|
Seann
10-15-2004 12:47:58
|
|
Re: IH 175 crawler/loader spring on left rear in reply to Tim in Oregon, 10-15-2004 08:33:23
|
|
| |
Tim, I think what you're referring to is what's called the Hydrospring, I have one on my '69 150 IH loader and most of the IH Drott type loaders from the 60's and early 70's had them. It's a big shock absorber for the hydraulic system that dampens out the very high pressure pulses that can occur in the hydraulic system when heavy loads are moved up and down and the valve is suddendly opened or closed. For instance, if you have a full load of dirt with the bucket up (which weighs several thousand pounds) and then you lower the bucket quickly and then stop, the hydrospring will compress and absorb much of the shock, relieving a lot of the strain on the hydraulic circuit AND the loader frame (helping to prevent cracks/breaks). From what I've heard, they do tend to leak a bit, mine usually has a small amount of oil on the outside of it, especially after some hard use, but overall it hasn't caused me any problems. Plus it does have a big V seal in it that can be tightened up via a large adjustable spanner nut that is accessible through a horizontal slot on the bottom of the hydrospring sheetmetal housing (at least that's how mine is). You need a large spanner wrench, or simply fabricate your own out of steel stock. I've been meaning to make one for my machine to tighten it up a bit to stop the leak, but haven't gotten around to it yet. Also if you have a 4-1, there should be a little valve under the seat that you can turn on and off which leads to the hydrospring. This valve will shut the fluid flow off to the hydrospring and remove it from the hydraulic circuit. The only time you would want to do this is if you are dozing and/or grading (using the 4-1 dozer blade) and are not lifting loads with the loader. By turning the hydrospring off, you can achieve finer control over the dozer blade and less bobbing which might happen with the hydrospring on (although personally I see little difference when its on or off when I'm dozing/grading). Otherwise, you should leave the hydrospring on, as it helps protect the loader hyd system and frame. Good luck
|
|
|
