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Unread 11-03-2009, 09:58 PM   #1
CanadianZed-J
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How To Test a 247?

Long-story short, I'm looking to swap in a used 247 t-case I have.



Is it possible to test it while it's out of the vehicle?



While having the lever flipped in either high or low, I turned the input shaft and both the front and rear outputs turn. To me that seems like it works, but will it work when it's installed and there's resistance applied? There's also a little bit of slop when changing directions. Maybe 1/4". Is that alright?



Thanks,



CZJ.

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So I installed the flux capacitor but the Jeep just won't do 88 mph.

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Unread 11-04-2009, 12:46 AM   #2
sandman
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the slop is normal. the only way to test it is the way you did. just shift through the modes and spin to see if everything turns when its suposed to.
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Unread 11-04-2009, 07:11 AM   #3
GraKee99
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Tie you jeep to a tree and see if both front and rear tires spin.
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Unread 11-04-2009, 07:30 AM   #4
CanadianZed-J
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Quote:
Originally Posted by GraKee99 View Post
Tie you jeep to a tree and see if both front and rear tires spin.

And that will tell me if the t-case sitting on the floor of my garage works?







CZJ.
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So I installed the flux capacitor but the Jeep just won't do 88 mph.

-'99 WJ Limited, 4.7, Patriot Blue, 2" BB, 31" Mall-Terrains, Pavement Princess
-'97 TJ, Stone White, 4" Superlift, 33" SSRs, lunchboxed rear, 12K Titan winch, and 2.5 litres of exhillirating performance.
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Unread 11-04-2009, 07:43 AM   #5
GraKee99
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Yep, just do it. Don't ask questions.
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Unread 11-04-2009, 08:58 AM   #6
UltimatE
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Agreed, 1/4" slop is normal. Now if you have chain SLAP, that is bad. That is when you can hear the chain hitting the case.
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Unread 11-04-2009, 01:09 PM   #7
CanadianZed-J
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Alright, thanks guys. From my 10-second inspection the case seems to be ok. My plan was since it was already out and I was having a tranny shop do the swap (no time and it's a PITA job), I was going to have them crack it open, inspect it, replace anything it needed then install it. However, I'm a firm believer in not fixing it if it ain't broke. I don't want to turn a $150 job into a $600 job to make a working t-case still work. The 247 is generally a good horse so I think I'll try my odds installing it as-is.


CZJ.


PS. GraKee99, my neighbour is pissed about me pulling out his shrubs.
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So I installed the flux capacitor but the Jeep just won't do 88 mph.

-'99 WJ Limited, 4.7, Patriot Blue, 2" BB, 31" Mall-Terrains, Pavement Princess
-'97 TJ, Stone White, 4" Superlift, 33" SSRs, lunchboxed rear, 12K Titan winch, and 2.5 litres of exhillirating performance.
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Unread 11-04-2009, 03:15 PM   #8
sandman
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are you sure the input shafts are the same?
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Unread 11-04-2009, 03:23 PM   #9
CanadianZed-J
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Quote:
Originally Posted by sandman View Post
are you sure the input shafts are the same?

You mean the same between the two t-cases?


This is the original t-case in the Jeep. Thinking it was pooched, I swapped it out with another only to find it was a differential problem that led to no 4x4.




CZJ.
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So I installed the flux capacitor but the Jeep just won't do 88 mph.

-'99 WJ Limited, 4.7, Patriot Blue, 2" BB, 31" Mall-Terrains, Pavement Princess
-'97 TJ, Stone White, 4" Superlift, 33" SSRs, lunchboxed rear, 12K Titan winch, and 2.5 litres of exhillirating performance.
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Unread 11-04-2009, 03:41 PM   #10
sandman
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ooh, i see
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Unread 11-04-2009, 05:59 PM   #11
cmonson
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I just did a 247 to 247 swap and it took a total of 2.5 hours on my back in the driveway.

Very easy to do and you do not require anything but basic hand tools.

I do see you are from up North, but if you have access to a garage it is an easy job.
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Unread 11-04-2009, 08:54 PM   #12
jj99
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Sorry to ask another question in this thread, but I might be making this swap myself. How much does the T-case weigh? Wondering if I need a transmission jack or if I can balance it on my floor jack to get it in.
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Unread 11-04-2009, 08:57 PM   #13
sandman
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you can lift it your self but by no means is it light. i didnt use a jack at all.
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Unread 11-04-2009, 09:17 PM   #14
CanadianZed-J
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Quote:
Originally Posted by jj99 View Post
Sorry to ask another question in this thread, but I might be making this swap myself. How much does the T-case weigh? Wondering if I need a transmission jack or if I can balance it on my floor jack to get it in.

I think I've read before it was around 80 lbs. I carried mine today and that seems about right.



Quote:
Originally Posted by cmonson View Post
I just did a 247 to 247 swap and it took a total of 2.5 hours on my back in the driveway.

Very easy to do and you do not require anything but basic hand tools.

I do see you are from up North, but if you have access to a garage it is an easy job.


LOL, yeah, I'm from up North where our Jeeps don't fit in our igloos and our tools are made from stone and caribou bones.


I have a heated garage and my dad has a heated garage with a hoist. What I don't have is time and yesterday I had it undercoated so I'm more interested in someone else going under there. After calling around, tonight I dropped off the Jeep at a reputable tranny shop who'll do the job for $200. For 200 bucks I'll have it swapped by pros during the day while I'm at work just down the street. Awesome.

(Last fall a buddy and I removed a 247 from my parts Jeeps outside, on sand, temps below freezing. Was a total PITA with squeezing our big hands on top of the t-case to get to those bolts with a lot of 1-click ratcheting. I do nearly all the work on all my Jeeps but for the jobs I don't like I contract out.)




CZJ.
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So I installed the flux capacitor but the Jeep just won't do 88 mph.

-'99 WJ Limited, 4.7, Patriot Blue, 2" BB, 31" Mall-Terrains, Pavement Princess
-'97 TJ, Stone White, 4" Superlift, 33" SSRs, lunchboxed rear, 12K Titan winch, and 2.5 litres of exhillirating performance.
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Unread 11-05-2009, 06:36 AM   #15
cmonson
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Quote:
LOL, yeah, I'm from up North where our Jeeps don't fit in our igloos and our tools are made from stone and caribou bones
don't worry, I lived in Edmonton for 23 years.
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