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Old 07-25-2013, 06:18 AM   #1
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Metric or SAE?

I'm putting together a trail tool kit and want to know what the majority of the nuts/bolts are (apart from Torx) are they metric or SAE? and if metric are they north-American metric? (10,13,15,17,19) or everyone else metric? (10,12,14,17,19). and the front axle nut for an 03 TJ is 36mm correct?

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Old 07-25-2013, 06:42 AM   #2
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35mm. Is correct, you'll also need 8mm for driveshaft removal, ( a long box, and a ratchet wrench ) and various SAEs up to 3/4 ".

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Old 07-25-2013, 07:37 AM   #3
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Oops. 36mm
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Old 07-25-2013, 08:29 AM   #4
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From my experience, it is 50/50 on metric/sae. I have a set of each for my trail box.
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Old 07-25-2013, 08:43 AM   #5
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The TJ has a mix so you ned both SAE and Metric
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Old 07-25-2013, 10:11 AM   #6
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Add 18mm to the metric list.
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Old 07-25-2013, 04:37 PM   #7
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Add 18mm to the metric list.
is that a common size? or just for a few important spots?

so basically 8,10,13,15,17,18,19,36mm and up to 3/4" sockets and wrenches?
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Old 07-25-2013, 04:58 PM   #8
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I can't speak to the rest. I'm still building my own on board took kit. I just know I had to go buy an 18mm wrench when I needed to remove my rear bumper. If there is one there may be more.

Mine is also a 2003 Sport.
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Old 07-25-2013, 05:59 PM   #9
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If memory serves me correct the rear shock bolts need an 18mm. Perhaps when I get home tomorrow I'll write up a detailed list of everything in my on board tool bag and wrench roll.. Over the years I've learned not to carry any wrenches or sockets that aren't needed.. I'm always adding something, for instance, I just recently added the ARB tire repair kit, after our last trip I ended up having to drive over 100 miles to get a tire plugged, lost an entire day.. Lesson learned...
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Old 07-25-2013, 07:31 PM   #10
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Originally Posted by Rubicondon53 View Post
If memory serves me correct the rear shock bolts need an 18mm. Perhaps when I get home tomorrow I'll write up a detailed list of everything in my on board tool bag and wrench roll.. Over the years I've learned not to carry any wrenches or sockets that aren't needed.. I'm always adding something, for instance, I just recently added the ARB tire repair kit, after our last trip I ended up having to drive over 100 miles to get a tire plugged, lost an entire day.. Lesson learned...
I already have a quick plug kit (from slime i think, but there all the same)... one of the first things i got for my tool bag

a write up for just tools would be awesome. ive only been able to find write ups on gear (ie recovery gear, flashlights, fire extinguisher....). and your right, you don't really want to pack your whole toolbox in the back of your jeep if you don't have to (im a mechanic. I have TONS of tools!!!!!!)

I cant remember the last time i used an 18mm anything. maybe i'll just take the 18mm socket and wrench from my work tools. I remember needing a 13mm wrench (or 12 point socket) to remove the wheel bearing.
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Old 07-25-2013, 07:54 PM   #11
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Originally Posted by Rubicondon53 View Post
If memory serves me correct the rear shock bolts need an 18mm. Perhaps when I get home tomorrow I'll write up a detailed list of everything in my on board tool bag and wrench roll.. Over the years I've learned not to carry any wrenches or sockets that aren't needed.. I'm always adding something, for instance, I just recently added the ARB tire repair kit, after our last trip I ended up having to drive over 100 miles to get a tire plugged, lost an entire day.. Lesson learned...
Rear lower shock bolts are 15 and 18mm.
Rear frame side trackbar is 15 and 18mm
Upper shock bolts are 13mm
Lower front shocks are 13mm both side
Gas Tank skid bolts are 1/2"
Trans mount into skid plate are 13mm
Trans skid to frame are 3/4" up thru 02
Trans skid to frame are both 18 and 19mm depending on the rig 03-06
Driveshaft bolts with the small heads are 5/16 or 8mm
Front driveshaft at CV is 1/2"
Some trans mount to trans are 16mm, some are 5/8"
All steering castle nuts are 3/4" including frame side trackbar front
Caliper to knuckle bolts are 13mm front, 10, 12, and 13mm for the rear caliper to backing plate depending on the vehicle
Front bumper is 3/4", T-50 and 55, and 15mm
Swaybar links at rear swaybar are 15 and 18mm
Swaybar to rear axle is 15mm
Lower control arms are metric but 13/16 and 7/8" work perfectly to remove most. Some have the same on both sides which I believe 13/16" works on.

Upper control arms are 15mm and 15mm
T-block vent bolt at rear axle brake line is 9/16"
Bleeder screws are 3/8" and 10mm
Upper balljoint castle nut is 7/8"
Lower Balljoint castle nut is big ass crescent wrench
Unitbearing to knuckle bolts are 13mm 12 point
Diff cover bolts are 1/2"
Front fender bolts are 13mm
Oil pan bolts are 7/16" and 1/2"
Rear bumper lower is 18mm
Master Cylinder to booster is 13mm

I know more but those are the quick ones off the top of my head.
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Old 07-25-2013, 08:30 PM   #12
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Originally Posted by Black Magic Brakes View Post

Rear lower shock bolts are 15 and 18mm.
Rear frame side trackbar is 15 and 18mm
Upper shock bolts are 13mm
Lower front shocks are 13mm both side
Gas Tank skid bolts are 1/2"
Trans mount into skid plate are 13mm
Trans skid to frame are 3/4" up thru 02
Trans skid to frame are both 18 and 19mm depending on the rig 03-06
Driveshaft bolts with the small heads are 5/16 or 8mm
Front driveshaft at CV is 1/2"
Some trans mount to trans are 16mm, some are 5/8"
All steering castle nuts are 3/4" including frame side trackbar front
Caliper to knuckle bolts are 13mm front, 10, 12, and 13mm for the rear caliper to backing plate depending on the vehicle
Front bumper is 3/4", T-50 and 55, and 15mm
Swaybar links at rear swaybar are 15 and 18mm
Swaybar to rear axle is 15mm
Lower control arms are metric but 13/16 and 7/8" work perfectly to remove most. Some have the same on both sides which I believe 13/16" works on.

