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West Central Iowa | The main system relief valve sits in the main control valve under the cab. The valve in the pump is the steering relief valve. The early SN (before 616246) combines used a cartridge style non-adjustable relief valve part # AW13064.
Later combines used a AH126706 relief valve. I do not know if this one can be adjusted for sure, but I think it can not be.
The PSI settings are usually stamped on the end of the valve. Lots of things (IH tractors) use this style of cartridge relief valve. If you took the old one along to a salvage yard you may be able to find one with a higher pressure setting that would work. I do know IH offers a valve in various pressure setting depending on the size of the tractor. | |
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7720 Combine hydraulic pressure? How to raise it up?
