Transfer Case Gasket Leak?

[14RamHemiSport]

I could very well be wrong as to which one, I still get twisted around and confused when I'm under there, don't like being upside down! LOL

But yes, that's about all there is to it. I would get the proper installation tool, they are less than $20, J45756 for your BW4485 (NR3).

Make sure the driveshaft goes back on to the exact same threads it came off of up front and in the rear, make some witness marks on either side before pulling.

I'm starting to get some weeping in a couple of places, TC, Rear Axle, etc. Not enough to worry about yet and in fact, we just changed the fluids down there and left those seals alone for now.

thank you for all that info. these gm trucks are new to me. for some reason, there isnt a lot of stuff on these 6.2 awd setups. plenty on 4wd yrucks. esp on youtube. for my ram there is basically a how to for every repair. if the rain stops im going to give it a better look over tonight. clean it up. ill probably pump her full of fluid just to make sure there is enough in there until i replace that seal.
i have read plenty about marking the drive shaft connector. i need to touch up some of the exterior paint, so that paint pen will work great.
thanks again for your help.

 

[14RamHemiSport]

Yep, that's looks like the front output shaft seal, the old design. Mine weeps a little less, need some of those clamps that go around the boot, a seal driver, seal puller, new fluid and the seal. I think you have the early style, the new one protects it more from water and debris, a little shield if I remember right.

you were right. i had it backwards. got under the truck last night. it is def the front output shaft seal. i checked fluid level and some ran out of fill hole (was parked on a slight incline). so there is fluid in the tc. i cleaned it off and will keep my eye on it.

i also noticed the seal (i assume its a seal) on the drivers side axle where it comes out of the front diff is leaking too. common for these seals to go under 90k miles?

 

[wjburken]

you were right. i had it backwards. got under the truck last night. it is def the front output shaft seal. i checked fluid level and some ran out of fill hole (was parked on a slight incline). so there is fluid in the tc. i cleaned it off and will keep my eye on it.
View attachment 232192
i also noticed the seal (i assume its a seal) on the drivers side axle where it comes out of the front diff is leaking too. common for these seals to go under 90k miles?
View attachment 232193

The output seals leaking in the front differential is common. Seals are funny in that their life is a function of time and miles. Doesn’t surprise me that you would have this on your ‘09.

 

[14RamHemiSport]

The output seals leaking in the front differential is common. Seals are funny in that their life is a function of time and miles. Doesn’t surprise me that you would have this on your ‘09.

ok good. do you think it is the seal in the diff or the axle leaking (resulting in axle replacement)?? dony notice any issues with the axle (sounds etc)

 

[wjburken]

ok good. do you think it is the seal in the diff or the axle leaking (resulting in axle replacement)?? dony notice any issues with the axle (sounds etc)

Looking at your picture, I believe it is your differential output seal. When I have had issues with the CV shaft/axle has been the CV joint near the wheel fails more often as it sees more flex. I have had more than one develop a split in the boot and sling grease all over.

It doesn't look like your leaking too bad so you could just keep an eye on the fluid level and get it taken care of further down the road.

If you have it serviced, I would consider having both output seals and the pinion seal replaced while it is out of the vehicle. I would also take a look at your differential mounts as they can be a failure point and it is easier to deal with all of this at once.

One thing to keep in mind is if you decide you want to change our the fluid in the front differential, make sure you can open the fill plug before you pull the drain plug. They can be a bear to get out and I would hate to have you drain the case and have no easy way to put fluid back in.

 

[14RamHemiSport]

Looking at your picture, I believe it is your differential output seal. When I have had issues with the CV shaft/axle has been the CV joint near the wheel fails more often as it sees more flex. I have had more than one develop a split in the boot and sling grease all over.

It doesn't look like your leaking too bad so you could just keep an eye on the fluid level and get it taken care of further down the road.

If you have it serviced, I would consider having both output seals and the pinion seal replaced while it is out of the vehicle. I would also take a look at your differential mounts as they can be a failure point and it is easier to deal with all of this at once.

One thing to keep in mind is if you decide you want to change our the fluid in the front differential, make sure you can open the fill plug before you pull the drain plug. They can be a bear to get out and I would hate to have you drain the case and have no easy way to put fluid back in.

so the diff has to come out to replace these? yes im aware of the whole "check fill plug first" when i got into servicing my ram. such an easy. thing to overlook, but super costly. thanks for all the info!

 

[wjburken]

so the diff has to come out to replace these? yes im aware of the whole "check fill plug first" when i got into servicing my ram. such an easy. thing to overlook, but super costly. thanks for all the info!

I am not sure if it is absolutely necessary to remove to work on the seals, but it would definitely be easier to do on a bench versus overhead in the vehicle. Just know that if you ever need to drop the oil pan, you will need to remove the differential so keep that in mind as you plan out the various things you want to do.

 

[thompsoj22]

I have way to many opinion's and the advice above is spot on, However that differential seal area does not warrant repair based upon the pic. Seals seep/weep and unless they are "leaking" defined by a "scary mess", drips on the driveway and require fluid servicing than id advise dont touch it! you have 90k miles which is relativley low miles, dont get to critical, clean the undercarriage a couple times a year and monitor the areas your concerned with.

 

[02Lightning]

Are you guys getting the front differential mixed up with the output on the transfer case? I just did the pinion seal on my front differential, and it has a u-joint in that spot. Mine is an 08, but I would think they are the same. Mine didn't look as bad as the one posted, and I changed mine.

 

[14RamHemiSport]

Thank you all for all the input. Funny you mention having to drop the oil pan. I believe my gasket is leaking as well. Again, nothing extreme, but its wet up in there. Im taking the yukon to my mechanic to look these issues over tomorrow. Provide me with a quote to fix them. I guess the good thing in them all is that as long as i keep fluid in the TC and front diff (and oil in the motor), i can just monitor this and save up at the same time. When i mentioned the front diff seal first thing my mechanic said was "if they are not leaking then they are bone dry"...more concern that way.