arizonian needing help with a rare skid steer

[liljohnuser]

hello i am from apache junction arizona and i am in the process of replacing my control valves on my loader which is a JLG LJ500 "little john" which is a stand on skid steer. I cannot find any info on this and the manufacturer doesn't support it at all. If any one can help please contact me my main dilemna is a decent replacement directional control valves for its movement any help is greatly appreciated



thanks
tim

 

[J_J]

Take a look at this joystick valve and see if it will work for you.

Surplus Center - 2 SPOOL COMPACT 10 GPM JOYSTICK CONTROL VALVE

 

[Briana03]

Welcome to TractorByNet!

I moved your thread to the Construction Equipment forum.

 

[Gordoninvt]

This seems to be a very common problem with these machines.
#1 The Little John does NOT use "Hydraulic oil" for it's hydraulic supply. Rather it uses SAE 10w30. This was found by a member of my little_john_rocks yahoo group in the troubleshooting section of the manual I set him up with. It reccomends that if you have low forward back moving power to switch from the 10w30 to 10w40. I changed mine twice before finding out I was using the wrong oil.

#2 From my personal experience chain tension plays a role in power at the wheels. The manual shows proper deflection along the bottom most run of chain as being only 1/4" Since the chain changes direction so many times I am convinced it makes a huge difference if your chain is very loose. More power with both wheels turning at the same time rather than the chain binding.

#3 JLG sold to another company shortly after LJ was built and the new owners concentrated on the big lifts.
The company that does at least try to help is Manitex. So far no luck but they will know the machine.

 

[Xfaxman]

hello i am from apache junction arizona and i am in the process of replacing my control valves on my loader which is a JLG LJ500 "little john" which is a stand on skid steer. I cannot find any info on this and the manufacturer doesn't support it at all. If any one can help please contact me my main dilemna is a decent replacement directional control valves for its movement any help is greatly appreciated

thanks
tim

What is wrong with the valves?

 

[Bonsainorm]

I am getting ready to change the fluid and filter on my Little John, can you tell me what the capacity is for these machines? Also, do you have an opinion as to whether it is better to use a synthetic blend or just normal motor oil for the hydraulic system.

This seems to be a very common problem with these machines.
#1 The Little John does NOT use "Hydraulic oil" for it's hydraulic supply. Rather it uses SAE 10w30. This was found by a member of my little_john_rocks yahoo group in the troubleshooting section of the manual I set him up with. It reccomends that if you have low forward back moving power to switch from the 10w30 to 10w40. I changed mine twice before finding out I was using the wrong oil.

#2 From my personal experience chain tension plays a role in power at the wheels. The manual shows proper deflection along the bottom most run of chain as being only 1/4" Since the chain changes direction so many times I am convinced it makes a huge difference if your chain is very loose. More power with both wheels turning at the same time rather than the chain binding.

#3 JLG sold to another company shortly after LJ was built and the new owners concentrated on the big lifts.
The company that does at least try to help is Manitex. So far no luck but they will know the machine.

 

[stillcopper]

You make mention to a manual. So they do exist. Any idea where we could obtain a manual? book or digital format, prefer pdf. Our Little John had a rough patched up life before we got it so needs some TLC.
Appreciate any help on this,
Robert