Tranny Issues

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C

cruiser-60

Joined
Nov 6, 2006
Threads
19
Messages
52
Location
Steamboat, CO
Website
www.outdoorlivingdecor.com
Hello,

To give you an update before i go in to my trany problem. I have moved back to CO, Steamboat Springs after meeting up with u all in Moab, UT.

So today i was out driving when my tranny started to act up. I 1st after 10-15 mph the trany would start to grind i would shift to 2nd and it would go away for a little bit and start up again. Also i lost reverse would not move and made the grinding noise.

So i crawled under the truck and took the tranny rock gard off and saw on the back end of the transmission that i'm missing a cap or something. What i saw is a hole a barring inside one broken bolt and a lose wire.

Does anyone of you know what i'm missing and what has gone wrong? Does this sound like a compleat tranny replce or rebuild?

My ride is a stock 87' FJ60

:crybaby:
 
Got any pictures to show us what you're describing?
 
Sounds like you lost the retaining bolt that holds the transfer case shaft in place. Once the shaft becomes displaced the insides of the case chew themselves all up. It's actually a fairly common failure.
 
Tranny Issue Pics

Ok here are some pics of the tranny issues that i'm having. The pics shows the back of the tranny showing the broken bolt, missing cap or somthing, bearing sitting to the side inside the tranny and a wire the is hanging. :frown::frown:
 
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DUDE! WTF, where the hell did your idler shaft go? DAMN!

Two pics. What it should look like, and what you are missing. Stop driving!
 
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pappy said:
DUDE! WTF, where the hell did you idler shaft go? DAMN!

Two pics. What it should look like, and what you are missing. Stop driving!
Click to expand...

I think he may have lost it on Moab rim. :flipoff2:


JK. That sucks and doesn't look like it will be cheap to solve either.

TR
 
So, this is on the Transmission and not the Transfer case? Is the wire a simple ground wire that was once attached to the bolt that sheared off? I don't see it on Jon's pic though. Can't be too expensive to go to pick n pull and grab another one, no?
 
This was on the transfercase, note the speedo connection on his pic. I have a bunch of spare gears, and that idler shaft that will fit your 1987.
 
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Cruisergreg said:
Sounds like you lost the retaining bolt that holds the transfer case shaft in place. Once the shaft becomes displaced the insides of the case chew themselves all up. It's actually a fairly common failure.
Click to expand...

I just skipped to the gorry part and missed Greg's post. How common is this, Greg? Should we all swap out to super duper class 10 bolts to hold that shaft in? Or does something internal happen to cause the shaft to "walk" out?

Just so folks know who don't wrench on their junk ... that shaft has a few gears that spin around it. I could only imagine what happens inside when the shaft is removed and those gears free float. :eek:
 
That seems like a surprisingly poor design for keeping the shaft in place. The few gearboxes I've taken apart have the ends of the shafts restrained by the outside of the case. In other words, you have to split the case in order to remove the shaft and any gears installed on it. It's not removable from outside of whatever gearbox you're working on. Plus, this odd design provides for one more point of leakage. What function does it serve to be able to remove that shaft from the outside of the T-CASE? I would think you'd only mess with that shaft if you actually had the case open and were dealing with maintenance issues. Maybe it's in a section of the T-CASE where you simply cannot split it into two halves, so you have to place the bearings and gears in roughly the right position while sliding the shaft into place to secure and align everything. Still seems like there could have been a better way.
 
pappy said:
I just skipped to the gorry part and missed Greg's post. How common is this, Greg? Should we all swap out to super duper class 10 bolts to hold that shaft in? Or does something internal happen to cause the shaft to "walk" out?

Just so folks know who don't wrench on their junk ... that shaft has a few gears that spin around it. I could only imagine what happens inside when the shaft is removed and those gears free float. :eek:
Click to expand...

Somehow, that shaft must see axial loads which are applied to the washer and transmitted into the bolt. That frequent loading would cause fatigue in the bolt and eventual failure. I just can't visualize how you would have axial loads on the shaft. I can see it being more likely that a bearing would seize onto the shaft and try to force it to spin. Then the flat spot on the end of the shaft would move, impacting the retaining washer and shearing the bolt. At that point, it didn't matter that the bolt broke because you were still initially dealing with a seized bearing. But, it could have cause collateral damage after the shaft worked its way out.
 
pappy said:
This was on the transfercase, note the speedo connection on his pic. I have a bunch of spare gears, and that idler shaft that will fit your 1987.
Click to expand...


That's what I thought. The originator kept saying "tranny" which threw me....
 
marcfj60 said:
What function does it serve to be able to remove that shaft from the outside of the T-CASE? QUOTE]

the older tcases that were not split had that design. it may be left over from that. i'm surprised the vehicle was still driving!:eek: that tcase has got to be totally trashed inside! the shaft must be for the low range gears and don't turn or touch the 4x4 set when in 2x4. i would still think the loose gears would bind somewhere and explode the case.

you definitely have to pull the transfer case out, tear it apart and inspect the internals from end to end. it may be safer to just get a new tcase.
Click to expand...
 
pappy said:
How common is this, Greg?
Click to expand...
Common enough that I've seen threads about it on Mud several times. I think Whatley had tech tip in TT once also. The bolt usually just vibrates loose and you loose the key...
 
marcfj60 said:
you have to place the bearings and gears in roughly the right position while sliding the shaft into place to secure and align everything.
Click to expand...
That's the reason.
 
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