JD 4020 brakes sticking

r54iowa · Nov 23, 2016

Was just reading mb58 post on his 3020. Am I having the same problem with valve?

tim s · Nov 23, 2016

Is the pedal sticking?? or is the brake staying on after the pedal comes up?/ there is a plunger in the top section of the valve that gets rusty when a boot fails which funnels water down into that area. When this happens you can disassemble the valve and clean and polish the plungers and replace the o-rings that come in a kit, it is a fairly simple operation,, if the brakes are dragging after the pedal comes up that side valve is leaking and can be replace after you open the body up,,I can re-build it here for you or help walk you through it if you want to try it yourself.

r54iowa · Nov 23, 2016

The pedal comes up and the plunger is up and the linkage is free, but brakes still on.

tim s · Nov 23, 2016

In that case, the valve is leaking through, you will need to take the valve apart to get to it,, maybe Jim will post a pic after bit,, when you take the top off 2 little down pins will fall out so be ready to catch them, they are part of the equalizer..

Tx Jim · Nov 23, 2016

Here's the 4020 brake valve schematic.

JD 4020 brakes sticking

r54iowa

Member

tim s

Well-known Member

r54iowa

Member

tim s

Well-known Member

Tx Jim

Well-known Member

Similar threads