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Message: <blockquote data-quote="bob@hyd" data-source="post: 3322" data-attributes="member: 530"><p>Hi Jim, I've tried many different rpm's. Doesn't seem to change anything. Also checked the tire pressue. Put them all up to spec's. One thing that I've noticed, is when I'm running it the hydrolics don't make an even whine. They sound like they get into a surging mode and that's when the trouble starts. The whine gets loud/soft, loud/soft and so on. Then it starts to buck forward and back. Tough to stop it. From the whine in the hydrolics I'm wondering if the fluid is low? I'll be checking it tomorrow. It had a leak on the grappler ram. I've fixed it but haven't checked the fluid. Don't know how to check it. Haven't found a dipstick or a sight area. Thought I'd just start putting fluid in and see if that helps. Any ideas on if low fluid can cause problems like this? Like I said even the pedals are touchy. Thanks, Bob</p></blockquote><p></p>