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Thread: SEE - Cold weather hydralic issues

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    Quote Originally Posted by msharky007 View Post
    Trying to figure out why my down force is poor, the pump tends to emit a screeching sound when I try to plant it to use the backhoe.
    Is it the pump or the belt that makes the noise?

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    Quote Originally Posted by msharky007 View Post
    Has anyone tried and succeeded at increasing the down force? I tried to use the teeth on the bucket to break up some hard packed dirt, and it seemed to me to just float along the surface.
    Jay Couch (Couch Off Road) made some mods described on the SEE, HHMH, and HME thread some time back. You may want to look into finding that one.

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    Suggestions:
    1) Perhaps the military has used 15W40 engine oil in your SEE hydraulics. That could especially apply if the SEE is from 'down south'. The trend was to use one 'fluid' for everything, as the FMTV trucks had 15W40 in the automatic transmissions. Synthetic 10W oil or hydraulic fluid should solve your hydraulic problem.
    2) Be sure the filter in the front hydraulic reservoir is clean. A partially plugged filter will severely restrict system performance, especially if the fluid is too thick.
    3) the front loader runs on the front hydraulic system and that system has no bypass (on a normal 406 anyway). The belt is the weak link and squeals if the load is too high. Clean the belt and tension it to achieve better downforce (and lift force too obviously).
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    Quote Originally Posted by The FLU farm View Post
    Is it the pump or the belt that makes the noise?
    Sounds more like the pump.

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    Quote Originally Posted by msharky007 View Post
    Sounds more like the pump.
    I'd change the fluid, regardless of what's in there, if you haven't already. And like tennmogger says, clean the filter while you're at it.
    And check belt tension.

    I have a loader that's lame, like yours (but minus the noise), and one that works well. Haven't got around to figuring out what the difference is, other than that a restrictor/check valve is mounted in different locations between the two.

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    I built hardwood dry sorting machinery and had to help put up an 85' x 200' x 22' pole barn with this machine in January. It got terribly cold and the truck was outdoors at the site. Fluid would not flow at all and the pump cavitation might have destroyed parts if pushed.

    They had a large wood fired power plant to the kilns, nice and warm but a fair amount of moisture in the air. We pulled it inside and after a few hours I decided to see if the pump would even push the fluid (more like suck it in). It stopped the cavitation at low rpm so I let it run a while. It seemed to be doing okay, but the temp outside was below zero. After the frost that first formed on the heavy steel was long gone, the truck was still rather cold.
    I raised the boom in the building and immediately frost formed on the cylinder rod as it extended and I raised the boom. I saw it, but really didn't think about it too much. I layed the boom back down, retracting the cylinder. The frost was so hard frozen to the rod that the seals did not remove it going in and that frost cut the seals surface and gave me a bad main cylinder leak. I was forced to work putting up the biggest building I have set trusses in the worst condition...with a main seal leak that ran on me the entire job.
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    Anyone had any luck of removing hydraulic cylinder cap to reseal the unit? I can't get mine to budge. Steady pissing fluid

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    I made a feeble attempt on one cylinder some time back...and failed.

    Since getting the rod separated from the piston can be harder yet, I sense a trip to the local hydraulic shop coming up.
    I think there are three cylinders on the HMMH's crane alone that needs help. With the lack of a real winter, the crane has seen much use and the SEEs hardly any.

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    Quote Originally Posted by The FLU farm View Post
    I made a feeble attempt on one cylinder some time back...and failed.

    Since getting the rod separated from the piston can be harder yet, I sense a trip to the local hydraulic shop coming up.
    I think there are three cylinders on the HMMH's crane alone that needs help. With the lack of a real winter, the crane has seen much use and the SEEs hardly any.
    I'm going try a little heat on it this week, see if it will move.

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    You can always try a pipe wrench, but I consider that a last resort. As in "Good thing I have a spare cap, so ruining this one is no big deal".

    Come to think of it, a chain wrench might work and not leave the cap quite as badly scarred.

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