Manitowoc Published 05-09-17, Control # 014-28 1-65
16000 SERVICE/MAINTENANCE MANUAL INTRODUCTION
valve. Fluid pressure on rod end of lift cylinder retracts the
cylinder to the desired length.
Hydraulic fluid from piston end of lift cylinder is blocked by
free-flow check valve section of counterbalance valve and
flow restraining section of relief valve preset for a relief
setting of 2,200 psi (152 bar). Piston end cylinder pressure
opens restraining section of counterbalance valve, allowing
fluid to exit valve. Return hydraulic fluid passes through three
bank manifold valve before returning to crane hydraulic tank
through return line.
When retraction is reached, release switch to lock cylinder in
position. Hydraulic fluid at piston end of lift cylinder
counterbalance valve holds lift cylinder in selected position.
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