[rooster72]

I changed from 35 to 40 foot and now the header only barely comes off the ground. Have 2 machines the same and the other machine lift's it header very easily. Is there an adjustment somewhere? TIA.

 

[cihmech]

Are the lift cylinders the same size on both machines. I worked on a 8010 that the customer was hooking up a 40' macdon and it come up about half way the stop. I "t" in a guage at lift cylinder and found 3000 psi. Which is high pressure standby. Customer bought the bigger cylinders and installed them up the header went.

 

[IHC560]

Customer bought the bigger cylinders and installed them up the header went.[/QUOTE
Size of lift cylinders is the 1st thing I would check , especially if you went to a 40ft header !

 

[gruoborrac]

our 7230 with 40' MD did the same to us last yr. had Mech come out, he adjusted something on the hyd pump, an allen screw or something but i didn't see exactly where it was. no issues after the adjustment.

 

[Jeff-C-IL]

These combines are prone to getting the PFC system out of adjustment. From what I've heard, you should have a mechanic check and adjust the standby and load pressures every year or so. Everything works better afterward! I'd start there.

 

[rooster72]

The cylinders are the same size. The pressure goes up to about 2500 on both machines. My old machine had a 35 last year. It is the one that will only go up half way with the forty. The second machine had a 40 with the original owner and it lift its header all the way up. What is the "PFC System"?

 

[redgreen]

Back side of PFC pump has an Allen screw with a lock nut. Turn screw in in 1/4 turn increments until header lifts. I believe I have a picture on home computer of screw location I can post next week. Maybe someone else can post or explain location better...

 

[cihmech]

PFC stands for piston flow compensated. It is a piston pump with a valve that controls the flow and pressure of the pump. The pump mounts the the pto gear box supply to it is gravity fed from the hydraulic reservoir. The compensator or control valve mounts to the side of the pump. On one side there is two studs with jam nuts on them . High pressure standby is closest to pump. Clockwise increases pressure. Be careful. Too high pressure and bad stuff happens. Are you checking high pressure standby at cylinders, at the diagnostic port, or on the pro 600/700? I would suggest using the diagnostic port to verify pressure before cranking it up to rule out issues with a lift valve.

 

[rooster72]

I checked the pressure on the pro700. Is the PFC pump the one on the hydraulic line that is coming off the hydraulic cylinders? The dealer is coming out to help set the headers up so will get them to check it out.

 

[cihmech]

The PFC pump supplys the header raise, steering, reel drive and hydraulic cross augers if fitted.