JCR transfer case skid

kndrewa · May 23, 2010

I won a sweet raffle in the red river chapter a while back..!

THANKS!!!!

..anyways, I finally got around to installing this skid for my NP231.

the JCR skid is far superior to stock.

the JCR skid uses plenty of hardware to keep it strong and secure.
the stock skid only attaches with 3 bolts!

kndrewa · May 23, 2010

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STOCK SKID REMOVAL
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the stock skid must first be removed.
two bolts hold it to the transmission cross-member, one to the frame rail.

mine had been hit enough to mangle the transmission cross-member a bit.

kndrewa · May 23, 2010

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PRE-INSTALLAION MOCK-UP
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i jacked up the skid plate to mark for drilling.
its heavy, but after getting it balanced on the jack, it was a breeze..

..until i found that this exhaust clamp was in the way.
the exhaust clamp's threads contact the skid.
this prevented me from getting a flush mount.

the angle grinder made quick work of that problem!

the clamp was causing this gap between the framerail and the skid.

fixed!

kndrewa · May 23, 2010

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DRILLING FOR FRAME MOUNTS
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i lined everything up and marked centers for the frame holes.

drilling small pilot holes first makes centering bigger bits easier.

JCR recommends a step bit to quickly drill to the proper diameter.

a bit of flat black paint after drilling to prevent rust.

kndrewa · May 23, 2010

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FIRST IMPRESSIONS
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the skid is very well designed.
it follows the contour of the transmission cross-member perfectly.

the transfer case will be well protected!
the coverage is excellent from all angles.
note the cut-away for the catalytic converter.
note also the vertical lip to help deflect rocks.

kndrewa · May 23, 2010

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PREP, PRIME, & PAINT
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to prepare the surface i used some mild soap and water.
after washing, i used a bit of brake cleaner as a solvent.
this ensured the surface was dry and free of oils.
i wiped everything down and let it fully dry.

prep.

prime.

paint.

kndrewa · May 23, 2010

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NUTSERT INSTALLATION
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nutserts are cylinders containing threads.
they have a crush-able sleeve which pinches them in place.
they will be installed in the holes i drilled in the frame.
simple hand tools can do the job just fine.

the holes in the frame are the same outside diameter as the nutsert.

a combination wrench is used to hold the nutsert steady during installation.

completed side with 3 installed nutserts in the framerail.

the nutserts create a place to thread bolts into the frame.

it is now possible to hang the skid for final drilling.
i used a piece of wood between the jack and the skid to protect the finish.

kndrewa · May 23, 2010

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DRILLING FOR CROSS-MEMBER MOUNTS
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first i drilled pilot holes for the 3 self-tapping bolts.

3 bolts will hold the skid to the front of the transmission cross-member.

these holes are for the vertical bolts through the cross-member.
they were a pain to drill with such limited space - i wish i had a 2-post lift!

the step-bit wouldn't work here.
you have to drill through two layers of the cross-member.
so i used several bits to enlarge the holes progressively.

the final two cross-member hex bolts are installed vertically.
they sandwich the cross-member and the skid together.

they are flush mounted to the bottom of the skid plate.
this prevents them from becoming rounded from rock rash.

kndrewa · May 23, 2010

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INSTALLATION COMPLETE
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all there is left to do is tighten the bolts in the specified order.

great fit, great product!

thanks red river chapter, and thanks JCR!

kndrewa · May 23, 2010

i'll have to get some shots on the trail at NWFEST 2010.

XJJeepNewb · May 23, 2010

That's a great write-up.

I bought the skid and sliders a few months ago and put the sliders on but then we moved to another state and the skid got packed/unpacked and is sitting in the garage.

This gives me some motivation to get off my ass an get it installed. How long did it take you (after prep and paint)?

Ian Christiansen · May 23, 2010

The JCR skid is a great product. It took me about an hour to install mine.

xcm · May 23, 2010

it really does fit to the oem crossmember quite well... it looks like a nice skid.

FlexdXJ · May 23, 2010

I love mine too but I HATE nutserts with a passion. They didn't work out to well for me! There are three of them holding right now but i need to run bolts through the rails to secure it even more.

kndrewa · May 23, 2010

FlexdXJ said:
I love mine too but I HATE nutserts with a passion. They didn't work out to well for me! There are three of them holding right now but i need to run bolts through the rails to secure it even more.

yeah.. ..i had never dealt with them before.
it would be easier to get them to grip with a slightly smaller hole.
JCR recommends this now - drill slightly smaller than the nutcerts OD.

Kevin3151 · May 27, 2010

Big fender washers and long through bolts for the frame rail. Nutserts suck for skid plates.

Be careful of the brake and fuel lines on the inside of the rail!

KH

kndrewa · Nov 2, 2011

XJJeepNewb said:
How long did it take you (after prep and paint)?

Ian Christiansen said:
The JCR skid is a great product. It took me about an hour to install mine.

Yep, about an hour.
More time if you're "over-documenting-for-a- NAXJA

-thread" like I was.
haha!

JCR transfer case skid

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