I place the 3 PT lever in the raise position and nothing happens at all, as soon as I roll the FEL up the 3 pt raises. No other FEL operatons have any affect on the 3pt raising. Holding against the relief will not lift the 3 pt and no other actions of the FEL will cause the lift either (dumping, lifting etc.) Thanks
Odd. ONLY the curl, not the dump? Sounds like a blocked port/valve/spool.
The hydraulics experts will surely weigh in, but here's what I'm picturing.
Your fluid go into IN on FEL valve, passes through all the OPEN CENTER (OC) spools to the TANK return (OUT or T) and to the POWER BEYOND (PB) port to power the 3 PH.
If the OC portion was blocked in the curl/dump valve (dirt, misaligned, whatever), then the fluid would be blocked from going to the PB. When you work the curl of the bucket, fluid flows through the opening created by the new position of this spool.
The fluid then goes through the rest of the valve (OC) and to the PB and the 3PH just fine.
Since it won't work when finished curling and held against the relief, I'm thinking it is possible the curl spool's/valve's OC is actually blocked and the only fluid you are getting to the PB and 3 PH is from the return side of your curl cylinder. That would explain why it doesn't also work when dumping with the same spool.
Of course, only a part of the spool could be blocked on that valve, which would explain it, too.
Are you comfortable pulling that spool out? Could be dirt, could be bad oring, etc.
How long did it sit with an open system (hoses off or ports exposed to air/moisture)? Maybe some rust or debris got in there...
Do you have a pic of the valve?
- JC