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Old 06-14-2011, 12:15 AM
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Need Help with a NV3550 Transmission

I accidentally took this small bolt off of my transmission because i thought it was the fill plug because my instructions said the bolt was smaller(which its not). So i took this small bolt off and now it wont rethread in the threads because something has fallen in front of the threads. ANY ONE KNOW HOW TO FIX THIS PROBLEM thanks in advance!

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Old 06-14-2011, 12:18 AM   #2
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Can you spray a little wd40 in there to get the gunk out?

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Old 06-14-2011, 12:25 AM
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yeah i could see if that helps its just not grabbing the threads inside theres not much gunk in there it sounded like a piece fell behind it now it wont thread in
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Old 06-14-2011, 12:57 AM   #4
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Do you think the bolt was holding something on the inside? This doesn't sound good.
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Old 06-14-2011, 10:22 AM   #5
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Looks like the reverse idler shaft support bolt. If it is you need some transmission work to fix it.
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Old 06-14-2011, 11:29 AM   #6
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Hey, don't feel too bad I did the same thing and I have been working on my own vehicles for 40 years. I blamed mine on a senior monent. It can be fixed without pulling the transmission out. I thought mine would be sitting all summer due to cost to have that done.

It is for the reverse idler support.

The fix: I put a little grease in the hole that the bolt came out of to hold the support in place while you are moving it back into place. I used an awl ( stubby screwdriver with a point) to move it back up into position. You will know when it is there because the awl will go into the hole. Surprised me the first time and I missed getting the bolt back in quick enough when I removed the awi. I positioned the awl at the bottom of the hole and moved it up a 1/4" at a time til I got to the hole. I was very gentle after I got the bolt back in, gong into each gear including reverse while sitting still. Then I drove it only in the driveway in case of a problem. I had no problems and have been off-road since.

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Old 06-14-2011, 06:35 PM
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Thats awesome thanks for the help, I was puzzled none of my books pointed it out or anything which makes sense cause your obviously not supposed to touch it haha. thanks for the help im working on wedging it back in there now
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Old 06-14-2011, 08:28 PM   #8
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Great that there is a fix without ripping everything apart. Let us know how it works out.
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Old 09-11-2012, 01:09 PM   #9
 
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Did the solution posted work for you?

I made the same error trying to work in a hurry. Any help would be greatly appreciated.
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Old 10-20-2012, 03:32 AM   #10
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I just did the same damn thing!!!! Why does this bolt even exist? Anyways, did the grease solution work? I just spent an hour pulling transfer case and am about to drop tranny but I really dont want to if there is an easy fix. I'm at 109,xxx miles and figure since Im pulling tranny to take to shop to re-install that bastard bolt then maybe its worth having the damn thing re-built anyways. Should I just finish the task and spend the cash to have it re-built or try the grease trick?
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Old 10-20-2012, 03:36 AM   #11
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Thanks for advice. Im going to try this before I go any further on ripping the whole tranny out to be rebuilt
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Old 04-28-2017, 02:20 PM   #12
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Reverse Idler Shaft Bolt

I had the shop change my transmission fluid and they mistakenly removed this bolt. They didn't tell me, plugged the hole and had me drive off. I noticed the transmission leaking when I got home and went back. They gave me the bolt and told me "good luck".

Mechanic hasn't been able to get it back in so it's off to the transmission shop. At this point it has to be opened up to get all of the pieces re-aligned.
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Old 04-28-2017, 08:31 PM   #13
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A bit off topic but did your drain and fill plugs both end up being 17mm? My fill plug is 17mm, got that out no problem. But the drain plug seems to be smaller like a 16 or 15 mm.
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Old 04-29-2017, 07:36 AM   #14
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https://www.wranglerforum.com/f282/fu...s/23756?page=3

Look at posts 27 and 30


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Old 05-18-2017, 12:50 AM   #15
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How exactly do you use the wire? I have been trying for hours with no success?

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