Increasing 7410 loader lift capacity

finspop · Mar 21, 2013

Hello,

I have a 3910 4WD with the 7410 loader. It's a great machine and I love it. However, I'm slightly underwhelmed by the lift and breakout abilities of the loader. When I'm scooping into large piles of topsoil or other materials, I can overwhelm it pretty easily. It does have a fairly large bucket, but still seems as if it should do a bit better.

Does anyone know what sort of hydraulic pressure I should be seeing on this system and where to check it? Also, I assume I could adjust pressure by adding/removing shims?

Any advice? For what it's worth, the hydraulics otherwise seem very strong. 3 pt hitch is strong and fast, and loader speed is excellent. It's just the lift and breakout that seem weak to me.

Thanks!

TractorTech · Mar 24, 2013

The loader valve would have the relief, probably screw adjustment, if it is mounted on loader. Which valve do you have, loader mount or the tractor valve?
A long lipped or large bucket will inhibit breakout force. Also, if the packing is leaking, it would cause this without necessarily slowing the cycle times.

finspop · Mar 27, 2013

Thank you. Not sure which valve I have, but I'll look at it. It does have some leak down, so that might be a factor, too.

Overall, what a great machine. I just love the brute simplicity of it.

J_J · Mar 27, 2013

You need to know the relief set pressure on the FEL valve.

Install a hyd gage in a tee at the IN port of the FEL valve and check/adjust the pressure to about 50 to 100 psi below the pumps max pressure.

Here is your 3910 tractor hyd pressure.

Hydraulics:
Type: open center
Capacity: 12.1 gal [45.8 L]
Pressure: 2500 psi [172.4 bar]
Valves: 1
Pump flow: 7.7 gpm [29.1 lpm