Re: OT. How much power do hydraulics really take?


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Posted by David Sherman [216.18.131.154] on Sunday, February 21, 2010 at 13:29:56 :

In Reply to: Re: OT. How much power do hydraulics really take? posted by TGP (IL) [205.188.116.76] on Sunday, February 21, 2010 at 13:20:37 :

Are you saying the pump should pump even with the engine at fast-idle speed (1000 rpm max)? That makes me think it is indeed worn, which would be no surprise with all the water in the system. The cylinders and valves all hold tightly, though. On the other hand, maybe it's just the lack of a real governor that's making the engine slow way too much when the throttle is set low. I have some 1-barrel velocity governors, but I suppose a big holley carb needs a belt-driven mechanical governor. On the other hand, if they built it this way, with no governor (not sure they did), then it's probably good enough as is.

There is no sump filter. I found the base of it screws onto the return line in the tank, but the body of it was missing. I figured whoever added the spin-on filter in the return line took the sump filter off.

How would I find the hydraulic requirements of the boom/bucket manufacturer? This thing is 30-40 years old and I don't see any manufacturer's data plate on it, except one that says to use "Texaco Aircraft Hydraulic oil BB", which I found out is super-expensive non-conductive fireproof stuff that's around $150/bucket. Since I'm not using it around high-voltage lines, I just used the standard #46 oil that's $30/bucket at costco. Given that the filter blew out a second time and dumped the first oil change on the ground, I think the system is pretty well purged now.



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