M816 Hydraulic leak

[halftrack]

OK,

Here's the deal. I have a hydraulic leak (bad, 1 week and the whole reservoir is drained) coming somewhere from the center of the turn table. When I look under the truck everyting is wet or damp with hydraulic oil so it is hard to pin point anyone spot. I want to say that it looks like it is coming from the little gear box under the turntable where the pto shaft goes, however I don't believe this is directly in contact with the hydraulic oil in the center hydraulic pump thats above it. Does anyone have any suggestions on what it might be? Its not the hoses and not the hydrualic rams on the boom for sure. I had to replace that coupling in the center before, but I didn't think that is filled with oil.

 

[Armada]

Can't help you with the leak Jason, but damn that's one nice looking M816! Halftrack too, from what I can see of it.

 

[devilman96]

I would suggest cleaning it up and possiable getting your hands on some hyd dye to be used at a heavy rate in the system. Spend the better part of the day checking and re checking when you add it... This will narrow down the issue... Being that your leak is static you can also try pressurizing the tank with air and watching... This will get some flow going to actually "see".

 

[AMGeneral]

Sounds like your bottom pump seal has went kaput.

 

[AMGeneral]

Either the bottom pump seal or the O ring where the suction hose attaches to the pump has failed.

 

[halftrack]

Thanks

Thanks for the tips. Under the boom I go....