touch control ? lift acts goofey!!

[gutterman]

Hi all, a while back I had the top cover off and straightened all the bent parts,and replaced the rings,and cam follower pin,and adjusted it using the Zanes tool, it worked great for a couple months, then the touch control started falling (I had/have to hold it up by hand) I can feel it pulling down when I have a load on the 3 pt. if I let go the handle slams down. also here lately the lift only works when I lift the handle almost to the top, I removed the yoke and tightened the spring and messed around pushing and pulling the slide part of the control (seems like i have tightened the spring to much). I really dont know what to do now. should I pull the top cover and start adjusting all over? as I'm typing this I'm trying to think if the position control is on or off, and really don't remember which way it should be, (pls let me know, this time i will wright it on the tractor with a sharpie..hahhah) dang it would be bad if I messed around with it and all that was wrong was if my nephew or myself changed the lever. any idea what I should do first, other than check the position control lever?? would like to try plowing soon and need to deal with this..thanks
 

[ZANE]

If the friction disc is still usable you can just tighten the nut to increase the drag on the touch control handle.

The mode lever has to be "UP" for position and down for draft.

Zane
 

[gutterman]

thanks zane, I checked this morning and it is up. is that the way it should be for normal use? when I'm holding the lever I feel it pulling really hard at times, and the lift wont stay in place, its easing up all the time. is there something that i didnt get adjusted right? when I first adjusted it, it started to lift seems like about half way up when I moved the touch lever up, now its just about at the top.thanks
 

[souNdguy]

as zane asked.. hows the friction disc?

is it doing anything?
 

[mike-ga]

Zane, Do you still accept PayPal for your jig to adjust the 8n lift? What"s your info?
 

[gutterman]

[souNdguy]

you don't know about the condition of the friction disc?

i'm sorry.. but if you are blind.. you may need help using the tractor.

the friction disc is a couple inches from your hand when it's ont he 3pt lift lever.

do you have a service manual?
 

[gutterman]

[JMOR]

[gutterman]

[ok so the friction disc should be checked out, so now what about the lift not going up until very near the highest point of the handle? what im saying is when I first put the top cover back on the lift would start to move up around the center of travel on the touch control, now it starts probably 3/4 way up. and the lift eases up all the time like it did before I "fixed" it, it wont stay in place at all really. Is all this caused by the friction disc?
 

[JMOR]

[gutterman]

[ sorry i should have included that in my post, Yeah its a 8n. I wish I knew how to word it to make it understandable, I'll try again, hopefully this will help. When I have something (mower,boom pole,etc) on the 3 point. lets say I have it lifted,motor running, pto on, position control lever is up ,and get off the tractor it stays up sometimes, other times without warning it slams down. then the other deal about not starting to lift until very near the top of travel on the "lifting handle" (sorry i dont know the proper name) and finally when carrying it eases up while im holding the handle to keep it from slamming down...Hey thanks for trying to help.
 

[souNdguy]

well.. you may need to get some outside help on this on.

maybee your wife can come out and look and see if the cork disc is there and in compression with the spring and nut and touch control shaft plate.
 

[gutterman]

ok.. update on disc....wife say its fine......now what?
 

[JMOR]

"and finally when carrying it eases up while im holding the handle to keep it from slamming down.." The fact that it eases on up says to me that the cam/cam-follower mechanism is not doing its job properly. It is there to sense any downward drift & apply a 'correction' command to the pump intake valve to correct for the downward drift & return it to the original position.....not to raise it even higher than originally set. The continuing to rise situation sounds like it is operating in Draft control rather than Position control. This is a possibility if the linkage adjustments are no very close to correct. Why? Because there is very little dimensional difference between Draft & Position control taking over. One example is in the attached picture, shown in Position control. Notice the small gap on the sliding draft control swivel. If the setup adjustments were off in such a way as to have mode set to Position AND this gap is not present, then Draft control will take over even when you have it set in Position control. Not a lot of room for error. The second picture shows the problem, as here we are still set to Position control, but very clearly, the control arm is being positioned/controlled by the draft control link. Notice that there is no contact between the Position control mechanism & the contact pad on the control arm.........there should be ...and the gap at swivel (1st picture) should exist.