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Old 08-01-2014, 02:32 PM   #1
woodsrat
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Transfer case help

1984 GMC 1 ton 4x4 transfer case stuck in low range or neutral.
Can move the low and neutral pin with a pry bar to chance them but Can't get the lever to go to 2 wheel or 4 high.
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Old 08-02-2014, 05:35 AM   #2
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Re: Transfer case help

Do you know what t case you have in it ?
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Old 08-03-2014, 03:01 AM   #3
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Re: Transfer case help

Check out the NP205 rebuild thread on the front page of the 4X4 tech section.
I just rebuilt mine with the help of this info. It shows the shift shafts and detent balls.
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Old 08-04-2014, 02:17 PM   #4
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Re: Transfer case help

Quote:
Originally Posted by andrewmp6 View Post
Do you know what t case you have in it ?
I looked for a tag on it but can't find it, So not sure but I do know that the lever only goes straight ahead or back and nothing sideways as some are.
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Old 08-04-2014, 02:19 PM   #5
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Re: Transfer case help

Quote:
Originally Posted by farmall View Post
Check out the NP205 rebuild thread on the front page of the 4X4 tech section.
I just rebuilt mine with the help of this info. It shows the shift shafts and detent balls.
I will see it I can find it, Thanks
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Old 08-04-2014, 03:49 PM   #6
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Re: Transfer case help

Just looked at the NP205 thread, What a great job on that!

Now I am wondering if maybe the detent balls are out of place or if it has a broken spring in the one shaft that won't move.
My linkage is defiantly different than that one in the pics.
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Old 09-26-2014, 04:52 PM   #7
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Re: Transfer case help

Still looking for some help and don't want to keep high jacking others threads!
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Old 09-26-2014, 05:26 PM   #8
rich weyand
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Re: Transfer case help

First thing is to figure out which one you have.

Can you post a pic of the rear side of the transfer case?
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Old 09-26-2014, 06:09 PM   #9
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Re: Transfer case help

Ok I found your thread. So waiting on those pics.
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Old 09-27-2014, 03:17 AM   #10
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Re: Transfer case help

It should be a np205 but you never know with a older truck people swap things out for odd reasons.Like said take some pictures of the t case one of us can id it for you.
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Old 09-29-2014, 01:40 PM   #11
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Re: Transfer case help

I Removed lower detent (Gage)spring and ball and still can't move the rod in any direction.
This is the lower rod that is stuck and appears to be all the way out.

I can move the top rod in and out one place and that makes the truck either in low range or neutral but I can't get it back into gear (with shifter) with out crawling under it and moving it with a pry bar.
Not sure if this rod should move more than that.

How do I post pic or who can I sent them to that will post them for me.
Thanks
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Old 09-29-2014, 06:33 PM   #12
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Re: Transfer case help

Still waitin on info on which tcase u have... Assuming a 205 hit it with a hammer. Worked for me when i dropped mine out of a cherry picker 6' up
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Old 09-29-2014, 09:09 PM   #13
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Re: Transfer case help

Are you trying to shift without moving the driveshafts? You have to align the gears somehow and in a real situation the truck would be moving the gears a bit with the trans being in neutral it still moves and releases some tension on the gears and some movement is needed.
And as stated above we need pics !!!
No more posts from myself til pics are taken and posted! LOL
My bad! look for the "go advanced" link on the lower right of your post. Click and look for the paper clip in the choices. Click and browse find your pic.Either saved to your computer or from your camera card inserted in your computer. Make sense?
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Old 09-29-2014, 09:38 PM   #14
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Re: Transfer case help

https://www.google.com/search?q=np+2...ed=0CAcQ_AUoAg

Does this look familiar?
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Old 09-30-2014, 12:09 PM   #15
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Re: Transfer case help

Lets see if the pics work!

1: Rear of transfer case.
2: PTO side of transfer case.
3: Front of transfer case with linkage set-up.
4: Inside sticks.
5: Shift pattern on stick.
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Old 09-30-2014, 07:08 PM   #16
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Re: Transfer case help

Good job! Man you are a pro at pics already! That looks to be a NP205. I may have missed it but what is the PTO for?
Make sure it is disengaged before trying to shift the case.
Your case linkage seems to be in order and correct.
I am thinking your issue may be something to do with the PTO.
I would clean all that junk off there(first) and see if it isn't just stuck from rust or something.
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Last edited by jjzepplin; 10-01-2014 at 05:52 AM.
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Old 09-30-2014, 08:42 PM   #17
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Re: Transfer case help

I believe your problem is the PTO. Pull it!
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Old 10-01-2014, 09:48 AM   #18
woodsrat
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Re: Transfer case help

jjzepplin, Thanks for helping me with the pics and everything else so far!

PTO is for the dump box.
Dump box will go up if PTO is engaged and truck is moving and if not moving the truck you have to put everything into neutral to dump it.
Does this make sense to everyone?

If I pull the PTO is anything going to fall apart?
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Old 10-01-2014, 05:40 PM   #19
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Re: Transfer case help

Some fluid may come out but every PTO I've ever taken out no parts fell out. Simple gear to gear type install.
Clean that thing off first!
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