JonnyTahoe
Full Access Member
if you need another case I have one.
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Rear Main Oil Seal
- Thread starter Larryjb
- Start date
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if you need another case I have one.
The NP246 takes AutoTrak II fluid, which is blue (when new...).
I may be stumped by the silliest problem, the transmission filter seal.
I've done filter changes on my 99 Lesabre, and never had a problem getting the seal out. This one, I'm stuck.
Ideas?
EDIT: No sooner do I ask for help, it comes.
I've done filter changes on my 99 Lesabre, and never had a problem getting the seal out. This one, I'm stuck.
Ideas?
EDIT: No sooner do I ask for help, it comes.
Last edited:
Thanks Wade,
I saw that and had been trying to use my picks. Surprisingly, the pick left a slight indentation on the aluminum so I held back on that. Later I got a small screwdriver and wedged it in the indentation I had made and tapped towards the center and got it.
I saw that and had been trying to use my picks. Surprisingly, the pick left a slight indentation on the aluminum so I held back on that. Later I got a small screwdriver and wedged it in the indentation I had made and tapped towards the center and got it.
I hate those little seals, they’re a PIA to remove.
There is a trick out there that involves a piece of threaded pipe with an elbow. Screw it in, give it a wack, and it's out. I didn't have any piper at home.
JonnyTahoe
Full Access Member
.
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JonnyTahoe
Full Access Member
If you check the T-Case fluid and you used AutoTrak (blue) and you notice its over-filled and Red like mine was you may have a internal Trans seal failure. Mine was 2 quarts over (1 GAL) and it didn't leak a drop.
Thanks John,
This is another reason I believe my case has been opened before. I have over 300000km (about 190000 miles). This case probably should have sprung a leak already.
Shipping would be extraordinarily expensive to get into Canada. Thanks for the offer though!
Well, the last bolt in, the last drop in.
I always have severe anxiety when starting the a vehicle for the first time after major surgery. Even when my dad worked on cars, when it came time to turn the engine over, I'd stand there as a 10 year old kid waiting for the whole thing to explode. Never did.
I turned the key over, had my wife looking for any fluids coming shooting out from underneath. Dry.
It still needs a little more transmission fluid, it's just under the full hot after a nice long drive. I did near some very slight knocking coming from the transmission pan area. I'm not sure if it was there before or not. I only hear it when standing beside the truck. It shifts fine.
All that work for "it works normally." But with all I saved doing this job on my own, think of all the beer I can afford now.
And my wife gets her truck back.
I always have severe anxiety when starting the a vehicle for the first time after major surgery. Even when my dad worked on cars, when it came time to turn the engine over, I'd stand there as a 10 year old kid waiting for the whole thing to explode. Never did.
I turned the key over, had my wife looking for any fluids coming shooting out from underneath. Dry.
It still needs a little more transmission fluid, it's just under the full hot after a nice long drive. I did near some very slight knocking coming from the transmission pan area. I'm not sure if it was there before or not. I only hear it when standing beside the truck. It shifts fine.
All that work for "it works normally." But with all I saved doing this job on my own, think of all the beer I can afford now.
And my wife gets her truck back.
Detailed outline of the procedure here:
https://www.tahoeyukonforum.com/threads/rear-main-oil-seal-replacement.119245/
https://www.tahoeyukonforum.com/threads/rear-main-oil-seal-replacement.119245/
And your 4x2 is exactly what I have thinking of getting from TX or GA or similar. No rust. No 4wd system. I live in snow belt but hardly ever put my yukon in 4wd anyway.
Just like Scotty Kilmer says: if u don't NEED it don't spend $ on it.
JonnyTahoe
Full Access Member
The RWD Trucks are lighter, handle better and are easier to work on.
JonnyTahoe
Full Access Member
Miles on the t-case not always the reason for the housing to have premature leaks. Mine has 295k and never leaked. I think shifting from 2-Hi into 4-hi a lot must have something to do with the leaks. I seldom used 4-Hi and never 4-Lo.
JonnyTahoe
Full Access Member
I have been using 1/4''plywood under the truck in the driveway so I don't have oil spots all over works great. That's a lot of work to stop a oil leak. Great Job.Well, the last bolt in, the last drop in.
I always have severe anxiety when starting the a vehicle for the first time after major surgery. Even when my dad worked on cars, when it came time to turn the engine over, I'd stand there as a 10 year old kid waiting for the whole thing to explode. Never did.
I turned the key over, had my wife looking for any fluids coming shooting out from underneath. Dry.
It still needs a little more transmission fluid, it's just under the full hot after a nice long drive. I did near some very slight knocking coming from the transmission pan area. I'm not sure if it was there before or not. I only hear it when standing beside the truck. It shifts fine.
All that work for "it works normally." But with all I saved doing this job on my own, think of all the beer I can afford now.
And my wife gets her truck back.
This works as long as you are not parking on a city street or in a strata. Fortunatelly, this job was just a lot of work and not too expensive. It definitely helps to have an extra helper, but I managed to do the entire job myself.
Now that I've done it once, would I do it again? As I am forgetting how much cursing I did during the job I might just take it on again. Actually, I probably did more cursing when trying to lift the transfer case back into place.
Yeah there’s just no easy way that I found to get the transfer case in. Can’t use a trans jack so I ended up lifting the rear up onto the crossmember and then repositioning my hands so I could rotate it and move it forward onto the trans. It’s just awkward and heavy. I have done this 3 times now and it doesn’t really get easier.
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