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Tool Talk Discussion Forum

flow meter

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gh-in-oh

01-08-2007 11:11:01




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Hello all,

I am currently trying to locate a hydraulic problem on my JD300. (hydraulics seem to very slow). I was just wondering if anyone has a flow meter (not real expensive) that they are happy with (brand name). In addition, where can i get one? I have found a few in northen tool that were about $300.00 Any information would be very appreciated. Thanks




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J Schwiebert

01-09-2007 03:16:31




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 Re: flow meter in reply to gh-in-oh, 01-08-2007 11:11:01  
How good are you at math? In the deere service manual I have Deere knows that you will not always have a flow meter and times are given for the cylinders. You need to charge the pump as was mentioned below. Now I have used an OTC hydra-sluth or what it was called when I worked for a dealer and later on I used Hedland flow meters. Where are you in Ohio? J.



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jdemaris

01-08-2007 15:02:41




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 Re: flow meter in reply to gh-in-oh, 01-08-2007 11:11:01  
I can't think of any hydraulic problems a 300 would have where a flow-meter would be necessary. We always had one in the shop but rarely used it. I've got two 300s that have the large 2.4 cubic inch pump in front, but I've seen other 300s that have the tiny little German pump like used in green 300s - i.e. 1020s. Regardless of which main pump you have, either needs oil feed to it. You can flow-check your transmission/feed pump by unhooking a line and running the oil into a bucket. Very easy. If a 5 gallon bucket fills in 60 seconds, you've got 5 GPM. The advantage to using a good flow-rater is the ability to check oil flow under pressure. Not necessary when checking the trans. pump. What specific problems are you having?

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Bob/Ont

01-08-2007 12:46:08




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 Re: flow meter in reply to gh-in-oh, 01-08-2007 11:11:01  
GH, if you have a fixed displacement pump you can tell a lot with a pressure gauge. Stall the circuit at full throttle and again at low throttle. Pressure should hold about 90% of full throttle reading or stall the engine on a good system. If all curcuits are the same take a look at the pump and the main relief valve.
Later Bob



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