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Unread 11-28-2006, 03:22 PM   #1
rejeep
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1988 YJ Wrangler 
 
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ax15 internal / external slave

If i were to swap over my internal slave to an external what exactly would I need to change.
I already have a bellhousing, fork, throwout bearing.
Is my MC and clucth line ok?
Would all I really need is a external slave?

Any help or advice would be great.

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2012 WK2 SRT8 - 6.4L 470 HP beast
1988 YJ Sahara - 4.2L,AX-15,4:1,D30 w/aussie, 8.8, 4.11, 6"Lift 35"BFG/KMT2
1974 Series 3 109" SW fully restored
1964 CJ5 - V6, currently under full restoration
1949 CJ3a - 6 Volt and stock, staying that way!
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Unread 11-28-2006, 06:50 PM   #2
sentinal02
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Quote:
Originally Posted by rejeep
If i were to swap over my internal slave to an external what exactly would I need to change.
I already have a bellhousing, fork, throwout bearing.
Is my MC and clucth line ok?
Would all I really need is a external slave?

Any help or advice would be great.
I've seen a few writups on the TJ's that say you need to change out the front bearing retainer as well for the AX-15. not sure if it applies to the YJ's and i know it's not an issue on the AX-5. something to look into. also you'll want to just get the whole hydraulic assembly from the dealer since it comes as a one piece unit, prefilled with fluid. there's no bleeder screw on the external slave so trying to adapt old MC to new SC is more headache than its worth. you're probably going to have to do some drilling to the new MC to get it to fit the studs on the firewall. at least i did when i went from 88 to 94. in 91 they changed the spacing for some reason. not too hard to modify, just don't run into the swap thinking it's a bolt and go.
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RIP: '88 YJ 2.5L Ax-5 NP231
Posi-Loked. Herculined. Optima yellow top. 1" Shackle, 2" BDS. Cragar 397's Aussie front.

92 YJ 4.0L Ax-15 231
5" springs, 1" shackle 31's or 35's depending on my mood
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Unread 11-28-2006, 07:10 PM   #3
rejeep
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Thanks... that what I was thinking..
I also have an 88.. and just bought a new internal bearing from the dealer..
so I would basically have to return that one and get the other unit, then have to deal with spacing issues on the MC.
Im really looking for a little bit less of a hassle, i just want to do this quick and get underway again...

My bigges question is why did the internal one fail to begin with?
Hopefully ill get more milage out of the dealer's $200 unit
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2012 WK2 SRT8 - 6.4L 470 HP beast
1988 YJ Sahara - 4.2L,AX-15,4:1,D30 w/aussie, 8.8, 4.11, 6"Lift 35"BFG/KMT2
1974 Series 3 109" SW fully restored
1964 CJ5 - V6, currently under full restoration
1949 CJ3a - 6 Volt and stock, staying that way!
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Unread 11-28-2006, 07:52 PM   #4
lah2420
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The input bearing retainer is different also as stated above. The one you need has a long nose on it where the one you have has a short nose on it over the input shaft. The one piece unit is also highly recommended. It has the master, slave, hose, and is filled and bled.
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Unread 11-28-2006, 07:53 PM   #5
lah2420
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The input bearing retainer is different also as stated above. The one you need has a long nose on it where the one you have has a short nose on it over the input shaft. The one piece unit is also highly recommended. It has the master, slave, hose, and is filled and bled.

What happened? This reply posted twice and then locked my PC up.
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Unread 11-28-2006, 08:02 PM   #6
rejeep
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Thanks again..
so this isnt a quick job..
Im better off at the moment just doing the internal bearing and possibly planning this down the road..
Thanks!
kinda what I wanted to hear..
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2012 WK2 SRT8 - 6.4L 470 HP beast
1988 YJ Sahara - 4.2L,AX-15,4:1,D30 w/aussie, 8.8, 4.11, 6"Lift 35"BFG/KMT2
1974 Series 3 109" SW fully restored
1964 CJ5 - V6, currently under full restoration
1949 CJ3a - 6 Volt and stock, staying that way!
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Unread 11-28-2006, 08:08 PM   #7
Gearhead88
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It's not a big deal to do , I did mine last summer , read up on it here........

