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Posted by Tyler on Thursday, August 20, 2009:

In Reply to: 2840 JD hyd. problems posted by mike on Friday, December 28, 2001:

The first thing that you need to check is to see if you are getting fluid to the hydraulic pump which is crank driven. You would connect a guage to the pressure port on the pump to see if there is any pressure at all. There is a metal line inside the transmission case that supplies fluid to the pump. With you loosing all hydraulic power, you probably are not getting fluid to the pump or are having a pump problem. These lines simply push in to rubber grommets. I have had them crack on me as well. Also check to see that the line running to the front of the tractor has no blockage.The hydraulic pump is a piston type pump which works great, but can be very touchy when it comes to any contaminent in the oil.

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