Hydraulics Question

[NCMau]

The left ram cylinder is moving slower than the right one. At the moment the loader arms are in not place but the cylinders are connect to the hydraulic hoses and secured to the frame. Before I start disconnecting hoses for pressure readings, I do have a basic question:
If there is no load on the cylinders, is it possible that the right one, which has a shorter hydraulic connection to the control valve, would come up faster than the left one?
The left cylinder just had a packing job done. I reversed the hoses at the valve ports with no change.
The loader is operated by the belly pump through a selector valve and it was pressure tested not long ago. The pump is good. The hoses were also replaced. There are no line obstructions.
The fluid was changed recently, but it is low for operating loader also. According to the book, it should be 8 gal. Now I have 5.
As soon as I recuperate from a temporary injury I値l buy a bucket. I am assuming that the low fluid could be causing the left cylinder to go slow??? In couple weeks I should be able to mount the arms and the bucket in place and put a load.

 

[AKKAMAAN]

The left ram cylinder is moving slower than the right one. At the moment the loader arms are in not place but the cylinders are connect to the hydraulic hoses and secured to the frame. Before I start disconnecting hoses for pressure readings, I do have a basic question:
If there is no load on the cylinders, is it possible that the right one, which has a shorter hydraulic connection to the control valve, would come up faster than the left one?

This is natural if there is no load on the cylinders, it is impossible to have two non synchronized cylinders to travel the same speed....The problem will disappear when FEL is installed....IF NOT...
YES, it is possible, flow goes to the lowest resistance first....so if one hose/line is shorter or the other one have kinks etc, that can make a difference, especially if the FEL frame work is not rigid and allows flexing

Do not forget to consider the return back pressure part from cylinders, that's resistance too....check for restrictions...maybe there is a oddball restrictor adapter on the slower cylinder....that will force flow into the other cylinder

The left cylinder just had a packing job done. I reversed the hoses at the valve ports with no change.
The loader is operated by the belly pump through a selector valve and it was pressure tested not long ago. The pump is good. The hoses were also replaced. There are no line obstructions.
The fluid was changed recently, but it is low for operating loader also. According to the book, it should be 8 gal. Now I have 5.
As soon as I recuperate from a temporary injury I値l buy a bucket. I am assuming that the low fluid could be causing the left cylinder to go slow??? In couple weeks I should be able to mount the arms and the bucket in place and put a load.

this is definitely not a problem in pump, fluid or control valve, this is a problem to be found from that point, the common hoses get split into the two for each cylinder....

Will this behavior the same if you have a heavy load in the bucket??

 

[Transit]

It may simply be in need of breaking-in and some trapped air. Complete the install and exercise the piss out of it.:thumbsup:

 

[J_J]

How did you measure the flow, and at what rpm?

 

[NCMau]

This is natural if there is no load on the cylinders, it is impossible to have two non synchronized cylinders to travel the same speed....The problem will disappear when FEL is installed....IF NOT...
YES, it is possible, flow goes to the lowest resistance first....so if one hose/line is shorter or the other one have kinks etc, that can make a difference, especially if the FEL frame work is not rigid and allows flexing

Do not forget to consider the return back pressure part from cylinders, that's resistance too....check for restrictions...maybe there is a oddball restrictor adapter on the slower cylinder....that will force flow into the other cylinder

this is definitely not a problem in pump, fluid or control valve, this is a problem to be found from that point, the common hoses get split into the two for each cylinder....

Will this behavior the same if you have a heavy load in the bucket??

Thanks. I guess I'll be able to put the loader back on in couple of weeks and find out how it acts with the load.

JJ. No I did not measure the flow. I just measured the pressure and was okay, and also the back lift works great.

 

[J_J]

I am sorry, that was my mistake. I thought you had 8 GPM's, and now you had five. I now see that that is the capacity of fluid in the tank. Missing three gal should have an impact on your system.

 

[wdchyd]

The left ram cylinder is moving slower than the right one.
The left cylinder just had a packing job done. I reversed the hoses at the valve ports with no change.

Left cyl packings are new and tighter.....With cyls detached at the bucket does the right cyl twist easier than the left......if so then the packings are just tighter.....normal......