PK 6500 M
Palfinger Marine PK 6500 M — Provision and service vessel operations, deck cargo handling.
Inspector Detail
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Common issues
- Hydraulic cylinder seal leakage causing boom drift
- Wire rope wear, birdcaging, or broken wires from repeated cargo handling
- Slew bearing wear leading to play or noise in the slewing motion
- Load moment limiter sensor drift causing false overload cut-outs, or missed real overloads
- Hydraulic hose chafing at boom articulation points
- Corrosion of pins/bushings from inadequate greasing in exposed deck locations
Inspection checklist
- Visual check of boom, jib, and structural welds for cracks or deformation
- Check wire rope for broken wires, corrosion, kinking, and diameter reduction
- Function test of the load moment/overload protection system
- Check the hydraulic system for external leaks and correct working pressure
- Grease all pins, bushings, and the slew bearing per the lubrication schedule
- Check the hook and safety latch for deformation or wear
- Test all limit switches - luffing, slewing, hoisting
- Function test the emergency stop and manual lowering (power/hydraulic failure backup)
- Verify the current load test/thorough examination certificate is valid and on board
Service intervals
| Wire rope inspection | before each use, with a documented detailed inspection at least every 3 months |
| Full lubrication of pins/bearings | per the manufacturer's schedule, typically monthly or per running-hour interval |
| Hydraulic oil/filter change | per the manufacturer's interval, typically annually or per running-hour schedule |
| Load test / thorough examination | annually, or per flag/class requirement, by a competent person |
| Load moment limiter calibration check | annually or after any repair affecting the sensing system |
Typical wear limits
| Wire rope diameter reduction | commonly discarded once diameter loss or broken-wire count exceeds the applicable wire rope standard's limit - confirm the exact criteria against the standard currently in use, not a fixed number here |
| Hook wear/deformation | reject on any crack, significant throat opening increase, or visible twist - confirm exact criteria against the applicable lifting equipment standard |
Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Critical spares
- Hydraulic cylinder seal kits
- Wire rope of correct diameter/construction for this model
- Hook block with safety latch
- Hydraulic hoses matched to working pressure
- Slew bearing bolts/seals
- Limit switches
Safety
- Never bypass or disable the load moment limiter/overload protection
- Stay clear of the load path and slewing radius during operation
- High-pressure hydraulic fluid injection risk from pinhole leaks - never check hoses by hand
- Confirm the SWL/outreach chart at the operator's station is current and matches the certified load test
- Do not operate with an expired thorough examination or load test certificate
Class survey
Lifting appliance, subject to periodic thorough examination and load testing per flag/class rules (commonly annual, with a more extensive test at longer intervals). The surveyor checks the crane's certificate register, wire rope renewal history, and load moment limiter test records; this crane sits under the ship's lifting appliances/cargo gear register, not Continuous Survey Machinery.
Components & Design
Component data being added…
Technical Data
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Common failures & inspection points
Inspect all hydraulic connections, hose assemblies, and seal integrity; verify fluid color and condition; check pressure gauges for normal operation; document any seepage or evidence of past leaks
Visually inspect boom, pedestal, and structural welds for cracks, fatigue damage, and corrosion; perform NDT testing (ultrasonic or UT) on critical welds; verify paint/coating integrity in marine environment
Examine wire rope for kinks, broken wires, corrosion, and abrasion; verify diameter loss is within limits; inspect terminations (shackles, splices) for proper attachment and fatigue cracks; conduct proof load test as per class requirements
Verify hook block is properly marked with SWL and proof load; inspect for cracks, bending, or wear; confirm certification plate matches crane model and capacity; test mechanical properties of attachment point
Activate emergency stop button and verify crane stops immediately; test all motion controls (hoist, luff, slew) for smooth operation and proper load limiting; verify sensors and limit switches are functional; confirm radio remote control batteries and signal strength (if applicable)
Type-general inspection and maintenance points for this equipment category — not model-specific.
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