Controlling speed of hydraulic question JM354

[crofutt]

Got 14 hours on my 354 now and is working good. But there are a few issues with the hydraulic system. The FEL works slow in my opinion. Got lots of power and all....just lifting or tilting the bucket take longer than I think it should. Then, the backhoe is just the oposite, all you do is breath on the levers and it "slams" in that direction. The hoe bucket seems about right, but all other controls are VERY quick. The stabilizers seem a little slow but who cares.

So, my questions are is it possible to control the speed (movement) of the hydraulics. Speed up the FEL and slow down the backhoe? Thanks in advance. Bill

 

[GuglioLS]

Unfortunately this is a common complaint about the Jinma Engine driven hydraulic pump flow rate with Front End loaders. The original pump design was only intended to operate the 3 point hitch. There is another pump available with a higher capacity but is not a direct replacement because of the solid hydraulic pipe routing and engine rotation. It can be done but you will have to make modifications to the higher capacity pump and tractor hose routing.

The two pumps available are CBN-E310R-L (10 cc / rev) and CBN-E314R-L (14 cc/rev)
The CBN-E310R-L is configured for Clockwise engine rotation while the CBN-E314R-L is configured for Counterclockwise engine rotation.

Another common complaint is the Chinese Back Hoe valve controls cannot be “feathered” for smoother / slower movement. Some may have solved this while others have just learned to live with it. I suppose you could install a hydraulic flow regulator and or replace all the spool valves but again it would require extensive hydraulic hose and routing modifications as well as educating yourself on the principals of hydraulics in order to do this yourself.

Here is a link as to how I got the CBN-E314R-L pump to operate on my 2005 354LE.

I have been thinking / planning on how to install an engine driven 8-10 gpm pump. But I am not there yet.

 

[JerryG]

There are reducer orifices that can be installed in the lines that will slow down the speed. You will still have the power you need but without the speed that you don't. All you have to do take the hose off and place the orifice in the end. I don't know if anyone has tried this on these backhoes or not.

 

[SPIKER]

I have the problem with fast moving hoe too: I simply lower RPM to about 1200 or less. which lowers pto speed and the hoe reaction speed it doesn't LUG the tractor either.

the FEL slow part not much I can help with thta one.

markM

 

[RonMar]

IRT the slow FEL, are the quick connects used in attaching the FEL making good contact. IE: are they seated deep enough so that the check balls inside are fully opened. Mixed and matched quick connects(chinese with another type) can have this problem, even to the point of killing the hydraulic pump. If you had a restriction here, this could lead to slow FEL operation.

 

[mark1]

I solved some of my speed problems with the LW-6 backhoe by adding reducers in the lines.
I took off the hoses to the boom cylinder and tapped a 3/8 16 thread in the cylinder pipes. then took a 3/8x16 set screw and drilled a 1/8th hole in it for both ends.(got to make sure you don't leave any metal in there from tapping the threads) The boom cylinder was the only one I thought was too fast,so that was the only one I did.Total cost $0.85 for 2, 3/8 set screws.It's best to start out with small holes and if it's to slow drill em bigger. /forums/images/graemlins/smile.gif