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Unread 02-27-2010, 02:42 PM   #1
BSUCrew
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YJ Front Calipers - Bolts and Allens

My buddy and I are replacing my calipers and rotors. It came to a quick halt after we saw the bolt heads shown in the photo. Also neither of us had the right allen to take off the caliper. I think it is 7mm. Gonna pick that up tomorrow. If anyone knows what sizes and types of sockets to use please let me know. Thanks




Last edited by BSUCrew; 02-27-2010 at 07:46 PM..
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Unread 02-27-2010, 06:04 PM   #2
Tshark299
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It's been a while since I've taken my calipers off, but I remember mine being Torx head bolts, not Allen. Not sure on the size.
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Unread 02-27-2010, 07:17 PM   #3
SteveJcoYJ
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i dont remember the size, but thats how the calipers are on the 87-89 d30's in my experience
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Unread 02-27-2010, 07:22 PM   #4
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It's a 7mm allen head. I got 3 of the 4 off, #4 needed some persuasion.

The hole for the allen wrench were pretty corroded on mine. Bought all new bolts from Auto Zone for less than $10. My bolt #4 got pretty chewed up by the vice grips undoing it so figured I'd give myself an easier r&r next time the calipers come off.
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Unread 02-27-2010, 07:50 PM   #5
BSUCrew
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Thanks for confirming it is a 7mm. This bolt that is circled is more what I am concerned about. Never seen anything like it.

http://www.jeepforum.com/gallery/showphoto.php?photo=48616&size=big&cat=
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Unread 02-27-2010, 08:16 PM   #6
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I don't remember having to take that off when I did calipers last. I'm pretty sure it was just the two recessed allen bolts and the flexible line, and that's it.
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Unread 02-27-2010, 09:51 PM   #7
sentinal02
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external torx, size E12 I believe (though not 100% sure of that). the D30 brakes used at least 3 different types of bolt heads over the years that I know of.
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Unread 02-28-2010, 04:36 AM   #8
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Originally Posted by sentinal02 View Post
external torx, size E12 I believe (though not 100% sure of that). the D30 brakes used at least 3 different types of bolt heads over the years that I know of.
Yeh, I used a 12 point socket to get mine off and then replaced them with regular headed bolts from a Cherokee D30.
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Unread 02-28-2010, 08:22 AM   #9
BSUCrew
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Originally Posted by JJorda View Post
I don't remember having to take that off when I did calipers last. I'm pretty sure it was just the two recessed allen bolts and the flexible line, and that's it.
We are doing the rotors as well. I believe they have to come off for those.
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Unread 02-28-2010, 10:37 AM   #10
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Originally Posted by BSUCrew View Post
We are doing the rotors as well. I believe they have to come off for those.
Yes they do have to come off. Yes they are E12 reverse torx. IF you get them out, look into replacing them with regular bolts
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Unread 02-28-2010, 11:46 AM   #11
BSUCrew
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Yes they do have to come off. Yes they are E12 reverse torx. IF you get them out, look into replacing them with regular bolts
Got them off. And they were E14's. Had to buy the whole set at Sears anyways. They are pretty worn, but I am going to put the old ones back in so I can drive it.

Anyone know where/how I can get hex head replacements? I suppose I could just go to the salvage yard and get them off another D30. But if there is a place online I can save some hassle and just buy and ship them.

Thanks for all your help guys.
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Unread 02-28-2010, 12:03 PM   #12
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yeah one thing i've found while pulling spare shafts from the junkyards over the years is that Jeep used 4 or 5 different types and styles of caliper bolts over the years. I have no idea why they did this.

Word of advice, put some locktite on them when you re-install them. I had issues before with the bolts backing out without it
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