jd555 hyd lines

capt747

New User
recently acquired a jd555 w/ back hoe not attached. on right side pedestal in operators compartment are 4 hyd lines, 2 of which are disconnected. cannot locate where they go, am thinking could this be supply and return for back hoe. any body have any ideas. Also, machine has been in shed for 25 years, looks brand new, has clean oils, but I know it has not been started for at least 20 yeaRS ANY RECOMENDATION on best way to start r up. thanks for help
 
As far as the lines go what your describing sounds right for the lines going to a backhoe attachment. As far as start up, check the fluids and insure all of them are at the right level. Fuel wise I have seen machines run with diesel that old, especially when kept under a shed so no water could get in the tank, but it's worth at least checking/changing the filters before going too far. Once you know the fluid levels are find, and the fuel is fine, I'd turn the fuel off and spin it over for a few minutes to get the oil up into the engine's top end and insure everything had a good coat of oil before trying to start it. I can't remember if that machine has a manual shutdown lever, or a solenoid that shuts off the fuel. If it has a solenoid then your good to go, if it has any kind of mechanical shutdown, the next thing I'd so is make some way to positively shut off the air flow to the engine (like take the line off the air filter housing, etc to provide an opening you can close with a piece of board, etc). The reason for that is after setting that long the rack in the injection pump may be stuck in the wide open position giving you no other way to shut it down other than to cut off the fuel or air. Like I said if it has a fuel solenoid then it will shutdown that way, but without there is no guarantee beyond having am emergency way to do it. From there simply start it up, and cross your fingers that everything is good.

That all said, you might as well expect to see leaks around the main seals on the cranks, at the very least, from it setting that long. When Dad worked at an equipment dealer years ago he said they usually had leaks, and other minor problems like that, on any machine that had sat on the lot and not been run for any length of time. He said once they implemented a policy that they 'exercised' all of the machines at least once a month they never had any more problems.

Good luck.
 
CAUTION!!!! Before you even think about trying to start it, make absolutely sure the aux. lines for the backhoe are fully coupled together. If they aren't you will dead head the pump and could blow it up! The aux. lines allow the oil to make a complete circuit.
 

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