External Slave Conversion Problems - JeepForum.com

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post #1 of 25 Old 01-23-2014, 09:09 AM Thread Starter
jesmac13
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External Slave Conversion Problems

Hey, I just finished up converting my 93 YJ (4.0 w/ AX15) to an external slave set-up and I'm having some issues with the clutch not fully engaging after shifting and releasing the clutch pedal. The clutch will disengage (near the bottom of the pedal travel) and will shift into gear fine, but once I start moving everything starts vibrating pretty bad, and gets worse with speed. If I'm moving and push the clutch in, the vibration stops. To me, that means the clutch isn't engaging fully. Any ideas on what to check? Or is something else going on? The clutch and pressure plate are relatively new, and it was working fine before the swap. I bought a new master/slave kit, and a new throw-out bearing. The bearing retainer, clutch fork, and bell housing were bought used. Any help is appreciated.

I did a search only found issues with not being able to get into gear following this swap.

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post #2 of 25 Old 01-23-2014, 11:06 AM
Que89YJ
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Did you tighten the t mount bolts?
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post #3 of 25 Old 01-23-2014, 11:20 AM
Siva283
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What did the bellhousing come off of? Are you sure you used the correct pilot bushing? And lastly are you absolutly positive there is no air in the lines. You symptoms are the same as mine where when my master went and again when my slave went.

1995 YJ. 2 inch BDS Spring lift. 1 inch shackle lift. 1.25 inch JKS Body Lift 33x12.5x15's. Engo 10,000 pound winch.

Quote:
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I gave the Jeep the required offering of $$, sweat, and blood, and everything works fine now. -- Jim
Quote:
Originally Posted by ldso View Post
. It started with a $200 axle, and a few thousand dollars later I was done :)
Quote:
Originally Posted by Luuca View Post
diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

Ask me how I know...
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Originally Posted by Overhead View Post
this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.
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post #4 of 25 Old 01-23-2014, 11:47 AM Thread Starter
jesmac13
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Quote:
Originally Posted by Siva283 View Post
What did the bellhousing come off of? Are you sure you used the correct pilot bushing? And lastly are you absolutly positive there is no air in the lines. You symptoms are the same as mine where when my master went and again when my slave went.
Don't recall the year on the bellhousing. I didn't change the pilot bushing. I did realize after looking at some pictures that the slave is installed upside down (I put the screw pointing down ). I'll flip it around tonight and see if that fixes it. Also - what's the best way to bleed it?
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post #5 of 25 Old 01-23-2014, 11:47 AM Thread Starter
jesmac13
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Quote:
Originally Posted by Que89YJ View Post
Did you tighten the t mount bolts?
Should be tight
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post #6 of 25 Old 01-23-2014, 12:19 PM
Siva283
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Hold up. There should be 2 bolts holding the slave on and it can be eithier orientation. There should not be a bleeder on the slave. To bleed it you aim the pistion down and push it in slowly and it will come back out on its own. Dont let it come all the way out. Do that 10 or 15 times and the slave is bled assuming you have no leaks.

1995 YJ. 2 inch BDS Spring lift. 1 inch shackle lift. 1.25 inch JKS Body Lift 33x12.5x15's. Engo 10,000 pound winch.

Quote:
Originally Posted by Magnum View Post
I gave the Jeep the required offering of $$, sweat, and blood, and everything works fine now. -- Jim
Quote:
Originally Posted by ldso View Post
. It started with a $200 axle, and a few thousand dollars later I was done :)
Quote:
Originally Posted by Luuca View Post
diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

Ask me how I know...
Quote:
Originally Posted by Overhead View Post
this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.
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post #7 of 25 Old 01-23-2014, 12:20 PM
Siva283
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If there is only one screw or bolt holing it on you are missing one and that is your problem. There should be one on the top and one on the bottom.

