Loader boom cylinders uneven

[dadohead]

Everyone worries about an uneven load possibly bending loader parts like the boom arms, torsional support tube, or the bucket pivots. Those are hard to bend, but always a possibility.

Actually.... they're not that hard to bend.

Running stress tests on backhoes years ago, I was AMAZED at the differences in the stress generated between a pro operator and an amateur (like me) doing the same load cycle. You THINK you're smooth and being easy on the equipment until you look at the stress curves. Ha!... FULL of spikes.

Given that the machines we own are fairly light duty, the loader frame is especially vulnerable, and few of us make a living using them... a loader is not that hard to tweak. Hopefully the OP just has a mounting issue. JMHO

 

[Seven Gables]

My thoughts on the issue is there’s two possible causes. First is the cross tube is bent/twisted as others have suggested. OP however doesn’t feel there’s been any misuse to cause this. Second possibility I think could cause the uneven extension of both cylinders is the right side piston seal is shot causing a unequal force of the two boom cylinders.

 

[4570Man]

Second possibility I think could cause the uneven extension of both cylinders is the right side piston seal is shot causing a unequal force of the two boom cylinders.

The cylinders are just plumbed together with a T and don’t have flow dividers. If one cylinder is bleeding off pressure it will make both sides equally weak.

 

[Seven Gables]

The cylinders are just plumbed together with a T and don’t have flow dividers. If one cylinder is bleeding off pressure it will make both sides equally weak.

The pressure in both cylinders will be equal in both cylinders because there plumbed together. The cylinder with the good seals will convert this equal pressure into more force than the cylinder with bad seals .

 

[4570Man]

The pressure in both cylinders will be equal in both cylinders because there plumbed together. The cylinder with the good seals will convert this equal pressure into more force than the cylinder with bad seals .

Equal pressure in both cylinders will make equal force from both cylinders. If the leak was bad enough there wouldn’t be any pressure and you wouldn’t have any lift from either cylinder.

 

[Seven Gables]

I see what you’re saying now 4570 .

 

[Fallon]

Have you checked tire pressure? Not likely, but the the machine could be a little off & you are only noticing it on the loader. It would be the rears not the fronts as they are mounted solid. The pivoting front axle provides no stability & everything comes from the rear.

Not ruling out the loader being tweaked, but easier to check & remedy.

 

[Saucymynx]

If the gland nut threads were stripped the glands would blow out of the end of the cylinder. The loader cylinders have no form of synchronization anyway. You should stick to giving advice on subjects that you have the slightest idea of what you’re talking about.

Why do you have to be such a jerk about it? Have you not ever made a mistake?

 

[Fallon]

Why do you have to be such a jerk about it? Have you not ever made a mistake?

Because spreading blatantly wrong information about something you don't understand is bad. Speaking alternatively while being ignorant is bad. Doing it to people trying to honestly trying to learn is worse.

 

[Ken P]

Thanks for the reply. I did try to shove on the bracket of the cylinder that is further out, and could only manage to push it in perhaps a 1/2 inch, and after I release the pressure, it moves right back out.

Given how cold it is, I may not be able to properly mess around with this until spring. I will try to take some pix to post.

Appreciate all of the responses and time to post them.

Ken