Richard
Super Member
- Joined
- Apr 6, 2000
- Messages
- 5,001
- Location
- Knoxville, TN
- Tractor
- International 1066 Full sized JCB Loader/Backhoe and a John Deere 430 to mow with
Figured I'd start new thread Regardless... machine is a JCB 1550-B
Backhoe will drift to the passenger side of machine. Seems to drift more slowly now that the swing cylinders are rebuilt.
One stabilizer drifts down over time. Might take 2-days to go from full vertical to touching the ground. Perhaps a bit less.
Here's the setup to my question....
There is a valve block on the backhoe end that the wobble sticks are attached to.
I'm guessing that when all cylinders are attached to the machine and all the wobble sticks are in neutral, there is no pressure on any respective hose/cylinder (not counting the supply hoses)
Today, the machine sits with the hoses to the boom cylinder dangling. What if I turn the machine on and let it idle....or perhaps even rev it up some and watch those hoses.
Seems to me that as long as the wobble sticks are in neutral, there should be no active pressure/volume on the respective hose so I should not have any noticeable hydraulic fluid coming out of the hose. (I've seen how powerful the stream can be when you apply the lever)
If instead, I get a steady stream of fluid, that will suggest (confirm?) that the gaskets for that respective valve in the valve block need rebuilt?
Machine is 30 years old. I've owned it for about 12/15 of those years. Probably not unreasonable that they need some attention. I'm trying to figure out if there is a backyard test I can put them through to verify.
Though I've not touched them, a couple years ago, I did purchase what is supposed to be all the replacement gaskets for the valve block. After seeing one of the simple drawings of the schematic, it doesn't look like they are rocket science. I'm not inherently intimidated on digging into them to see what is in there.
That attitude sometimes, gets me into trouble!
So, would the "test" above have any validity and, if they need rebuilt, is that something a reasonably competent backyard guy can do or do you need special tools?
Backhoe will drift to the passenger side of machine. Seems to drift more slowly now that the swing cylinders are rebuilt.
One stabilizer drifts down over time. Might take 2-days to go from full vertical to touching the ground. Perhaps a bit less.
Here's the setup to my question....
There is a valve block on the backhoe end that the wobble sticks are attached to.
I'm guessing that when all cylinders are attached to the machine and all the wobble sticks are in neutral, there is no pressure on any respective hose/cylinder (not counting the supply hoses)
Today, the machine sits with the hoses to the boom cylinder dangling. What if I turn the machine on and let it idle....or perhaps even rev it up some and watch those hoses.
Seems to me that as long as the wobble sticks are in neutral, there should be no active pressure/volume on the respective hose so I should not have any noticeable hydraulic fluid coming out of the hose. (I've seen how powerful the stream can be when you apply the lever)
If instead, I get a steady stream of fluid, that will suggest (confirm?) that the gaskets for that respective valve in the valve block need rebuilt?
Machine is 30 years old. I've owned it for about 12/15 of those years. Probably not unreasonable that they need some attention. I'm trying to figure out if there is a backyard test I can put them through to verify.
Though I've not touched them, a couple years ago, I did purchase what is supposed to be all the replacement gaskets for the valve block. After seeing one of the simple drawings of the schematic, it doesn't look like they are rocket science. I'm not inherently intimidated on digging into them to see what is in there.
That attitude sometimes, gets me into trouble!
So, would the "test" above have any validity and, if they need rebuilt, is that something a reasonably competent backyard guy can do or do you need special tools?
.