SOURCE: system creeps down even when tractor is operating.
There are 2 potential problems -
1. Leaking spool on the control valve - rebuild the vale.
2. Cylinder blow-by. Disassemble piston and replace the seals.
To test if its the cylinder - retract the cylinders all the way... remove the hoses on the blind end (non rod end) of each cylinder, and again pull the valve to the retract position.
If fluid continues to pour out of the cylinder - the piston seal is damaged, and the affected cylinder must be repaired.
To test if the valve spool is faulty - disconnect the a and b ports just after the valve. Turn on the system and check for seepage from the disconnected lines (without moving the lever).
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SOURCE: John Deere 1020 Weak 3 point hydraulics
I would suggest you find a JD dealer and buy a manual if you want to do the maintenance yourself. You can also do a Google search and find manuals.
I would also suggest you completely drain the old hydraulic fluid and replace it with new fluid and a new filter if it has not been serviced any time in the recent past.
The symptoms you describe can be low fluid and/or a clogged filter. If you or anyone else has run the tractor too long and it has low fluids and/or a clogged filter, you can damage the hydraulic pump and that can get costly.
SOURCE: 3020 carburetor ? john deere gas tractor, 3020
those carbs are real simple you will not have any problem
SOURCE: I have a John deere 317 tractor that does not start.
We will be testing for voltage to the points, coil, engine to tractor wiring harness, ignition switch
Tools needed:
volt meter to read 12 volts, or test light
1) with the points open: is there voltage at the connection wire at the points
If yes; adjust points to .020" and try to crank engine and check for spark
*** you may want to determine if condensor is connected to this wire also
if no
2) check point side (neg or - ) of coil for voltage
if yes, engine should start
if no
3) check for voltage at the + side of coil
If yes, coil is bad
if no
4) check wire connector from engine to frame wiring harness
if yes; engine should start
if no
5) check wiring on the back of ignition switch
if yes; engine should start
if no
6) check that ignition switch RED or BATTERY supply wire has voltage
if yes; switch is bad
if no
7) check supply wire and circuit breaker connected to the battery side of the solenoid
if yes; engine should start
if no; circuit breaker could be at fault or wire connector at battery supply
I’m happy to assist further over the phone at https://www.6ya.com/expert/rolandw_c013176d62ee17ae
SOURCE: need the pto to work on a 6300 john deere tractor
If you have tried a new sensor and a new switch the the next step is to replace the pto solenoid valve.If that proves fruitless then the b.c.u.needs to be replaced or bypassed.The solenoid valve will cure your problem 90% of the time.If that does not work,let me know,i can tell you how to by-pass the b.c.u..
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