment: Tcase. Execution time: 0. All times are GMT Pacific. Current time is PM Top.
Attach Photos to Posts. Contact Us. My Cookies. Frequently Asked Questions. Forum Rules. What I am wondering is if i run it like this for the winter as i have no place to get in to work on it ,will it cause any damage to anything running it like this i have no idea how long it has been like this. A way for the transmission to dump in the tcase silverado 4x4 custom 6"lift 33s with a stock 5. The culprit is the transfer case input shaft seal.
It's a dual lip style seal that keeps the fluids from transferring. There is no real harm from the fluids transferring as they are the same. In 2wd, the Tcase would not likely have an issue with being overfull, but in 4wd it could cause the fluid to aerate.
The main issue if you have to leave it is to keep a close eye on the transmission level and make sure it does not get low. Make sure the transfer case breather is clear so it can spit out any excess fluid that's how I realized mine was overfull.
Just monitor it. Check trans level, and drain t-case every so often. That'll let you know the leak rate, the amount drained is the amount the tranny is low. The transfer case adapter is easy to make if you can weld. It makes the job much easier. You remove those four bolts around the input shaft and the seal comes off with that retainer assembly.
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