Operator`s manual

When the Pump Control Valve in the cab (3) is pulled out, air pressure from the Air Tank is applied
against one side of the Cylinder Shifting Pump (8) and causes the engine drive train to disengage from the
axle and the Hale pump to engage with the engine. When the Pump Control Valve is pushed in, air from
the Air Tank is transferred to the opposite side of the Cylinder Shifting Pump, which causes the pump to
disengage from the engine and the truck drive train to re-engage with the axle.
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