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Discussion Starter · #1 ·
Can\'t change gears!!

/wwwthreads_images/icons/cool.gifHello all,
I got this problem with my 91 Wrangler with AX15 manual transmission/wwwthreads_images/icons/mad.gif, my trany fluid has been changed recently. While sitting in stop and go traffics, I don't always can put into first or second gears/wwwthreads_images/icons/mad.gif. I can put into 3rd gear with no problem then I have no problem putting back into 1st. Also, when I try to parallel parking it does the same thing or it will not get out of either 1st or reverse gears./wwwthreads_images/icons/mad.gif
What could be the problem????

Thanks,

Nycjeep :) /wwwthreads_images/icons/cool.gif/wwwthreads_images/icons/mad.gif/wwwthreads_images/icons/mad.gif
 

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Re: Can\'t change gears!!

It sounds like yours hydro clutch is low on fluid. My original peugot had the same problem, if I pumped the clutch 2-3times it could occasionally go directly to first. My hydo clutch master cyl was leaking and I had to refill it when it would absolutely not go into gear. I didn't want to put a new one in since I was doing my SBC/TH350 swap, problem solved. Would have definitely been cheaper to replace the mstr cyl and possibly the slave cyl though. I think the AX15 has to come completely off to replace the slave cyl, correct me if I'm wrong?

/wwwthreads_images/icons/cool.gif Big Ed
'88 YJ, 4" susp,3" body,33's,283 Chevy V8,TH350,4.11's,D30,D35c
 
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Discussion Starter · #4 ·
Re: Can\'t change gears!!

/wwwthreads_images/icons/smile.gifBig Ed,
Thank for info, but what is hydro clutch and where exactly is this unit?/wwwthreads_images/icons/tongue.gif
V8jeep, thanks for your help also. But the clutch only had about 40k miles on them./wwwthreads_images/icons/smile.gif

Nycjeep :)/wwwthreads_images/icons/tongue.gif/wwwthreads_images/icons/wink.gif/wwwthreads_images/icons/tongue.gif
 
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Discussion Starter · #5 ·
Re: Can\'t change gears!!

i'm betting your problem is the same as mine and many others that've come before on this board - the slave cylinder. if you're ambitious you can do it yourself, but you do need to remove the tranny. the slave is relatively cheap, getting to it is costly. tranny shop will run 8 bills . your clutch is probably fine, but they could check it out while in there. this problem stinks, but it's common with jeeps from what i've read on this board.

by the way, i never coughed up the jing i've just learned how to shift around it - occasionally double clutch, slower shifts, a little extra muscle
 

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Re: Can\'t change gears!!

Not sure if you still need this, but in reply to your reply:

I used "hydro clutch" to describe the Hydraulic Clutch Assembly (HCA). The master cylinder of the HCA is located on the driver side of the firewall under the hood, which holds the DOT 3 fluid. The slave cylinder of the HCA is located in the tranny. The two are joined by a 1/4" thick or so steel line with fittings at each end.

As 89wrangler said, you will have to remove the tranny to replace the slave cylinder (which is probably what's bad, but it could be a bad master cylinder). I did replace a slave cylinder on an 84 JEEP XJ without taking off the tranny, not sure what model the tranny was though. Before I pulled the tranny I would bleed the system and put all new fluid in, if it still didn't shift good, then replace the master cylinder and bleed the entire system again. The master cylinder runs $60 to $90 depending on the tranny. THEN, if you really want it to shift good, pull the tranny and do the whole sha-bang!

/wwwthreads_images/icons/cool.gif Big Ed
'88 YJ, 4" susp,3" body,33's,283 Chevy V8,TH350,4.11's,D30,D35c
 
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