Intermittent Failure

JimBoy · Jan 29, 2015

Hi all. I have a JD3720 with a backhoe. The last two times I started the tractor, the left stabilizer would not raise. The lever would not move in that direction. After about 20 minutes, it would work. What is going on?

/pine · Jan 29, 2015

water/ice in the system is a guess...

JimBoy · Jan 30, 2015

If that is the case, do I need to flush the entire hydraulic system?

J_J · Jan 30, 2015

JimBoy said:
If that is the case, do I need to flush the entire hydraulic system?

I would flush and use recommended fluid for your climate.

CJONE · Jan 30, 2015

Most of the time it is water in the spring cup or in the linkage system, not in the hydraulics. Your system would have to be in BAD shape for a valve spool to freeze up. Personally I have never seen it. Almost all the time it is the detent or spring center cup on the back of the spool [opposite the linkage hook up] that has water in it. CJ

tomcat7359 · Jan 30, 2015

CJONE said:
Most of the time it is water in the spring cup or in the linkage system, not in the hydraulics. Your system would have to be in BAD shape for a valve spool to freeze up. Personally I have never seen it. Almost all the time it is the detent or spring center cup on the back of the spool [opposite the linkage hook up] that has water in it. CJ

I totally agree with this....