RUSTYNOGOOD Posted October 1, 2012 Share Posted October 1, 2012 I recently purchased a 88' Comanche Chief 5sp 4.0L 4x4. I found the truck sitting under a shed in backwoods SC. The Truck started right up and runs like a sewing machine. But the Clutch Reservoir was bone dry. I topped it off with fluids and got a pedal. I then drove the truck 45 minutes to my house. Changed the oil, air filter, fuel filter, new battery, cleaned it up a little and greased the suspension. After driving for a couple days, I was having to add fluid here and there. I bled the clutch until I got clean fluid. I thought that I had the problem licked. The clutch felt great. But leaving the driveway, the slave cylinder burst and dropped fluid through the bellhousing. Now, I know that I need a slave cylinder. And that the friggin' tranny has to come out to replace it. But I was told that I need to replace the flywheel with an "extended" flywheel or the new slave cylinder will go out within a couple of weeks. Is this the case?? If so, I should replace the clutch and pressure plate as well right? The clutch felt great until the slave took a dump. I would much rather put that flywheel money on a new clutch and pressure plate. Thanks, I am just looking for second opinions. Link to comment Share on other sites More sharing options...
Jeep Driver Posted October 1, 2012 Share Posted October 1, 2012 Convert to the external slave. Ask how many here have swapped out the internal multiple times. Link to comment Share on other sites More sharing options...
Geonovast Posted October 1, 2012 Share Posted October 1, 2012 Convert to the external slave. Ask how many here have swapped out the internal multiple times. He'd need to do a full AX-15 swap. BA 10/5 was never external. Link to comment Share on other sites More sharing options...
Jeep Driver Posted October 1, 2012 Share Posted October 1, 2012 He'd need to do a full AX-15 swap. BA 10/5 was never external. Good, better yet. Actually I didn't pay attention to that. Link to comment Share on other sites More sharing options...
RUSTYNOGOOD Posted October 1, 2012 Author Share Posted October 1, 2012 So, is there such a thing as an "extended flywheel" that will fix my sorrows? Or should I just put a new clutch, pressure plate and slave cylinder on it and be done with it? Thanks for the advice! Link to comment Share on other sites More sharing options...
Jeep Driver Posted October 1, 2012 Share Posted October 1, 2012 Never heard of it myself. Link to comment Share on other sites More sharing options...
Eagle Posted October 1, 2012 Share Posted October 1, 2012 So, is there such a thing as an "extended flywheel" that will fix my sorrows? Or should I just put a new clutch, pressure plate and slave cylinder on it and be done with it? Thanks for the advice! No, there isn't. Try to buy the new slave from a Jeep dealer rather than a parts chain, if you can. You'll pay more, but there's a chance it'll last longer. Next, my personal suggestion is to NOT use conventional brake fluid. When Jeep was using the internal slaves, they were using a specific hydraulic fluid that was specially formulated for hydraulic clutches. I don't think it's available now, even from a dealer. Some of the parts chains sometimes sell a fluid labeled for clutch, but I don't know if it's the same. I use DOT-5 silicone brake fluid. The clutch in my '88 XJ was replaced (with a new slave) in the autumn of 2000 (I think -- or 1999). It's now 83,000 miles and ten years later, and I've had no problems with it. Link to comment Share on other sites More sharing options...
RUSTYNOGOOD Posted October 1, 2012 Author Share Posted October 1, 2012 Thanks! Sounds like sound advice. I will call the dealer first thing in the morning and get one on the way. Link to comment Share on other sites More sharing options...
87MJTIM Posted October 1, 2012 Share Posted October 1, 2012 my personal suggestion is to NOT use conventional brake fluid. When Jeep was using the internal slaves, they were using a specific hydraulic fluid that was specially formulated for hydraulic clutches. I don't think it's available now, even from a dealer. Some of the parts chains sometimes sell a fluid labeled for clutch, but I don't know if it's the same. I use DOT-5 silicone brake fluid. The clutch in my '88 XJ was replaced (with a new slave) in the autumn of 2000 (I think -- or 1999). It's now 83,000 miles and ten years later, and I've had no problems with it. Can I drain out the old DOT-3 then refill with DOT -5? Do I need to change the master and slave? Can I flush the system? With what? Link to comment Share on other sites More sharing options...
Eagle Posted October 2, 2012 Share Posted October 2, 2012 Can I drain out the old DOT-3 then refill with DOT -5? Do I need to change the master and slave? Can I flush the system? With what? Silicone brake fluid will not mix with DOT-3 or DOT-4 (think oil and water), but there's no chemical reaction. They are "compatible" in that they'll just sit there in the same system without talking to one another. Just use a turkey baster to suck as much of the old stuff out of the master as you can, then fill with silicone and bleed as usual to purge the old stuff out of the lines. If you replace the clutch master, obviously there's no need for the turkey baster. Link to comment Share on other sites More sharing options...
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