843 hyd pressure issue/charge light

[la350]

I have a mid 80's 843 that I'm having some problems with and am hoping some of the veterans here can help. Here is the timeline on this problem:

I bought it a few years ago and have only put 10 or so hours on it. It had a rattle or hammering on the left side when the joy stick was moved.

Left side went dead, right side worked fine.

I pulled the left side motor off, removed the hoses off the right side hoping to relieve pressure to make it easier to winch onto a trailer.

Parked it for 18 months.

Recently checked with Bobcat, they said to switch motors side to side to see if it was a motor problem. Did that. Power to bucket but no power to either side wheels now.

Noticed that the charge light on the dash panel had never glowed while I owned the machine. I found the circuit and found that the wire was not on the terminal. The hyd charge light stays on constantly when the rig is running.

If I accidently switched the hose positions at one or both pumps, would that cause this problem? Seems like that would just make the wheels turn opposite the normal joy stick position.

Also, if the bronze filter in one of the blocks was plugged (or hyd filter canister), would that allow bucket movement but not wheel movement?

Any suggestions where to go next with this issue? I just want to get it operational (at least get the right side working again since it appeared fine until I switched the motor and now neither side works!) and SELL it.

 

[SSdoxie]

I would guess both the left side pump and left side motor are dead. When you put left motor on right side and no drive there means motor is bad, and still no drive on left side with working right side motor on means left pump bad (unless the brakes were locked up when you did this test). Pump for loader is seperate from the left & right hydro pumps, is mounted to end of the hydro pumps but is seperate. Charge pressure light staying on with no drive on one side indicates 1 pump is worn enough it can't hold charge pressure.