Wallace Krempa Posted September 6, 2019 Share Posted September 6, 2019 (edited) Background. I have always liked older trucks, their simplicity to work on, and the old but gold style of look to them make me smile. I was looking at early 90s ford for awhile, knowing that they were very reliable, but when my brother, a XJ guy, said that jeep made trucks I was intrigued. After a lot of research and about 3 months of joint efforts across 2 different states i was the proud owner of a 1989 Jeep Comanche. About the Truck. I bout the truck in Utah in December of 2018 and after my brother out there did some work on it, because there are more junk yards, it was shipped back home to Eastern Pennsylvania in late January. The truck is lifted 5 inches on 33" with a 4.0 motor. It then goes through a AX15 5spd tranny to a Dana 44 rear axle. On February 15, just 20 days after i got my licenses I drove the truck home to stay. She is my first car and is definitely a project. As she sits right now she has about 20 different XJs and MJs into this single vehicle. THE PROBLEM. As i came home from school today I saw a little bit of oil on my boots, after some searching around i found that the fluid was coming off the plastic and metal shield i installed to protect the fuse box from fluid coming off the clutch. (Thank all of you guys on here for letting me know that it might leak). I looked around in the engine bay and there way no fluid in there. Or on the underside of the truck. So i am very confused and wondering what i should do next? All information is much appreciated and am looking forward to hear back from every. Thanks very much, Wallace https://photos.app.goo.gl/5pM41uysNsC72MEL6 Edited September 6, 2019 by Wallace Krempa putting in photo link Link to comment Share on other sites More sharing options...
DirtyComanche Posted September 6, 2019 Share Posted September 6, 2019 It's probably not oil, it's probably brake (clutch) fluid. It's leaking from the clutch master cylinder out of the pushrod (which runs through the firewall) and dripping on the inside of the firewall. You need a new master cylinder, assuming this is where your leak is from, and you need to do it ASAP. You also might want to do the clutch slave and line at the same time, depending if it's an internal or external slave type. Link to comment Share on other sites More sharing options...
eaglescout526 Posted September 6, 2019 Share Posted September 6, 2019 If it’s the original master cylinder and if it’s in good shape on the inside you can rebuild it. But the cylinder can’t be pitted or else the rebuild is nulled with the same leak. Link to comment Share on other sites More sharing options...
JustEmptyEveryPocket Posted September 6, 2019 Share Posted September 6, 2019 If its an internal slave AX-15 I would recommend just doing the clutch master replacement. If you have a 94+ external slave AX-15 I change my recommendation to replacing the master, slave, and line between them with a pre-bled unit. Link to comment Share on other sites More sharing options...
JMO413 Posted September 6, 2019 Share Posted September 6, 2019 2 hours ago, DirtyComanche said: It's probably not oil, it's probably brake (clutch) fluid. It's leaking from the clutch master cylinder out of the pushrod (which runs through the firewall) and dripping on the inside of the firewall. You need a new master cylinder, assuming this is where your leak is from, and you need to do it ASAP. You also might want to do the clutch slave and line at the same time, depending if it's an internal or external slave type. Agreed. Link to comment Share on other sites More sharing options...
Manche757 Posted September 6, 2019 Share Posted September 6, 2019 3 hours ago, Wallace Krempa said: As i came home from school today I saw a little bit of oil on my boots, after some searching around i found that the fluid was coming off the plastic and metal shield i installed to protect the fuse box from fluid coming off the clutch. Do you have a pic of the shield you made and installed? Smart Link to comment Share on other sites More sharing options...
Wallace Krempa Posted September 6, 2019 Author Share Posted September 6, 2019 Not the best picture but you are able to see the yellow painted metal above the fuse box. Link to comment Share on other sites More sharing options...
Wallace Krempa Posted September 6, 2019 Author Share Posted September 6, 2019 3 hours ago, DirtyComanche said: It's probably not oil, it's probably brake (clutch) fluid. It's leaking from the clutch master cylinder out of the pushrod (which runs through the firewall) and dripping on the inside of the firewall. You need a new master cylinder, assuming this is where your leak is from, and you need to do it ASAP. You also might want to do the clutch slave and line at the same time, depending if it's an internal or external slave type. Another question, about a week ago a brake line blew. I replaced it bleed it, and it working fine. But when I refilled the brake fluid reservoir I overfilled it a little bit. Do you think that would have anything to do with the leakage at the clutch? Link to comment Share on other sites More sharing options...
JustEmptyEveryPocket Posted September 7, 2019 Share Posted September 7, 2019 40 minutes ago, Wallace Krempa said: Another question, about a week ago a brake line blew. I replaced it bleed it, and it working fine. But when I refilled the brake fluid reservoir I overfilled it a little bit. Do you think that would have anything to do with the leakage at the clutch? No. Two separate systems. Link to comment Share on other sites More sharing options...
DirtyComanche Posted September 7, 2019 Share Posted September 7, 2019 4 hours ago, Wallace Krempa said: Another question, about a week ago a brake line blew. I replaced it bleed it, and it working fine. But when I refilled the brake fluid reservoir I overfilled it a little bit. Do you think that would have anything to do with the leakage at the clutch? The brake reservoir is sealed, so if you overfill it you'll just have it puke out as you put the lid on. Once the lid is on it won't leak out unless something is broken. Even then it won't leak from the master through the firewall, it can wind up in the brake booster, but it won't make it any farther than that. Link to comment Share on other sites More sharing options...
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