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HarborJeep
September 2nd, 2010, 06:09
In crawling around under my new-to-me '98 XJ, I discovered a few missing nuts. The most serious one is the nut that attaches the motor mount to the "frame". It is show in this link http://www.jeep4x4center.com/product-information.asp?number=52040267 It is the bolt that comes down in the picture.

Does anyone know the size of this bolt so I can pick one up on my way home tonight? Thanks!

HarborJeep
September 2nd, 2010, 07:21
Just got off the phone with my new friend - the Jeep parts guy at the dealership. The bolt size is 12x1.75. I don't know what that means, but it is a size of nut listed on the Fastenal website. Hopefully this helps someone else!

kastein
September 2nd, 2010, 07:26
ahhh, they're metric then. M12 (12mm diameter) and 1.75mm thread to thread pitch. You want nuts with captive fender washers for the bottom of the mounts, a flanged staked nut for the top of the passenger side mount, and an M12x1.75 flange bolt of ISO property class 10.9 or above for the top of the driver side mount.

They take a 15mm wrench... that much I know.

HarborJeep
September 2nd, 2010, 07:36
Thanks kastein! That helps a bunch. The passenger side is missing and I notice the driver's side is definitely a replacement. Any ideas what the previous owner did or didn't do? The mount bracket looks new on the passenger side.

kastein
September 2nd, 2010, 07:38
They probably just forgot to put them back on, or didn't tighten them down enough... you'd be surprised what some people will do to cars.

I've gone through this a couple times over the last two weeks due to pulling a drivetrain for a tranny swap, sadly didn't have new engine mounts on hand to install at the same time.

joe_peters
September 2nd, 2010, 09:24
While you are under there, take a look at the bolts that hold the mount brackets to the engine block--they like to fall out or shear off.

HarborJeep
September 2nd, 2010, 09:29
"they like to fall out or shear off" - I wouldn't doubt if they have. It seems as if I've inherited all the "quirks" of an XJ. I'm finding most are fairly easy to fix and parts seem cheap. Is this the impression of others?

kastein
September 2nd, 2010, 09:54
That's my general impression... it's why I own 3 XJ/MJ family vehicles now :roflmao:

Parts are even cheaper when you get em at the junkyard.

joe_peters
September 2nd, 2010, 10:50
That's my general impression... it's why I own 3 XJ/MJ family vehicles now :roflmao:

Parts are even cheaper when you get em at the junkyard.

"Salvage" yard for parts, junkyard for home decorations! :gee: