So I've been searching a lot of threads to find an answer for my issue but many are outdated and the photos posted are no longer viewable. I have a 2000 2.5l jeep TJ SE with a leak coming from in between transfer case and transmission (I think). It's very hard to tell since many different parts are wet and I wanted some second input in case other people have delt with this similar problem. I'm in High school and trying to save some money so I plan on replacing the seals myself so any tips/tricks would also be greatly appreciated. I have some photos link below of the leak in between my transfer case and also the leak coming from my front diff which I think is the pinion seal.
Leak coming from transfer case or transmission
- Thread starter New hampshire tj
- Start date
Yes, the front pinion seal is shot. far as the other leak its either ATF from the T case or gear oil from the trans. There is a seal in the rear of the trans and one in front of the T case. There is a little weep hole of sorts between the two you should be able to see it dripping from. The other thought is the valve cover at the rear and its engine oil. You must figure that one out.
Thanks for the response, I think it's probably one of the two seals you mentioned. As for the valve cover gasket isn't the transfer case too far back for leaking oil from the engine to reach it?
I just replaced the trans and t-case seals on my 06 a couple months ago. Get both seals and a new trans mount. I also rebuilt front driveshaft while it was out and installed t-case shifter cable. Top pass side nut was a pain on t-case get a stubby wrench or cut one down. Harbor freight trans jack was worth the $$ didn't want to drop case. Take your time wasn't to bad of a job just a lot of things to remove and get a seal puller. I used a big socket to drive new ones in.
Do you remember what the seals where called/where you got them? I'm having trouble finding the right ones and don't really know what to look up
Trans seal should be rear output shaft seal, T-case should front input shaft seal. I got both of them at the dealership but I work there part-time. Also check the resource page , look up your yr. Will give a look at them
before you spend any money on stuff, I would recommend the following process to truly zero in on the problem (understanding that the pinion seal is shot but replacing that is a more involved process). Trans leaks have a way of disguising themselves and presenting as a different source than what they actually are.
Take the skid off, and with brake clean and paper towels get the trans completely dry. Pay particular attention to all the orafices: dipstick tube, cooler lines, shift selector, neutral safety switch, torque converter solenoid plug etc. Basically everything above the pan gasket. Virtually every trans leak will eventually run down to the pan gasket and make you think that's the problem. But also clean around the mating surfaces and the front/bottom of the bell housing, and the stuff on the transfer case like the speedo assembly, output seal etc.
Once you get it totes dry, jam paper towels in & around each component. You may have to get creative. The idea is to have the paper towel catch the drip before it has a chance to run, so you can isolate the source. If there is a better method than this to track down a trans leak, I wish somebody would post it here. I've had great success with this, and each time it has led me to to something that I didn't suspect (dipstick tube & selector shaft seal). Once you get each area wrapped in paper towels, let it sit for a good while, then come back and investigate.
Take the skid off, and with brake clean and paper towels get the trans completely dry. Pay particular attention to all the orafices: dipstick tube, cooler lines, shift selector, neutral safety switch, torque converter solenoid plug etc. Basically everything above the pan gasket. Virtually every trans leak will eventually run down to the pan gasket and make you think that's the problem. But also clean around the mating surfaces and the front/bottom of the bell housing, and the stuff on the transfer case like the speedo assembly, output seal etc.
Once you get it totes dry, jam paper towels in & around each component. You may have to get creative. The idea is to have the paper towel catch the drip before it has a chance to run, so you can isolate the source. If there is a better method than this to track down a trans leak, I wish somebody would post it here. I've had great success with this, and each time it has led me to to something that I didn't suspect (dipstick tube & selector shaft seal). Once you get each area wrapped in paper towels, let it sit for a good while, then come back and investigate.
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