KB21 Service Manual Pub 09-14
70
40-B. Bucher L.8S - Electric Control/Cable
Control Valves
The Terrain King KB21 Hydraulic Control valve is an Electro-hydraulic (Electric over
Fixed Displacement Gear Pump to facilitate movement of the boom Components.
The use of a Fixed Displacement Pump means that when the tractor is running, the pump is pumping
shut of
f. Likewise, the Oil Flow from the pump through the valve is controlled by the RPMs of the tractor
engine.
the boom funtions.
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