Re: Hydraulic cooler

Posted by Hugh MacKay on December 02, 2004 at 04:25:46 from (209.226.247.133):

In Reply to: Re: Hydraulic cooler posted by gene b on December 02, 2004 at 02:34:15:

gene: You make a good point, basically what the IH dealer did for our 300 by adding that long cylinder type of resovoir was create cooling without presure, resovoir was about 6" diameter and about 4' long.

Our problems with 300 were progressive as well as two fold. when dad bought the 300, dealer installed the 31 loader from the H. Cylinders on the 31 loader had return line thus hydraulic oil supply was adequate. A year later dad traded loader for a 33A with hydraulic bucket and single action cylinders on the lift. Problem with this was, 300 would run out of hydraulic oil before loader was all the way up. Dealer changed lift cylinders to double action. It worked better but resovoir had to be right full, plus running as many as 5 manure spreaders from one loader tractor, the heat factor was a problem. You could get nasty burn marks on your arms reaching into tool box if you happened to touch hydraulic lines. Not serious burns by any means but they were uncomfortable.

After installing the added resovoir, it improved both problems. This was part of an evolution, none of that series of tractors had enough resovoir for hydraulics;100, 200, 300 or 400. Was fine if it was nothing more than rockshafts on the 100 and 200 or a single implement cylinder on a 300 or 400. Farmers were however starting to use hydraulics a lot. Lets face it 100 and 200 had an 8 pint hydraulic resovoir, that included pump and lines. I don't have the figures for 300 and 400, but as I recall not a lot more than 10 quarts. You add a loader to that with double action and hydraulic bucket, more than 50% of your hydraulic oil will be in loader at any given time. The system will now have 20 quarts.

By 1958 we started seeing transmission and rear end as hydraulic resovoir. Lets face we had come from a quite simple belly pump in early 50s. Before the decade was over we were pumping twice the presure and twice the gpm, and trying to do it with little more oil. Just part of the engineering evolution, we now know how to correct it, "MORE OIL", doesn't matter whether it be added cooler or resovoir, both give more oil.

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