You know how you kinda fall for something, then get it home and you start seeing "warts". Well tell me what you think about this.When I purchased my MF 135 not long ago, I had a 5' bush hog on the 3 pt hitch. I ran the hydraulics up and down, up and down, and up and down some more. No shudder, no shake, no problem! Even left them up for about an 1/2 hour, didn't move a bit. Today I pulled out some old fence posts (railroad ties) with a lifting boom. They were in the ground about 2 1/2' to 3' and had been there probably 20 years. If they were already very loose (rotted at the bottom), they popped right out. With the others, I would raise the 3 pt, the rear would squat a bit under the strain, weight would come off the front tires (never had the front tires off the ground though) and a "hammering" sound would come from the hydraulic gear box. I'd immediately go back down again, "hammering" would stop. Then back up "hammering" would start. Then immediately back down "hammering" would stop. Back up and post would finally pop out. This occured on about 3 of the 4 post I pulled. I had read on this forum where the hydraulics should be able to raise the front of the tractor off the ground. Mine won't! Takes the weight off, but will not get the front wheels in the air before the "hammering" starts. Am I asking to much (ie trying to pull up something that is too "heavy" or too much load)? What does the "hammering" mean. Does something need to be repaired? Is it serious? Is it expensive? Should I be using a lifting boom? Is my technique the problem? The engine and drive train appear to be in very good condition, the tractor starts and runs like a dream. Seems to have very good pulling power based on my snaking out some old dead logs today. I know the hydraulic fluid is not low, but unsure about the filter being clean. My service manual is on the way. What are your thoughts about my hydraulic "wart"? Thanks
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