tractor shakes vigorously when implement is lifted by the 3

rickv3

New User
Hi guys need help, have a 1710 ford compact tractor 1983, 4x4 diesel. When I use the 3pt hitch for implement in the raise position the tractor shakes vigorously, when the implement is raised and I close the flow control valve the implement stays up and does not shake, I have removed the control valve assembly, the combination system relief and diverter valve manifold checked for any signs of wear or damaged and also replaced all the o rings any suggestions i'm out of ideas, any help would be appreciated thanks in advance

Rickv3
 

Shake front to rear while lifting or trying to hold up something?

Or engine start to run rough?

I dont know the compacts, my first guess is lift is shaking dual to bad control valve, bad lift piston ring, or bad pump valves??? But again, just a wild guess..
 
(quoted from post at 11:43:49 02/16/15) 3pt goes up smooth but tractor shakes?

Shakes when implement is stationary after lifting, does not shake from side to side, engine runs smooth, lift piston ok when raised shut off control valve and implement stays up and no shaking
 
Hard to figure out your issue, some of the stuff you are saying seems mutually exclusive. Is it really shaking,or engine bogging?
 
(quoted from post at 13:23:54 02/16/15) Hard to figure out your issue, some of the stuff you are saying seems mutually exclusive. Is it really shaking,or engine bogging?

shakes so bad you don't want to drive tractor with implement raised.
 
So the engine shakes while the hyd pump has a load on it, but when you close the valve and the pump goes to bypass it doesn't shake.

Seems like its air in the system, except that you said the lift raises smoothly.

If your pump mounts like mine does, it could also be a missing tooth on the pump or cam gear that runs the pump.

Since the lift holds fine with the valve closed its probably not in the lift cylinder itself.

My guess would be to look at the pump or those gears since the problem seems to only be when the pump is under load, broken spring, gear tooth, etc.
 
Another helpful bit would be, what were you doing with the tractor when it started acting like this, and what were you doing with it the last time before that, when it was acting correctly.

Was there possibly a fluid change in between when it worked correctly and shaking?
 

Engine runs normal, everything on tractor is normal for the exception when the implement is being raised and in the raised position, no oscillation, I am going to try to fully open and close control valve several times (speed of raise and decent speed for implement) also will remove dip stick to allow any air to escape
 
Pump should have a bleeder on the pressure side of the pump, air would only cause cavitation if its in the pressure side. But that would make the lift shake as its lifting as well. As long as its not low on fluid, air in the return side would not be a problem because the pickup for the pump would always be below fluid level.
 

Priour to this happening the tractor went through the ice on one side with rear snowblower backhoe lifted tractor out and must have put pressure on 3pt hitch, lift piston ok
 
Check that the lift arms come up equally when raising, if the backhoe picked up a bit unevenly it might have twisted the shaft inside the rear housing for the lift arms, that might be putting things in a bit of a bind, causing the shaking.

Soundguy or some of the others would probably know better on the smaller tractor, but my guess is you will have to pull the lift cover and do a good inspection on the parts inside.
 
To make the tractor shake violently I'd expect the engine missing, or the 3pt making a correction under load to make the shake. Absent those two......
 
(quoted from post at 15:53:00 02/16/15) To make the tractor shake violently I'd expect the engine missing, or the 3pt making a correction under load to make the shake. Absent those two......

Engine works perfect, only time it shakes is when lifting implement, or implement in air, at present I lift implement shut off control valve, shaking stops
 
Soundguy he said he had a backhoe pick it up when it fell through the ice, I'm unfamiliar with the smaller tractors, but could he have stripped some of the splines on the shaft or the arm on the cylinder arm in the rear housing? If so that would make some sense as it would be 'slipping' and possibly jerking under a load? and or possibly broken that shaft and the jerking be from trying to pick up an implement with basically one arm?

I don't know how 'beefy' those parts are in the smaller tractor, but assuming everything smaller than in a larger tractor, that might be the weak point if it was picked up by the lift arm?

I'm asking as much for my education as trying to help him figure out where to look.
 
(quoted from post at 17:42:47 02/16/15) Soundguy he said he had a backhoe pick it up when it fell through the ice, I'm unfamiliar with the smaller tractors, but could he have stripped some of the splines on the shaft or the arm on the cylinder arm in the rear housing? If so that would make some sense as it would be 'slipping' and possibly jerking under a load? and or possibly broken that shaft and the jerking be from trying to pick up an implement with basically one arm?

I don't know how 'beefy' those parts are in the smaller tractor, but assuming everything smaller than in a larger tractor, that might be the weak point if it was picked up by the lift arm?

I'm asking as much for my education as trying to help him figure out where to look.

I don't think anything is stripped because I can use the pto whenever I want I just finished doing a trail to the ice hut approx.: 1/2 a mile long, so when I raise snowblower it shakes so I turn the control valve under the seat off and no more shaking, open the valve slightly the implement goes down
 
(quoted from post at 18:44:26 02/16/15)
This tractor 1710 ford 4x4 diesel 27hp is pretty beffy

The tractor was picked by bucket to bucket, and I think it forced on rear snowblower when it was lifted
 
Please let us know what you find when you get the top cover off and check out the internals.

Something isn't right, its always good to share info like that when we can nail it down so we can help the next guy.
 

It will have to wait till Apri to remove lift coverl, we are still getting a lot a snow and require snowblower, but once done I will let u know thanks
 
If it has draft control it could have messed up the linkage under the cover possibly. The draft control doesn't like a hard hit (like when the tractor broke through the ice), or lifting it out by the 3 point especially if it was hard to lift out.
 
(quoted from post at 15:56:19 02/17/15) If it has draft control it could have messed up the linkage under the cover possibly. The draft control doesn't like a hard hit (like when the tractor broke through the ice), or lifting it out by the 3 point especially if it was hard to lift out.

It has draft control had the lift cover off did not see any damage, replaced all the o rings from the control valve, the only thing I did not check was the shaft for the 3pt hitch arms and the shaft for the lift piston
 
It could have bent, or moved something just enough that it cant be noticed just by looking. The only way to know for sure is to check/measure all the adjustments of the linkage under the lift cover. On some a little change can make a big difference.
 
(quoted from post at 19:13:19 02/17/15) It could have bent, or moved something just enough that it cant be noticed just by looking. The only way to know for sure is to check/measure all the adjustments of the linkage under the lift cover. On some a little change can make a big difference.
,
I guess I only have one option, I will remove the lift cover again and check with more accuracy but this will have to wait till April once the snow has passed, and then I will let everyone of my findings thanks to everyone who commented on this post
 

with tractor off and impliment disconnected... can you lift the 3point by hand? smoothly?? no binding?
 

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