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Old 01-11-2018, 10:18 PM   #11
LazyPanther
 
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Marko if you still have your trans on the floor, take the front half off and pull the first gear off of the counter shaft and see if the woodruff keys are still there. I have the same exact problem that you have but havent taken my trans down yet. If the keys are sheared off then no power will transfer to the counter shaft.
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Old 01-13-2018, 06:08 PM   #12
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i threw the trans back together, but that is an excellent theory. nothing visually looks broken there but since i got another trans now to put in i may as well dissect this one some more.

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Old 01-13-2018, 06:34 PM   #13
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I rebuilt my transmission about a year ago and I still have some pictures of the guts kicking around somewhere, although photobucket probably wants $400 a year for them. I can re-upload them if it would help.
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Old 01-14-2018, 04:13 AM   #14
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throw them on imgur if you have a few minutes. i am sure me and lazypanther arent the only ones who will run into this issue.

i just got the 86 trans swapped in. only moved the speed sensor over from the newer trans, everything else appears to be the same.

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Old 01-14-2018, 04:52 AM   #15
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Alright, cool. I'll go through the old thread and see if the pictures are still working. Sorry, I couldn't find a picture of the countershaft with the first gear removed.
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Old 01-14-2018, 04:59 AM   #16
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This brings up another problem with my trans that im sure others have had and will run into. When ever I shift gears and let off the clutch or let off the gas the trans would make a clanking noise like the gears had excessive play in them. Its been doing it for awhile and I was going to just rebuild it thinking that the bearings were shot but now that this has happened I think differently. I thinking that the keys are like an early warning that its time for a rebuild. I think thats why its the only gear thats not built into the shaft or splined in.
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Old 02-18-2018, 10:52 PM   #17
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I stumbled upon this post as I just encountered the same problem. There was no warning whatsoever, no bearing noise, no gear grinding, nothing abnormal of any kind since I rebuilt the motor 20k miles ago. My wife was merging onto the highway and just got the truck into 5th gear when it "popped out of gear" (her words) and revved like crazy. She downshifted to 4th and drove to the next exit and stoped at the light. She started from the light in 1st, got into the middle of the intersection and the truck just stopped and revved and wouldn't go. She called me, I told her to put in 4WD low and drive in 4th and nurse it home the next 2 miles. I knew it had to be something common to the all gears except 4th (i.e. the counter shaft, most likely the counter shaft drive gear) due to the symptoms. I've got the transmission torn down and in a vise and everything looks normal at first glance. Everything worked by hand too as the OP replied, and I too was concerned of real power just causing the symptoms again so I pulled the counter drive gear and voila--the woodruff key sprinkled out from behind the counter drive gear in about 12 pieces. The shattered key provided enough friction to make everything seem fine on the bench but when driveline power was applied, the counter drive gear spun on the counter shaft like it wasn't even connected. The drive side of the counter shaft keyways are pretty beat up too.

I can downsize and upload some pics if folks are interested.

I have no idea how this happened. The only thing I can think of is ever since I replace the propeller shaft bearing there was a light shutter when taking off on a steep uphill grade. It felt more like tired rear leaf springs than transmission though. Now I'm wondering if I was hammering the woodruff keys to pieces this whole time.

Anyone have a counter shaft and woodruffs for sale?
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Old 02-20-2018, 05:22 PM   #18
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send the counter shaft and gear out to a machine shop, have em repair it. if i knew it centered properly i would just weld it.
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Old 02-20-2018, 06:19 PM   #19
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Quote:
Originally Posted by jacob View Post
The only thing I can think of is ever since I replace the propeller shaft bearing there was a light shutter when taking off on a steep uphill grade. It felt more like tired rear leaf springs than transmission though.
This sounds like your shaft assembly was put back together out-of-phase. Easy mistake to make.
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Old 02-20-2018, 09:46 PM   #20
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Is the clutch in backwards? I know that can cause weird issues
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