Hydro Linkage Travel Issue

[Bill D 2,664]

My 199X 416H can't reach top speed.  The cam plate hits the arm where it attaches to the transmission as shown in photo #1.  Does anyone know why this happens on some tractors and not others?  Is there a way to fix it without grinding something down?

 

Photo #2 shows my 1994 416H which has full linkage travel and can reach top speed.  I don't see an obvious difference between the two.

 

Thanks for the help as always.

[sqrlgtr 2,275]

1 hour ago, Bill D said:

My 199X 416H can't reach top speed.  The cam plate hits the arm where it attaches to the transmission as shown in photo #1.  Does anyone know why this happens on some tractors and not others?  Is there a way to fix it without grinding something down?

 

Photo #2 shows my 1994 416H which has full linkage travel and can reach top speed.  I don't see an obvious difference between the two.

Bill, I have no idea what the difference is, besides the way they might be adjusted, but could you grind a relief on the cam plate to gain enough clearance to reach top speed?

[squonk 45,707]

Cam plate wears a groove in the eccentric cam. Replace both. and adjust. 

 

 

 

@76c12091520h

 

Edited 11 hours ago by squonk

[kpinnc 17,434]

3 hours ago, squonk said:

Replace both. and adjust. 

 

 

I was going to suggest the same thing. Something about the orientation of the eccentric in that first picture just doesn't look right. 

[Bill D 2,664]

27 minutes ago, kpinnc said:

 

 

I was going to suggest the same thing. Something about the orientation of the eccentric in that first picture just doesn't look right. 

I was thinking about that after I took the picture.  The tractor only has 166 on the clock, if it's accurate.  I do have a new cam and plate for it if needed.  I'll try adjusting the eccentric and linkage and see what happens.

[kpinnc 17,434]

4 hours ago, Bill D said:

was thinking about that after I took the picture.

 

Call me crazy (plenty of folks do), but the pictures make the lever body at the bolt look thicker on the one that makes contact. I'm assuming the washer on top is the same size between them... 

 

If I was going to grind something, there is alot more material at the pivot arm than the cam plate. And it wouldn't take much to give full travel if the cam eccentric isn't the problem. 

 

Edited 1 hour ago by kpinnc

[Bill D 2,664]

2 minutes ago, kpinnc said:

 

Call me crazy (plenty of folks do), but the pictures make the lever body at the bolt look thicker on the one that makes contact. I'm assuming the washer on top is the same size between them... 

 

Different size washer.  Thinking you're right about cam eccentric being indexed wrong.

Edited 1 hour ago by Bill D