What kind of oil are you using in the header? Hydraulic oil or 15w40?

 

15w40

 

I'm assuming you changed the filter when you switched out the block? Did the new block come with all new valves? There are a bunch of check valves, pressure relief valves, and pressure compensating valves in that thing. If it's not the motors, not the manifold, not the various valves in the manifold, not the filter, not the oil (changed recently?), then the only thing left on the header is the pump.

Can you put a flow meter and pressure gauge on any of the lines to motors to measure the drop in flow?

Being that it's on a Case combine(?), is it a combine with a variable-speed feederhouse? Is the feeder speed staying constant?

 

Yeah the new pump come together with filter and all new valves. It is a combine (case 9230) with a variable-speed feederhouse. Well, I'll change the pump then for now and will see, thank You

 

I hope that fixes it. Sounds like an expensive bunch of parts. Definitely report back with what you find out.

 

Do you have a hydraulic leak somewhere and are loosing oil? Have you checked the oil level?

 

No leaks or losing oil at all. Yeah I'll let You know if that's solve the problem. I just disconnect pea auger for now and I see works fine

 

could it be the pea auger motor acting up?, to much restriction in flow ?

 

we have a case IH model 2162 made bt mac DON DRAPER HEAD tHE CENTER DRAPER BELT WILL NOT KEEP TURNING cAN REVERSE THE FEEDER HOUSING AND IT WILL TURN sTART IT UP TO RUN SOMETIMES WILL START OTHER TIMES IT WILL NOT OR WILL STOP RUNNING QUICKLY WHAT SHOULB WE LOOK AT TO CORRECT THE PROBLEM

 

First check for anything blocking the feed draper along all edges, and the tension on the belt. Change the filter behind the access panel.

Then

Check the splines on the motor going into the drive roller. They tend to strip.

If the splines are good on both motor and roller, check and see if the motor turns while out of the roller.

If the motor seems to run fine, it's probably the relief valve. Phone macdon tech support they'll tell you which one to replace, it's one of the reliefs on the forward(inside) face of the valve block. There's an access hole to get at them. Sometimes you just need to turn it in a little bit but usually it's replace.

Worst case scenario when we had feed draper issues on a header we had to change the whole valve block.

 

if it is speeding up and slowing down sounds like a failed hydraulic accumulator.

 

Check relief valve on back of hydraulic block
Lock nut can back off and you lose pressure so it will turn when you're empty and troubleshooting but stops under load.