Posted by RetiredMiner on June 13, 2013 at 08:32:19 from (126.96.36.199):
I'm having problems with lift cylinder packing blowing. Cylinders are early version self-leveling type. Two schools of thought from my buddies. First is that the hydraulic fluid is softening the packing materials (the white nylon ones soften and turn pinkish red like Dextron). I have been using Dextron for 30+ years with no problems, but recent overhaul did not last but a few hours. Second opinion I got was that the packing stack is in backwards. Replacement kit I got has stack of 8 packing rings, but no instructions which end of stack goes toward the lift pressure side. I'm looking for any help I can get from someone with real hydraulic experience.
Can provide some pictures of the blown packing on the shaft, and the new packing stack. This is first time blog for me so will need some help I you want them. I have all the books etc, and lot's of experience with this machine, but this problem has me stumped.
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