1954 Jubilee lift problems

choes096

New User
I have a recently acquired Jubilee that I can not set the lift height on. The lift is all the way down when lever is at bottom stop. When I barely start to move lever up, the lift raises all the way. This happens in the first INCH of travel from bottom. I try to go down and set it, but then it relieves back to ground. So basically I have no level control for implements. It doesn't seem to matter if it is in draft control or implement control mode either.
 
There's a little lever under the seat that needs to be flipped in the other direction to get the control you need. Think you
access it with your right hand.
 
(quoted from post at 23:18:27 07/05/17) I have a recently acquired Jubilee that I can not set the lift height on. The lift is all the way down when lever is at bottom stop. When I barely start to move lever up, the lift raises all the way. This happens in the first INCH of travel from bottom. I try to go down and set it, but then it relieves back to ground. So basically I have no level control for implements. It doesn't seem to matter if it is in draft control or implement control mode either.
Any help would be greatly appreciated
 
That is the draft control lever if I am not mistaken. I have it in the up position, but have tried it both ways and still get the same problem.
 
(quoted from post at 09:30:46 07/06/17) That is the draft control lever if I am not mistaken. I have it in the up position, but have tried it both ways and still get the same problem.
es, & when you move it one way, it should feel like you are compressing or working against a spring and in the other direction, feel like you are releasing a spring or the spring is assisting you in moving the lever. Is that the way it feels?
 
(quoted from post at 10:29:41 07/06/17) Yes, that is correct
K, in that case, it would seem that linkage /position/draft toggle mechanism is intact. That pretty much leaves the cam follower (cam & pin) as the primary suspects, which is very common, as there is no lubrication there & after 60 years, metal wears when rubbed a lot. Pin is a press or drive out & new one back in & adjust as needed. Cam is generally still usable.
 
I have had lift off and the pin did not look out of round or scored or anything, but I don't know how much tolerance there is with that
 
(quoted from post at 11:02:16 07/06/17) I have had lift off and the pin did not look out of round or scored or anything, but I don't know how much tolerance there is with that
try not to make too many assumptions, so just to be sure, the pin in question is the one with red arrow & not the one closer to mouth of cylinder.....correct?

 
It has been a while since I had it off so I'll have to take it back off to be sure. You may be right, I may be thinking about the one next to piston.
 
Ok if you don't mind, how does the cam follower pin/cam function? Does it just ride on cam to open/close control valve depending on arm position and lever positio? I always like to know how things are supposed to work. I've been an HVAC technician for 20 years and I learned early on that in order to work on anything you need to know how it's supposed to work in the first place.
 
"I've been an HVAC technician for 20 years and I learned early on that in order to work on anything you need to know how it's supposed to work in the first place.".....that is me! It seems that we are a minority. Much as you say, the touch control is one input to the control arm attached to the valve and the pivot point of the arm can be the position control pad on the arm or it can be the draft swivel. Conversely, the touch control input point can be the pivot point & the position control pad can be the input or the draft control swivel can be the input. You set a position, it lifts to that level and afterwards if it tries to drop lower, the cam moves which in turn provides input to control arm & control valve commanding lift & it lifts until cam is back to the position it was in before the drop, thus moving control valve to the 'hold' position.
 
That helps. Thanks for taking time to help me understand. I will remove lift again and inspect as soon as I get a chance I am looking forward to fixing this frustration. I have horrible steering as well that I have to tackle next. Steering wheel has a lot of play, steering shaft rises a bunch when turned, pops inside, and hard as heck to turn.
 
The dowel pin that should come in contact with the piston when the lift reaches the top of it's travel doesn't seem to be where it can do so in the
picture????????? This dowel pin is what puts the lift in neutral when it reaches the top of it's travel so as to relieve pressure on the system. Other
wise the pressure relief valve will be opened.

Zane
 
(quoted from post at 20:52:17 07/06/17) The dowel pin that should come in contact with the piston when the lift reaches the top of it's travel doesn't seem to be where it can do so in the
picture????????? This dowel pin is what puts the lift in neutral when it reaches the top of it's travel so as to relieve pressure on the system. Other
wise the pressure relief valve will be opened.

Zane
hat is not this mans pix and Geo who originally posted this pix recognized all the wear and slop in that linkage. History, now.
 
Ok, I finally made time, years later to try to fix my position control. I took the lift cover back off and cam follower pun was sheared off. I bought another lift cover minus pump and put my pump on it. I set draft control first using 3/16" bar stock with position lever at top of quadrant. Then set for position control with 1/4" bar stock with lever at bottom of quadrant. Draft seems to be lifing in the last 1/4 of top of quadrant and drops arms when at bottom. Position control keeps arms up no matter what position of lever on quadrant. Any ideas??
 

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