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Garden Tractors Discussion Forum

Case 444 hydraulic pump

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03-28-2008 04:53:30

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i just got finished putting back together my 444 after a engine rebuild and a tractor restore. but when i started engine and primed hydraulic lines with control valve back and forth , i dont get any forward or reverse at rear wheels. but when i put it on jacks stands to get the rear end of the ground, the rear end turns , seems like no pressure. is it the hydraulic pump, or is there something else i need to check or do, the resevoir is full of rotella oil.,i do not have the hydraulic lines hooked up on the lift control valve, the ports are plug off.

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Tom Arnold

03-28-2008 15:10:22

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 Re: Case 444 hydraulic pump in reply to chincha805, 03-28-2008 04:53:30  
This might seem stupid but did you forget to take the trans-axle shifter out of neutral and put it into either High or Low Range????

Other than that, you need to make sure that the pump is spinning, that the screen in the reservoir tank is not plugged, that all the clamps on the inlet hose are tightened down hard and that the reservoir has adequate oil.

If you are using the same pump, travel control valve and drive motor as you did prior to the engine rebuild and everything worked OK previously, then this can't be a big deal. There is no such thing as priming any part of the system. The reservoir feeds oil via gravity to the pump. If the pump is spinning then it will pump that oil throughout the entire system in a few seconds.

It does not matter if the lift circuit ports are plugged. That has no bearing on your problem.

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03-28-2008 23:24:40

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 Re: Case 444 hydraulic pump in reply to Tom Arnold, 03-28-2008 15:10:22  
Tom, it was in nuetral. i feel stupid. that's why this site has people like you, i appreciate your smarts, thanks for the help .

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Tom Arnold

03-29-2008 04:01:04

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 Re: Case 444 hydraulic pump in reply to chincha805, 03-28-2008 23:24:40  
Don't beat yourself up to badly. We've all been there and done that. LOL

All that really matters is that your Case is back together, running well and you're real happy with the results of your efforts.

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