Question about Garden
There isa whining noise coming from under the cab on John deere 9420 tractor .J.D. Technician thought it was coming from one of the three hydraulic pumps under the cab. Oil level is OK.
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Posted on Jan 02, 2017
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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Posted on Apr 19, 2009
A very common problem with the GX series with Kawasaki engines. The carburetor 'inlet needle' sticks open and fills the crankcase with fuel. When checking the oil, it can be difficult to see the gasoline and the level appears to be OK. Remove the dipstick and smell the oil, you may detect a gasoline smell. Also, drain the oil, and you may find much more fluid than you expect.
The solution on newer mowers was to install an 'in-line' shut-off valve to keep the fuel from syphoning into the carburetor. The inlet needle and seat in the carburetor is NOT replaceable, so a new carburetor is the ultimate solution, but VERY expensive. Installing and using an in-line shut-off valve is more affordable.
Also, this situation is common when machine is transported on a trailer, as the bouncing causes the needle/seat to leak. When transporting, always turn off the fuel supply to the carburetor.
Posted on Nov 08, 2009
Locate voltage regulator above battery to the left as you sit on machine,its behind frame that supports steering wheel.Once you have found it use a light to shine on harness and follow the brown wire that leads into regulator.The plastic around that wire should not be burnt or showing any other color.The LX series machines had a problem with brown wire coming loose and causing the charging light to stay on.Remove plug from reg and use small screwdriver to clean out wire and work it a little so it makes good contact.
Posted on Nov 13, 2009
In regard to the problem - JD 4020 Row Crop Tractor; No power Steering
What was the problem and how did you fix it I'm having a simlar problem
Posted on Oct 09, 2011
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