John Deere 410 hydraulic troubles

[JD410Jersey]

Ok I’ll order another gauge ... if that gauge shows 50 psi what would be my next step

 

[mg2361]

Like Delmer said, charge pressure (which comes from the transmission pump) has everything to do with your hydraulics. No charge, no hydraulics. Those radial piston pumps don't pull oil at all, so they need help. Check that your clutch is adjusted properly. I see from your posted pictures you have a manual. Adjust the clutch per section 50 page 10-6 first then section 50 page 20-8 second. Then post what the transmission pressure is after the adjustments (with your new gauge).

If that does not bring your pressure up then the next thing I would check is your transmission filter relief valve. That is the large plug on the side of the case just above the transmission filter (see section 70, page 5-10, picture shows location).

 

[JD410Jersey]

So i did not adjust the clutch but I got a 300 psi gauge and it says I’m at 150 psi at the transmission....

 

[JD410Jersey]

i also checked the transmission filter relief valve and The spring was fine

 

[mg2361]

Reverser pressure spec is 160 +/ 5. So 150 would be close enough. To lose that pressure between the trans pump and the hydraulic pump with the filter bypass being OK (you said spring was OK, does the spool move freely and not stuck?) then the next place to lose hyd pump charge pressure would be the cooler bypass valve or the gaskets behind the transmission control valve.

 

[JD410Jersey]

Yeah the spool moved no problem slid right out ....I’ll pull apart the control looks from the book the cooler bypass is also in here ... if I pull it a part I’ll see both the cooler bypass and seals ? Looks like the left side of the pic ?

 

[mg2361]

 

[JD410Jersey]

So I pulled it apart today and the springs are fine ... unable to get number 36 on the chart out ... which gasket could be an issue ?

 

[mg2361]

Is #36 stuck? If it is that could be your problem.

 

[JD410Jersey]

Yeah it’s not coming out... is there a trick to getting it out ?or should it just come out when I pull the spring ?

 

[mg2361]

Try a small pair of needle nose pliers to grab it. if that does not work I would just remove the valve assembly completely.

 

[JD410Jersey]

So it’s been cold over here but I was able to work on the machine a little today and was able to pull out #36 It was not stuck ... I do have a leak on the low pressure line to oil cooling radiator... the line was rubbing on another metal line and caused a hole ... is it possible it’s sucking air ?

 

[mg2361]

The cooler is supposed to have lube pressure in it (8 - 10 psi), not suction oil, but it is a good idea to eliminate leaks anyway.

 

[JD410Jersey]

So I finally figured out the issue ... I plugged the tee fitting off the hydraulic main line to the steering valve and the the rest of my hydraulics work as they should ... any recommendations on how to get to the valve easily and what needs to be done to it when I do get to it ... and thanks guys I really appreciate all the help till now

 

[56wrench]

electric de-stroke valve stuck? it de-strokes the pump while cranking allowing the starter to spin the engine easier. just a random thought

 

[JD410Jersey]

I found the issue it’s the steering valve ... not really sure what goes bad inside them