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PTO L8000 HELP!!

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Old Nov 30, 2010 | 08:53 PM
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PTO L8000 HELP!!

I just bought a 1995 L8000 and it has the a front pto hydraulic pump that runs off the harmonic balancer. When I hit the valve to raise the bed i realized there gauge was showing no pressure. I then checked and it was out of hydraulic fluid, I added 30 gallons and still no pressure. Has anyone worked on these? Is there a way to prime the fluid? There is a small allen head bolt on the top and when I removed it I felt a bit of air coming out so it makes me think maybe it is working but just not pulling the fluid out of the tank. Also there is a small leak in the seam of the hose. Anyone have any thoughts? I have tried a web search to no avail. Thanks in advance.
 
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Old Dec 1, 2010 | 09:09 AM
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From: CASA GRANDE AZ
is the pump turning , and what brand of pump is it ? you can add a small amount of air pressure to the tank to help prime and at the same time have that bolt your talking about removed to let the air escape !
 
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Old Dec 1, 2010 | 09:27 PM
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Pump turns.. Have no clue what kind of pump it is.. wish I could find out!
 
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Old Dec 1, 2010 | 09:28 PM
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There should be a pre filter on the line make sure its not clogged.
 
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Old Dec 1, 2010 | 10:21 PM
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From: CASA GRANDE AZ
Originally Posted by ford390gashog
There should be a pre filter on the line make sure its not clogged.
there could be a screen in the hydraulic tank and it would be where the suction line hooks into the tank , if so it would just unscrew !
 
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Old Dec 1, 2010 | 10:24 PM
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that small allen bolt on top of the pump , take it out and pour some oil into it till you can't pour any more in then put bolt back and start truck and see what happens !
 
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Old Dec 1, 2010 | 10:30 PM
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Originally Posted by cj06
that small allen bolt on top of the pump , take it out and pour some oil into it till you can't pour any more in then put bolt back and start truck and see what happens !
Started that today but ran out of time and had to get some other things taken care.. Will get back to it tomorrow. Thx Guys.. I will let you know what I find out.
 
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