HYDRAULIC CRANE OVERHAULING

Provide a specialized team to check for defects onboard/on-site

 HYDRAULIC CYLINDER UNITS

• Overhaul valve/Multiway valve units, exhaust valve actuator, and oil pressure booster.
• Overhaul cylinder lubricator system.
• Overhaul accumulator.
• Function test 

HPS HYDRAULIC POWER SUPPLY

• Inspection of flushing filter for hydraulic system
• Replacement of hydraulic hose and seal ring
• Overhaul engine-driven pump and start-up pump
• Overhaul accumulator
• Check hydraulic pressure build-up time and hydraulic decay time
• Replacement and readjustment of accumulator block relief valve

MECHANICAL AND PNEUMATIC SYSTEM

• Check gear tooth condition
• Check and retighten the chain
• Overhaul pneumatic valves
• Overhaul main starting valve
• Function test of pneumatic valve system