John Deere 2 Cylinder Power Steering Pump Rebuilding
We have been rebuilding John Deere Power Steering Pumps and Steering
Control Valves for a couple of years now.
Many of these pumps have bad shafts due to spline wear or broken key
inside the drive gear. These pump are the main cause for loss of
pressure and can stop working suddenly. Sometimes the spline end from
the governor are completely worn out and the fan blade will either not
turn at all or you will see the fan blade skip. The drive coupler is
also a culprit and can cause the same problem. The front seal area
of the shaft should be like brand new. Otherwise the pump sucks in air
causing the fluid to blow out the breather dipstick. Not all
dipsticks have a breather, but the oil will become foam because of the
air. Be sure to use the proper oil also. Many folks make the
mistake and use 303 hydraulic oil. The OEM style oil is
a thicker, gear lube and is a must to have proper steering.
There are two different styles of power steering pump on these tractors.
The early style has the pressure regulator on the side of the power
steering pump. The later tractors have the pressure regulator on
the steering column.
If you change the style of pump, you must also replace the control valve
on the steering post.
Give us a call or drop by. We will be glad to assist you with your power
steering needs on your two cylinder John Deere Tractor.
These pumps are on John Deere 50, 60, 70, 80, 520, 520, 530, 620, 630,
720, 730, 820 and 830 tractors.
If your pump is in need of repair, you can
ship it to us or you can drop it off.