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I've just purchased my MJ a few days ago. I'm trying to figure out what transmission I have. My Comanche is an 88 and I've read that 88 was the year they started phasing out the ba10/5. I would check for the band that the ax15 is supposed to have but the MJ in question is several states away from me at the moment (long story). I know that the transmission in question has an internal slave cylinder (and it is broken). Is any transmission behind an inline 6, with an internal slave cylinder, ipso facto, a ba10/5? or could it be an early version of the ax15? how can I know for sure? Hypothetically, if I have a ba10/5 (which i am informed is trash garbage) just how bad are they? Ive read a lot that they are bad but why? (Id like to hear a horror story) Obviously I wouldn't want to sink money into a rebuild for it if it breaks outright, but right now it just needs a clutch kit with a new slave cylinder. Should I just save my money for a new ax15 instead of fixing this? (assuming its a ba10/5)

Hey guys, I got a problem on my hands with my 1989 MJ 4.0 2WD with the BA10/5 transmission. To start at the first of my problems, my clutch pedal started to feel soggy. I checked the fluid level and it was low, so I topped it off. A week or so later it was soggy again and low so I topped it off again. Doing this over and over I decided to check the master cylinder. It didnt look like it was leaking too bad but it was a little bit, so I changed that out and bled it. After I bled it, it felt great, but then after only driving it around the block it went soggy to zero pressure and then there was fluid leaking between the dust pan and tranny. So I figured it was the slave cylinder all along. I then dropped the transmission and replaced the slave cylinder, while I was in there I replaced the clutch and pressure plate as well. Now with everything back together and after bleeding the clutch I get good pressure, but when I start the engine and try to put it in gear it will not allow me to at all, and the clutch pressure starts to slowly fade away. After shutting the engine off it seems like the clutch pressure gradually builds up again. I then bled it again and then pushed in the clutch while I’m gear and had another person try moving the truck. It will not budge. I can hear the clutch moving a little bit by repeatedly pressing the clutch with the engine off. I tried bleeding it several other times and still the same issue occurs. The tranny shifts perfectly while the engine is off and it has fresh fluid. I am stumped on this one guys... as of this moment I am going to try leaving the reservoir cap off over night while the clutch is pressed all the way down to see if any air in the system can work it’s way out. I would really appreciate any of your guys help as I am trying to get this going as soon as possible. Thanks.

Hey guys I need some help. Was driving down the road came to a red light sitting in 1st gear with the clutch in, it wanted to stall, right when I took off it stalled and the pedal went limp/ had no pressure. Is that a slave cylinder issue? Or what could be wrong? Thanks.