TM 5-3610-253-14
c. Inch valve. The inch valve is used during knife changing. After the clamp has
been lowered, solenoid M1, the locking valve, is de-energized by pulling outward on
the clamp pressure control knob. This also mechanically opens the inch valve.
This reduces the pressure to the clutch ram and allows the knife to be inched down
slowly and reduces the wear of the clutch linings.
d. Clutch ram. Uses hydraulic fluid pressure from the control block to engage a
friction clutch on the drive pulley. This causes rotation of the main drive gear.
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