Moving Deck Won't Shift fully forward at Zero

[emcnelis]

I'm currently going through my gearbox clutches, and on one of my lanes the deck will not shift all the way forward at zero degrees. It was doing this before I rebuilt the clutch, but when i adjusted it so the moving deck cam follower was on the high of the moving deck scissor cam, the deck still has slight movement forward when the clutch is engaged. It isn't causing with the turret not dumping the pins at zero, but am curious what else could cause this besides the cam follower not being fully on the high of the cam. Thanks guys.

[Popeye]

Try adjusting your gearbox clutch to stop a little later. You could have some play in the main key-way of the 1-1 shaft. Does the moving deck scissors cam jump when the deck is shifting setting new pins? That could be a clue. Let us know what you find.

[emcnelis]

The cam looks to move smoothly. We had a broken key on a 1 to 1 a few months back which we replaced so I am familiar with what that kind of play looks like. However I do see some grease build up coming from the 1 to 1 which i understand can be a sign of a broken key or wallowed out keyway. I allowed the clutch to stop later and that seemed to do the trick. I had to let it stop quite a bit later though. I'm going to check the play on the cams without the pressure of the cam followers on them when I am in on Thursday. If the 1 to 1 is fine can there be other causes or is letting the clutch stop later the fix?

[House]

If the mdsc is worn (rounded off) where the cam follower goes to high dwell at the end of the cycle, this can result what you are seeing. Like popeye, I adjust the clutch to stop a little later (crank rod above center on 4:1 crank arm) when I encounter this. Its a good method I've used for years, because wear is always a factor especially in that area.

[House]

Also, if the cam is a bolt on style rather than a press on, check for tightness on the bolt.

[emcnelis]

Thanks guys. I'm gonna check on these items when I get into work but it sounds like I got my answer.

[Popeye]

The cam looks to move smoothly. We had a broken key on a 1 to 1 a few months back which we replaced so I am familiar with what that kind of play looks like. However I do see some grease build up coming from the 1 to 1 which i understand can be a sign of a broken key or wallowed out keyway. I allowed the clutch to stop later and that seemed to do the trick. I had to let it stop quite a bit later though. I'm going to check the play on the cams without the pressure of the cam followers on them when I am in on Thursday. If the 1 to 1 is fine can there be other causes or is letting the clutch stop later the
fix?

You said you fixed the 1-1 key. Did you change the shaft and the gear too? If not when the relationship between the shaft and the spur gear is not tight you will continue to break or wear out the key. Is this the key you are referring to? Or is it the key in the moving deck scissors cam?