Pilot Bushing Question - JeepForum.com

 
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post #1 of 7 Old 10-18-2013, 08:01 PM Thread Starter
jakeaeb
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Pilot Bushing Question

Just a little back story, I put a 94 XJ 4.0 in the YJ and I'm putting a 91 YJ AX-15 in. I got a pilot bushing from Advance Adapters and it went in just fine. My question is, how far do I press this bushing into the crank? I've been searching for hours but found nothing. Just want to make sure before I try to put the transmission in tomorrow.

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post #2 of 7 Old 10-18-2013, 09:14 PM
bpounds
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The bore should have a shoulder at the bottom. Bearings always seat against a shoulder. Seating it firmly against the shoulder helps insure that it is installed concentric.

Bill
Dodge did not build my Jeep.
1988 Wrangler,4.2L I-6, Howell EFI JP-1,GM HEI Ign, 5 Speed Peugeot, Zone 2.5" lift + 1/2" booms, BFG 31 x 10.5, Bestop.
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post #3 of 7 Old 10-18-2013, 09:27 PM Thread Starter
jakeaeb
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So, push it as far back as it goes?
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post #4 of 7 Old 10-18-2013, 09:30 PM
bpounds
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Quote:
Originally Posted by jakeaeb View Post
So, push it as far back as it goes?
I'm not looking at the crank, but normally that's what you would want to do. Take a quick measure of the depth of the bore and make sure that's not ridiculously too deep. Bearings rarely go in a bore with freedom to move axially.

Well, you should have measured before you started inserting it, but maybe you can still get a probe in there to check the shoulder depth.

Bill
Dodge did not build my Jeep.
1988 Wrangler,4.2L I-6, Howell EFI JP-1,GM HEI Ign, 5 Speed Peugeot, Zone 2.5" lift + 1/2" booms, BFG 31 x 10.5, Bestop.
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post #5 of 7 Old 10-18-2013, 09:42 PM Thread Starter
jakeaeb
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You're right, I should have measured, this is my first trans swap. The bushing's got about a 1/4" to go before it hits the shoulder, what do ya think?
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post #6 of 7 Old 10-18-2013, 09:52 PM
bpounds
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Quote:
Originally Posted by jakeaeb View Post
You're right, I should have measured, this is my first trans swap. The bushing's got about a 1/4" to go before it hits the shoulder, what do ya think?
If it's about flush now, another 1/4" seems reasonable to me.

If in doubt, you could do some measuring of the bell housing to stub shaft on the tranny, and compare that to the dimension from the block face to the bearing.

Bill
Dodge did not build my Jeep.
1988 Wrangler,4.2L I-6, Howell EFI JP-1,GM HEI Ign, 5 Speed Peugeot, Zone 2.5" lift + 1/2" booms, BFG 31 x 10.5, Bestop.
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post #7 of 7 Old 10-18-2013, 10:02 PM Thread Starter
jakeaeb
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Will do, thanks for your help man!
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