http://www.jeeps-offroad.com/tech-ar...onversion.html
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Unread 11-28-2006, 08:16 PM   #8
rejeep
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great link!
its deff something I CAN DO, but juts dont want to rush it..

was the bearing retainer hard to come by?
Is the oil seal easy to replace.. I might do that tomorrow if the dealer has the part.
I think I noticed mine seaping a bit last time the tranny was out.
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2012 WK2 SRT8 - 6.4L 470 HP beast
1988 YJ Sahara - 4.2L,AX-15,4:1,D30 w/aussie, 8.8, 4.11, 6"Lift 35"BFG/KMT2
1974 Series 3 109" SW fully restored
1964 CJ5 - V6, currently under full restoration
1949 CJ3a - 6 Volt and stock, staying that way!
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Unread 11-28-2006, 08:36 PM   #9
Cobra Jeep
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Its not as hard as you think. I did the conversion on mine when I rebuilt it a few months ago. The bellhousing actually came from a nv3550, but its exactly the same as the ax15. You will need the front bearing retainer, I got mine from the same place I got my rebuild kit from. The release arm doesnt matter if its a 4 or 6 cyl, they are the same,mine came from a 4cyl. (I had a dealer look them up to confirm, and they both have the same part number) All the parts I got from ebay used, and pretty cheap. Except for the clutch slave/master combo, got that new at the dealer. Now if the stinkin slave goes out I wont have to pull the trans!!!
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'93 YJ 4.0L, AX-15, NP-231HD/SYE, 8.8in rear, OME 2.5 lift, WJ knuckle/brake conversion, hydroboost. Warn M10000 winch. Hope to some day build a stroker for it.

'79 Cherokee Chief, 401 MPFI fuel injection, T-18/D-20 and hydroboost. Otherwise stock.
Future mods: NV4500, NP205, high pinion D60 front and smooth bottom D60 rear, e-lockers front & rear. SOA with 35X12.50's
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Unread 11-29-2006, 12:22 PM   #10
Tshark299
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The bearing retainer only needs to be changed if you're keeping the transmission that was originally internal slave, correct?
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'87 YJ Laredo - 4.0L, AX-15, NP231, 4.10s: 3.5" BDS, 31" Muds

'95 XJ - Donated drive train to the YJ, Parted out the rest

'51 CJ-3A - Buick 225 V6: Painless Wiring Harness, Warn Overdrive & Hubs, 2" Lift, 31" Muds
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Unread 11-29-2006, 01:19 PM   #11
sentinal02
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Quote:
Originally Posted by Tshark299
The bearing retainer only needs to be changed if you're keeping the transmission that was originally internal slave, correct?
not 100% sure of that but i would think so. one that was setup for an external slave already would have the newer style beaing retainer already installed.
__________________
RIP: '88 YJ 2.5L Ax-5 NP231
Posi-Loked. Herculined. Optima yellow top. 1" Shackle, 2" BDS. Cragar 397's Aussie front.

92 YJ 4.0L Ax-15 231
5" springs, 1" shackle 31's or 35's depending on my mood
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Unread 11-29-2006, 04:27 PM   #12
Cobra Jeep
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1993 YJ Wrangler 
 
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Location: , Alabama
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Yes, if you are keeping your trans that originaly had the internal slave, you will need the new front bearing retainer. If your installing a new trans that is originaly a external slave model, then you dont have to do anything to it.
__________________
'93 YJ 4.0L, AX-15, NP-231HD/SYE, 8.8in rear, OME 2.5 lift, WJ knuckle/brake conversion, hydroboost. Warn M10000 winch. Hope to some day build a stroker for it.

'79 Cherokee Chief, 401 MPFI fuel injection, T-18/D-20 and hydroboost. Otherwise stock.
Future mods: NV4500, NP205, high pinion D60 front and smooth bottom D60 rear, e-lockers front & rear. SOA with 35X12.50's
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