8N hydraulics

(quoted from post at 10:40:58 12/17/14) My old 8N sat idle for about four years. I just got her running again but the lift arms won't lift. Any thoughts on what I ought to check?

I'm assuming it's time (more accurately, probably long past time) to replace the fluid. I've never done that. What is involved? What fluid should I use? Are there any other things I should do at the same time (short of a radical rebuild/overhaul)?

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(quoted from post at 11:29:55 12/17/14)

(quoted from post at 10:40:58 12/17/14) My old 8N sat idle for about four years. I just got her running again but the lift arms won't lift. Any thoughts on what I ought to check?

I'm assuming it's time (more accurately, probably long past time) to replace the fluid. I've never done that. What is involved? What fluid should I use? Are there any other things I should do at the same time (short of a radical rebuild/overhaul)?

Click to expand...

ere ya go:


First thing to check is the operation of the control valve which is located in the base of the pump. It cn be accessed by removing one of the inspection covers (guess that is why they call them inspection covers ;-) on the side of the center housing - right side cover probably the easiest. JMOR will probably post a picture of the valve showing proper range of movement. I would do that myself but I don't have his link handy :roll:

TOH

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(quoted from post at 12:55:55 12/17/14)
On a somewhat related note, when I change the fluid I know the manual calls for SAE90 but my local TSC carries only 80W-90. Will that work?

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(quoted from post at 15:31:27 12/17/14)
No, moving the arm does nothing. It was working fine before I had to park it due to a move. Now, nothing.

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