1995 YJ. 2 inch BDS Spring lift. 1 inch shackle lift. 1.25 inch JKS Body Lift 33x12.5x15's. Engo 10,000 pound winch.

Quote:
Originally Posted by Magnum View Post
I gave the Jeep the required offering of $$, sweat, and blood, and everything works fine now. -- Jim
Quote:
Originally Posted by ldso View Post
. It started with a $200 axle, and a few thousand dollars later I was done :)
Quote:
Originally Posted by Luuca View Post
diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

Ask me how I know...
Quote:
Originally Posted by Overhead View Post
this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.
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post #8 of 25 Old 01-23-2014, 03:26 PM Thread Starter
jesmac13
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I was referring to the orientation of the small allen screw that's on the back of the slave (near the hose). Its bolted on with two bolts. I'll give bleeding a try. Thanks for the help so far.
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post #9 of 25 Old 01-23-2014, 07:58 PM Thread Starter
jesmac13
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Tried bleeding as you suggested. Definitely got some air out and the pedal feels a little tighter, but no change with the vibrations.

Back to Que89YJ's question though - only 3 of the 6 skid plate bolts are in (the other 3 broke). I had intended to drive it to a welder to get it fixed. Think that's allowing the tranny to flex to much?

Any other thoughts?
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post #10 of 25 Old 01-23-2014, 08:07 PM
rambo3489
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Bleeding was good. I doubt missing the skid bolts would affect anything. What year were the trannies? Maybe your pilot bearing is a .75 and your tranny tip is a .580 or whatever the small one is?

Or maybe the pilot bearing is shot?

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post #11 of 25 Old 01-23-2014, 08:26 PM
whiskeywiz
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Is it running on all cylinders? Not trying to be a wise guy, just that I did a tune up on my daily driver and replaced the spark plug wires just recently. After driving for a couple of days it started running like hell, vibrating terribly at higher speeds. I must have run the wires carelessly because I pulled over to take a look under the hood and the no. 1 wire was pulled right out of the boot! The steering shaft must have grabbed it.
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post #12 of 25 Old 01-24-2014, 08:51 AM Thread Starter
jesmac13
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Quote:
Originally Posted by rambo3489 View Post
Bleeding was good. I doubt missing the skid bolts would affect anything. What year were the trannies? Maybe your pilot bearing is a .75 and your tranny tip is a .580 or whatever the small one is?

Or maybe the pilot bearing is shot?
Transmission didn't change, only replaced the bellhousing, so pilot bearing should be unaffected. Pilot bearing was replaced maybe 10k miles ago, so it should be fine.
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post #13 of 25 Old 01-24-2014, 08:56 AM
Que89YJ
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Fix the trans bolts. If the mount allows any movement it would explain the vibration.
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post #14 of 25 Old 01-24-2014, 10:02 AM
Siva283
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Quote:
Originally Posted by rambo3489 View Post
Bleeding was good. I doubt missing the skid bolts would affect anything. What year were the trannies? Maybe your pilot bearing is a .75 and your tranny tip is a .580 or whatever the small one is?

Or maybe the pilot bearing is shot?
Same crank same trans. He only change the bellhousing so the pilot bushing should be right.

1995 YJ. 2 inch BDS Spring lift. 1 inch shackle lift. 1.25 inch JKS Body Lift 33x12.5x15's. Engo 10,000 pound winch.

Quote:
Originally Posted by Magnum View Post
I gave the Jeep the required offering of $$, sweat, and blood, and everything works fine now. -- Jim
Quote:
Originally Posted by ldso View Post
. It started with a $200 axle, and a few thousand dollars later I was done :)
Quote:
Originally Posted by Luuca View Post
diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

Ask me how I know...
Quote:
Originally Posted by Overhead View Post
this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.
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post #15 of 25 Old 01-24-2014, 10:03 AM
Siva283
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Location: Falling Waters
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Quote:
Originally Posted by que89yj View Post
fix the trans bolts. If the mount allows any movement it would explain the vibration.
x2

1995 YJ. 2 inch BDS Spring lift. 1 inch shackle lift. 1.25 inch JKS Body Lift 33x12.5x15's. Engo 10,000 pound winch.

Quote:
Originally Posted by Magnum View Post
I gave the Jeep the required offering of $$, sweat, and blood, and everything works fine now. -- Jim
Quote:
Originally Posted by ldso View Post
. It started with a $200 axle, and a few thousand dollars later I was done :)
Quote:
Originally Posted by Luuca View Post
diagnose the real issue before you start going all Obama on it - spending mad cash you'll need for other important things.

Ask me how I know...
Quote:
Originally Posted by Overhead View Post
this is also my second set of RC springs this year. I'd rather spend the money again and get something that will last.
Siva283 is offline  
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