replacxing reverse shifter fork in a 806

[soybeanjoe]

I rebuilt the range shifting deck on my 806 last fall. Early this spring we started having trouble getting it to go into reverse & finally got to the point it wouldn"t go in. Only use this tractor on an auger in the fall & a side mount ditch mower in the summer so I parked it in the shed until a couple days ago.

I took the "indiana" cover off the side & found a small piece of metal laying on the cover"s ledge. I proceeded to drain the rest of the oil. With the oil drained I ran a magnet around the bottom of the housing & came out with 3 small pieces of metal. One was a small roll pin, another was part of the rever shifter fork where it pivots, and the other was the pivot pin which the original piece had broken off of.

So, I need to replace the shifting fork. How much of a job is it? Can I remove the range shifting deck, pull the shaft up & remove the fork thru the "indiana" opening?

TIA,
boog

 

[Owen Aaland]

You need to remove the range transmission cover. You will find more pieces of shift linkage to repair attached to the cover. If the shaft pivot holes are worn rebuilt covers are available that have been machined out and had bushings installed in the correct locations.

To replace the shift fork remove the attaching fastener that holds the fork to the shift rail. This may be a set screw, a bolt through the fork and rail or a couple of different style clips on the shift rail. Slide the rail to the rear enough to remove the fork.

If you also need to replace the shift rail you will also need to remove the access cover above the PTO on the back of the rear frame. If you have a three point hitch this will also be the attachment bracket for the third link. The shift rail can be accessed above the left side of the differential assembly.

 

[soybeanjoe]

I purchased a rebuilt range shift cover and linkages last fall thru our local CIH dealer so it should be in good shape.

One other quick question. I remember the service manager at the dealer saying to put the range shifter in a certain gear before removing the cover for easier remova . Now I don't remember which range speed to put it in. Seems like he said reverse. Would this be correct?

Thanks for the help.
Byron B

 

[FC Andy]

When I did the job you're going to do a few years ago to my tractor, I tore it down and put it back together in neutral. I doubt that it's any easier in any specific position. Just my two cents. -Andy

 

[soybeanjoe]

Owen answered my question on another forum. As he said, if you pull the range shift cover with the shifter in reverse the reverse shifter fork will be under the shifting linkage and will pull out when you remove the cover. Being I need to remove that shaft anyways it wouldn't matter but if you didn't need to remove the shaft it would be just that much more work replacing it

 

[caterpillar guy]

Check for wear in the slots in the reverse fork and other places. The roll pin goes in the high low cam on the bottom of the lid. Make sure the key goes in tight on the reverse fork before you put it back in. The holes in the levers under the platform wear also.
I would just convert it to the 56 series shift setup. I did that on our 806.