[tkfarms]

I have a Chevy c70 with a 5&4 and a 427. When we bought the truck at a auction it worked well... a few weeks later the aux tranny was stuck in drive. I took the top plate off the trans and there was some metal fragments in it but you cant tell where it came from....What would have broke away in there? I took a video of it....

 

[budfarmer]

Not quite sure about your big peace but to unlock it set the park brake leave the main in neutral the if you look under the passenger side frame in front of aux you will see the two levers where they go into the trans. Take a long screwdriver or something like that and put it through the forks and push or pull to get it unlock. This happens when linkages get some play in them.

 

[farmshop]

Yup pry bar or a hammer to get it jarred loose

 

[albertabuck]

Yep once you get some wear in the external shifter forks a prybar is a necessary item to carry lol, but usually it's because you are in two gears at once. On some different ones if they are wore, it helps if you twist the shifter one way or the other depending on which side of the H you are shifting. Kind of hard to explain on here, but the idea is to keep the end of the shifter from popping between the shifter forks. But it almost sounds like you got a different issue, you're stuck in only one gear. Not sure where the shrapnel come from, dunno, big chunks like that a never good to find.

Edit.....Thinking more about what I said, it is possible to have the shifter pop out between the forks and still only be in one gear, but when that happens you can tell something is screwy with the position of the shifter. Most often when you get into two gears is when you switch from one side of the H to the other. Just thought I'd clarify that.

Best I ever did was managed to get one into two gears at once roaring down the Yellowhead Trail in Edmonton when I was young working for a group of farmers, had unloaded at ATL (now Cargill) at about midnite, and was headed back to Redwater and trying to show off and stroking on it, grabbed a gear a bit too quick and managed to shove it into 3rd while still in second...got lucky, the driveline held as that old 960 skidded to a stop. I learned my lesson and kicked myself for my stupidity, but now it's kind of funny thinking back about it

I have a 72 GM tandem chassis with a good aux in it parted out. If you can't source one locally if it blows up or needs to be replaced drop me a pm with the model numbers off the tag on the tranny. If it matches won't be hard to make it yours.

 

[tkfarms]

Yep once you get some wear in the external shifter forks a prybar is a necessary item to carry lol, but usually it's because you are in two gears at once. On some different ones if they are wore, it helps if you twist the shifter one way or the other depending on which side of the H you are shifting. Kind of hard to explain on here, but the idea is to keep the end of the shifter from popping between the shifter forks. But it almost sounds like you got a different issue, you're stuck in only one gear. Not sure where the shrapnel come from, dunno, big chunks like that a never good to find.

Edit.....Thinking more about what I said, it is possible to have the shifter pop out between the forks and still only be in one gear, but when that happens you can tell something is screwy with the position of the shifter. Most often when you get into two gears is when you switch from one side of the H to the other. Just thought I'd clarify that.

Best I ever did was managed to get one into two gears at once roaring down the Yellowhead Trail in Edmonton when I was young working for a group of farmers, had unloaded at ATL (now Cargill) at about midnite, and was headed back to Redwater and trying to show off and stroking on it, grabbed a gear a bit too quick and managed to shove it into 3rd while still in second...got lucky, the driveline held as that old 960 skidded to a stop. I learned my lesson and kicked myself for my stupidity, but now it's kind of funny thinking back about it

I have a 72 GM tandem chassis with a good aux in it parted out. If you can't source one locally if it blows up or needs to be replaced drop me a pm with the model numbers off the tag on the tranny. If it matches won't be hard to make it yours.

So I should pry on the linkage right beside the tranny where they go into it? It seems to be only one gear... its in drive right now... its like its a regular 5 speed now.. tops out at around 70 -80 km. I will have a look at it tomorrow and see what I can do.

 

[tjdno1]

When I first got my IH it would do the same thing. Right under the shift lever under the cab floor is a double slide with a notch in each slide, it is where the shift lever moves the linkage to the tranny. When it is in neutral the notches should line up. I adjusted the linkage so they were aligned and it shifted perfectly after that. Also keep that slide greased so it will shift easier, I just make sure there is grease on the slides as there is no zerk fitting.

 

[albertabuck]

So I should pry on the linkage right beside the tranny where they go into it? It seems to be only one gear... its in drive right now... its like its a regular 5 speed now.. tops out at around 70 -80 km. I will have a look at it tomorrow and see what I can do.

I was kind of tired the other nite, I should have said things a bit different. Specifically for your situation...you're stuck in one gear, got that. But what is going on with the shifter? Does it seem to be out of position relative to the gear you are in? Does it seem to move into positions that it shouldn't be? I guess I got to thinking you had bigger issues. You commented in your video I believe that inside the transmission you could move everything but the gear that is engaged, maybe I misunderstood.

I'd have to go look at how the external shift forks are set up on one of those side loader auxiliaries. My IH Fleetstar gravel truck, as every other truck I ever drove with 5&4, is a top loader, has the shift rails in the top cover, so without looking at the one out back, I can't say right off how things are laid out on yours. I believe it is a side loader as well, if I can I'll try to have a look at it later. But if you find the end of the shift lever, there should be a assembly with two shift forks with rods extending to the shifters on the side of the transmission, and if it is that the shift lever has come out of place, it should be obvious and with a bit of looking you should be able to figure out which fork needs to be moved which way or what needs to be done to get things back in place.

There is the possibility something has piled up on the one of shift forks inside the transmission itself also. So if everything seems A OK with the shift linkage, that is probably where you will then find your trouble. It is also possible you have a gear seized on a shaft as well.
That big chunk you found is making me think you may have a more serious issue, hopefully I'm wrong.

 

[Transaxial]

So I should pry on the linkage right beside the tranny where they go into it? It seems to be only one gear... its in drive right now... its like its a regular 5 speed now.. tops out at around 70 -80 km. I will have a look at it tomorrow and see what I can do.

I have a complete auxiliary out of a GM tandem. Might be cheaper than parts for you!! PM me if you find trouble in yours. I hope it is just linkage adjustment!!


My transmission is a Spicer/Dana 8341 C , B/M 300194 2, S/N 753682

 

[tkfarms]

Ok so I went to look at it with my pey bar... On this truck the shifter was pretty much stuck... you couldnt move it in any postion... and when the top was open it was moving the gears maybe a 16th of a inch. So I just thought what the **** sounded like it could be the linkages having to much play in them.. so I went underneath the truck...stuck the bar in between both linkages and pryed on the one that was sticking out more.. and it just popped out. Went in the truck and now I can shift in any gear...Thanks for all the help... I think I will just leave a old pry bar in the cab now. And I wont be shifting that truck on the fly anymore... will just shift it when the truck comes to a compleat stop.