Upper control arms are 15mm and 15mm
T-block vent bolt at rear axle brake line is 9/16"
Bleeder screws are 3/8" and 10mm
Upper balljoint castle nut is 7/8"
Lower Balljoint castle nut is big ass crescent wrench
Unitbearing to knuckle bolts are 13mm 12 point
Diff cover bolts are 1/2"
Front fender bolts are 13mm
Oil pan bolts are 7/16" and 1/2"
Rear bumper lower is 18mm
Master Cylinder to booster is 13mm

I know more but those are the quick ones off the top of my head.
What no torque specs?
Just kidding, nice list. Probably covers most trail fixes.
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Old 07-25-2013, 08:31 PM   #13
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Originally Posted by jeepers29 View Post
from my experience, it is 50/50 on metric/sae. I have a set of each for my trail box.

x2
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Old 07-26-2013, 05:58 AM   #14
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Originally Posted by Black Magic Brakes View Post
Rear lower shock bolts are 15 and 18mm.
Rear frame side trackbar is 15 and 18mm
Upper shock bolts are 13mm
Lower front shocks are 13mm both side
Gas Tank skid bolts are 1/2"
Trans mount into skid plate are 13mm
Trans skid to frame are 3/4" up thru 02
Trans skid to frame are both 18 and 19mm depending on the rig 03-06
Driveshaft bolts with the small heads are 5/16 or 8mm
Front driveshaft at CV is 1/2"
Some trans mount to trans are 16mm, some are 5/8"
All steering castle nuts are 3/4" including frame side trackbar front
Caliper to knuckle bolts are 13mm front, 10, 12, and 13mm for the rear caliper to backing plate depending on the vehicle
Front bumper is 3/4", T-50 and 55, and 15mm
Swaybar links at rear swaybar are 15 and 18mm
Swaybar to rear axle is 15mm
Lower control arms are metric but 13/16 and 7/8" work perfectly to remove most. Some have the same on both sides which I believe 13/16" works on.

Upper control arms are 15mm and 15mm
T-block vent bolt at rear axle brake line is 9/16"
Bleeder screws are 3/8" and 10mm
Upper balljoint castle nut is 7/8"
Lower Balljoint castle nut is big ass crescent wrench
Unitbearing to knuckle bolts are 13mm 12 point
Diff cover bolts are 1/2"
Front fender bolts are 13mm
Oil pan bolts are 7/16" and 1/2"
Rear bumper lower is 18mm
Master Cylinder to booster is 13mm

I know more but those are the quick ones off the top of my head.
that's awesome! thanks for the list. so 8,10,12,13,15,18,19, most SAE, and a few large torx thrown in there as well. that should save some space and weight in the tool bag
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Old 07-26-2013, 06:00 AM   #15
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Originally Posted by All Terrain TJ View Post
What no torque specs?
Just kidding, nice list. Probably covers most trail fixes.
the torque specs are, if you hear a snap! and turning suddenly becomes easy you went to far . but that should just about cover it.
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Old 07-26-2013, 06:30 AM   #16
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Yes, you need SAE and Metric...1/2" drive and 3/8" drive...good quality Torx bits (preferably 2 or more of each, especially if you buy from Harbor Freight).
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Old 07-26-2013, 09:18 AM   #17
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Yes, you need SAE and Metric...1/2" drive and 3/8" drive...good quality Torx bits (preferably 2 or more of each, especially if you buy from Harbor Freight).
I prefer to keep the number of 1/2" drive tools to a bare minimum. I carry a ratcheting breaker bar to loosen the few fasteners that require high forces like the 12 point unitbearing bolts, lugnuts, and aftermarket frame side trackbar bolts. That means my 1/2" stuff consists of the breaker bar, 3 or 4 sockets, and a couple of extensions.

I carried around a Husky 1/2" set for several years and after never using it on the trail, I gave it away to someone in need.
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Old 07-26-2013, 09:46 AM   #18
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If I didn't have rust to contend with, I'd agree. Penetrating oil and 1/2" drive sockets/ratchets make rust a lot easier to live with.
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Old 07-26-2013, 03:33 PM   #19
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Originally Posted by Black Magic Brakes View Post

I prefer to keep the number of 1/2" drive tools to a bare minimum. I carry a ratcheting breaker bar to loosen the few fasteners that require high forces like the 12 point unitbearing bolts, lugnuts, and aftermarket frame side trackbar bolts. That means my 1/2" stuff consists of the breaker bar, 3 or 4 sockets, and a couple of extensions.

I carried around a Husky 1/2" set for several years and after never using it on the trail, I gave it away to someone in need.
Agreed, I carry 1/2" breaker, ratchet, extensions and maybe three sockets.. Everything else is 3/8ths and a few 1/4 " drives... BTW, that was a very nice lost.. The only sizes I have in addition to your list are 9/16, 7/16, and 3/8 which are used on my top and rear safari racks...

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