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Re: Case 446 hydraulics
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Posted by Ebbsspeed on June 27, 2007 at 08:31:32 from (75.43.30.154):
In Reply to: Case 446 hydraulics posted by Mike McPhillips on June 27, 2007 at 08:01:09:
Recommended fluid is straight 30 weight motor oil, although some do use a multi-grade motor oil in them. The hydraulic pump is behind the motor, basically right under the battery. If you follow the large hose coming out of the bottom of the hydraulic reservoir around the right side and on to the back of the engine, you will see it connects to the pump there. As far as bleeding, I've never had to do that when I changed fluid, just keep the lid off the reservoir, let the tractor idle, and cycle the speed and lift controls a couple of times. If you've ruined 3 pumps in 4 years you are either using the heck out of this thing, abusing the heck out of it, or have major contaminants in the hydraulic system. There is a coupling between the engine and pump called a lovejoy coupling, which consists of a pair of round disks with a set of drive dogs on each, with a rubber flex coupling betwen the two. If this thing is broken your pump will not turn. If you're ready to give up on this machine, I might be interested in taking it off your hands.
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