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HI,

I have a 4700 with a 460 FEL and a 48 back hoe. If I have my paleet forks installed on the loader and a pallet loaded and raised and leave the loader in an up position for five minutes or less the forks start tipping. I have the same problem with the back hoe. I start working with the stabalizers lowered and after five minutes I am bouncing off the tires. I have had the dealer check for this problem but get the reply that the leak down rate is within the service manual specs. This was checked before the tractor was two years old and had approx. 250 hours. Is anyone else having this problem?

Cylinder leak down on 460 FEL and 48 back hoe
John Deere Tractors
Replies 22 Post by Andyw

Hi,

I just went through two cylinder rods on the bucket cylinder on my 48 backhoe which is just over two and a half years old. I was removing tree stumps in a 4 yo 8" dia. range. The first rod bent like a pretzel. I had to cut the shaft with a hack saw and destroyed the nut trying to remove it. I was quite suprized to see an indent in the rod from where it had jammed against the nut. I replaced the rod and nut and proceeded to remove more stumps. At stump number five the rod bent again. Now I am really pissed off. My dealer told me that JD would not warrant the first rod and that I had abused the back hoe. This back hoe has approx. 15 hours of use. I decided to call JD customer support and had a discussion with the Canadian service manager reguarding my problems. He stated that there is no problem with my aplication and this should not have occured. Now if you remeber earlier I said I cut the shaft off with a hacksaw. The material that the shaft is made from is very soft and appears to be Supperior Shafting. I purchased a length of hard chrome shaft and made up my own shaft. You will not cut this shaft with a hack saw. I feel this will solve the problem. I did this because I felt that replacing the shaft with a third JD part would end up with the same result. I was of the understanding that all cylinder shafts where made from hard chrome shaft. It does not appear to be the case with the JD 48 back hoe. I am still waiting to see if JD will do anything to back there product.

JD 48 Dipper cylinder
Loaders Back Hoes
Replies 35 Post by andyw