Replaced all loader hoses and can only get minimal function

[TheOldHokie]

Being of a simple mind, what I would probably do, is remove all the hoses and fitting from the control valve, then shift it for each movement and see which outlet spit out oil for each function.

Seems like that would identify where each of the four hoses controlling lift and tilt should be. The remaining hose would go to to the remaining port.

How crazy am I? No offense will be taken for honest assessments!

Simple works for me and I would have done that long ago. You only need to identify 3 and the fourth is revealed.

Dan

 

[TheOldHokie]

Looking at the schematic I can see how A1 gets pressurized (blue lines)- is that my lift (head) side of the boom cylinder? checked pressure is put on A1.
The red shows A1, B1, and PB all getting checked pressure.
The green shows Pressure directly to PB (outlet) and A1 and B1 being connected to the transmission line.
But I do not see how B1 gets pressurized - schematics with red markups. Is the boom down movement not pressurized? It would have to be to pick up the front end of the tractor?


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Only one port is pressurized at a time. Read Henro's advice.

Dan

 

[GreensvilleJay]

sigh, after trying to read 3 pages of posts I have a headache....
call me simple but.....
I'd locate the two hoses going to the boom, connect them to the two ports on the left side. power up tractor and move joystick to raise the boom..it should go up,go other way it has to go down.
when that works THEN connect the two lines for the bucket, power up, test the bucket for 'curl and dump',THAT should work.
If it doesn't post picture of your joystick/valve assembly. Maybe ,just maybe it's not a factory setup ?? Others with the SAME tractor/loader setup are the best for help....

 

[TheOldHokie]

sigh, after trying to read 3 pages of posts I have a headache....
call me simple but.....
I'd locate the two hoses going to the boom, connect them to the two ports on the left side. power up tractor and move joystick to raise the boom..it should go up,go other way it has to go down.
when that works THEN connect the two lines for the bucket, power up, test the bucket for 'curl and dump',THAT should work.
If it doesn't post picture of your joystick/valve assembly. Maybe ,just maybe it's not a factory setup ?? Others with the SAME tractor/loader setup are the best for help....

You think your head hurts. The OP cant seem to reliably identify the two left side ports. Henros method is GI proof.

Dan

 

[PoTreeBoy]

Looking at the schematic I can see how A1 gets pressurized (blue lines)- is that my lift (head) side of the boom cylinder? checked pressure is put on A1.
The red shows A1, B1, and PB all getting checked pressure.
The green shows Pressure directly to PB (outlet) and A1 and B1 being connected to the transmission line.
But I do not see how B1 gets pressurized - schematics with red markups. Is the boom down movement not pressurized? It would have to be to pick up the front end of the tractor?


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Your blue path is boom down. B1 is the boom extend. Your red path is boom up. Green is float.

 

[Nickk]

I want to thank all of you for your help. It turns out that the pressure regulator in the outlet block had something going on. I took it apart, cleaned it, reinstalled it and all is good