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I have a JD4300 with a 47 back hoe. Last week it blew a hydraulic hose and when the dealer replaced the hose he cut off the nylon sleeve that the hoses run through at the bottom of the boom. He replaced the nylon sleeve by using a couple of small plastic cable ties to hold it on. Seems like a temporary repair at best to me. I would have threaded the new hoses through an uncut sleeve since I'm looking for maximum protection for the hoses. I've had one hydraulic oil shower and I'm not anxious for another.Is this the normal way to repair hoses? Has anyone had a similar experience and how did your dealer handle it?Frank

Nylon sleeve on JD 47 back hoe
John Deere Tractors
Replies 2 Post by Frank J. Knight

Sounds like a problem that is similar to what happened to me when I first tried to remove my backhoe. I have a JD4300 with a 47 backhoe but according to the manual the setup is similar. First remember that you must disconnect the backhoe hydraulics and reconnect the tractor hydraulic line to get the rockshaft to operate. It also takes 10 or 15 seconds the hydraulics to "catch up" since the backhoe holds the rockshaft in almost the full upright position. It is very easy to put the hydraulic system over relief when lifting the backhoe. The manual says to kill the engine if your going to be over relief for more than 10 seconds. What it doesn't say is how you know that you are "over relief"? You can hear it when the idling engine starts to noticeably lug. I haven't found that to be a problem since once things were adjusted correctly it only takes a few seconds to get the pins in or out.

That brings me to the real problem. The first time I tried removing the backhoe I discovered that the dealer didn't have the L-pin alignment adjusted correctly. What I ended up doing was reconnecting the backhoe hydraulics and using the stablizers to lift it enough to loosen the pins. Then reconnect the tractor hydraulics to use the rockshaft to lift and lower. Be very careful the backhoe is heavy. Once I got it off I spent the next hour readjusting the L-pins until they slid in and out easily with the rockshaft all the way up. Now it is an easy job to remove or reinstall the backhoe.

Frankj

Rockshaft arms not working
John Deere Tractors
Replies 5 Post by Frank J. Knight