C160 shift issues.

[MCB (inactive) 5]

Hey y'all hello from East Texas. I've looked through the threads and haven't found a topic that addresses my problem. I have a C160 with best I can tell the 8 speed tranny. 1 1/8 inch axels. It originally would not go into second and third. Range selection wasn't a problem. I have completely rebuilt it with all new bearings and a thorough cleaning. Nothing was broke or missing although it had plenty of water and sludge in the case. It's back together now but not installed in the tractor. It still will not go into second and third. First and reverse are smooth. Have I missed something ?

[Theroundhousernr 590]

The most simple thing that comes to mind would be the dog point set screw is to tight that holds the shifter from pulling out. Back off the set screw a hair. Internals I'll let to someone else.

Oops just missed that it did that before you took it apart.

Edited May 6, 2015 by Theroundhousernr

[Racinbob 11,251]

When trying to shift to 2nd or 3rd is it that the shifter just won't move? If that's the case it sounds like the shifter fork may be bound up. The 2 and 3 utilize the same fork internally.

[KC9KAS 4,741]

Welcome to RedSquare. Someone will.be along to help you out.

[Racinbob 11,251]

I'm not visualizing what would bind the fork up. Is it free to move and not rusted tight? I'm assuming you reassembled it correctly since it had the issue before you opened it up.

[MCB (inactive) 5]

Thanks for the responses guys. I've already adjusted the slack in the shift ball. Moving from first/reverse shift fork to 2nd/3rd isn't a problem. The trouble seems to be specific to the 2nd/3rd fork. I'm pretty sure I assembled everything correctly. I was hoping I wasn't going to have to split the case again. If anything you've verified that fact. Lol. I'll let y'all know this evening my findings.

[Racinbob 11,251]

You can pull the shifter and see if you can move the forks. I'm thinking you won't be able to since the shifter won't move it. Are you sure you got the shift stop pin, spring and both balls installed correctly? I'm thinking that, if you didn't, it would affect both shift forks/rails but maybe not. Dumb question here, did you rotate the gears a bit? It is possible for the gears to be in a position where it won't go into a gear.   It's not likely that's the problem since it's been ongoing but just a thought.

[stevasaurus 22,883]

Hello...1st (like Bob said)...pull the shifter out and verify that you are in neutral.  You should see the 2 shift forks form a square.  If not, use a large screwdriver to slide that shift fork that will make it so.  The shift fork that is toward the axle is your 2nd and 3rd fork.  Once you are sure it is in neutral, use the screw driver to slide the fork that is closest to the axle.  If you still can't shift that fork, the problem is inside.  It could very well be a missing or bad detente ball.  Did you have the shift fork shafts pulled out of the casting when you rebuilt your transmission??  Here is a link to the shift fork thingy...let's see what you come up with here before we go farther. 

 

[groundhog47 347]

I took one apart awhile back that had input shaft sheared just at "slide" point, caused a burr that wouldn't pass through bearing causing a lock up. See if when you are in reverse or low and turning input shaft/pulley that axels turn accordingly. When I started disassembly it was not evident till  started pulling out gear pinion. Shaft burr was stuck inside bearing cage, otherwise appearing normal with gear assemblage. 

By the way almost neighbors as we WH guys go! Catmanii over in Bivins. 

[buckrancher 2,694]

check the detent balls and spring & rod could be missing a ball

 

Brian

[MCB (inactive) 5]

Alright WH-er's. Again thanks for the input. After reviewing and trying suggestions, nothing changed. I decided to open the case again. The detent ball, spring and pin all seemed to be in good shape. All the gears were turning and meshing. Using a large screw driver i attempted to move sliding forks. 2nd/3rd still no movement. I removed the 1st/reverse fork and gear and while trying to remove the other set I noticed the sliding gear would not move on the splined shaft. This appears to be the problem but I ran out of time so I'll resume the tear down tommorow. Night all.

[Racinbob 11,251]

Could you post some pics of the innards? Since you just rebuilt the transmission I'm assuming the gear isn't seized up on the shaft. You mentioned detent ball in a singular sense. You means balls? There's two of them. 

[MCB (inactive) 5]

Sorry Racinbob. There are two balls. No sir there are no gears or shafts seized. This evening I'm going to gut the case again and install the shift forks with their detent balls and spring just to see if they are functioning properly. Probably should have done this previously. It's that 20/20 hindsight thing. I will get some pics up this evening as well.

[Racinbob 11,251]

No problem at all. I just wanted to clarify things. I'm no expert on these things but all I can picture in my mind is that the 3/2 fork isn't wanting to move properly. Did the tractor already have the problem when you got it? If so, maybe the PO was messing with it and put it back together incorrectly and you just duplicated what was already done. I'm kinda befuzzled and it will be interesting to find out what the problem is.

 

I know what you mean about the hindsight thing. I had some issues with mine that tormented me. I did get it back together and it's working great now but, as I was thinking about it, I was tempted to tear it apart again just to look at a couple things to educate myself. The fact that I had it done, it was working great and already painted stopped me from doing that.

Edited May 7, 2015 by Racinbob

[stevasaurus 22,883]

Is it possible that the hi/low mechanism is interfering with the 2/3 gear movement.  Here is a great thread on 8 speeds with some fantastic pictures...maybe you will spot something in the pictures. 

 

 

Here is a better link with pictures...see if something doesn't stand out here...