NATIONAL CRANE Published 11-01-2020 Control # 710-00 6-1
NBT60XL OPERATOR MANUAL MAINTENANCE CHECKLIST
SECTION 6
MAINTENANCE CHECKLIST
SECTION CONTENTS
Crane Inspection And Maintenance . . . . . . . . . . . 6-1
Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-1
Special Boom Inspection . . . . . . . . . . . . . . . . . . . 6-3
Stability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Hoist Rope Inspection And Maintenance . . . . . . . 6-3
Keeping Records . . . . . . . . . . . . . . . . . . . . . . . . . 6-3
Environmental Conditions . . . . . . . . . . . . . . . . . . . 6-3
Dynamic Shock Loads . . . . . . . . . . . . . . . . . . . . . 6-4
Precautions and Recommendations During
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Inspection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-4
Wire Rope Replacement. . . . . . . . . . . . . . . . . . . . 6-5
Care of Wire Rope . . . . . . . . . . . . . . . . . . . . . . . . 6-5
Replacement Rope . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Crane Adjustments and Repairs . . . . . . . . . . . . . . 6-6
Boom Extension Cable . . . . . . . . . . . . . . . . . . . . . 6-6
Jib Jack Service and Maintenance . . . . . . . . . . . . 6-6
Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Rust Prevention . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Hydraulic System . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Oil Cooler. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-6
Tire Load And Inflation Table . . . . . . . . . . . . . . . . . 6-7
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
Hydraulic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
Air Conditioner . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
Hoist System . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-10
Swing Gearbox . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
Crane Operating Speeds . . . . . . . . . . . . . . . . . . . 6-11
Counterweights . . . . . . . . . . . . . . . . . . . . . . . . . . 6-11
Anemometer (Optional) . . . . . . . . . . . . . . . . . . . . 6-11
Camera (Optional) . . . . . . . . . . . . . . . . . . . . . . . . 6-12
General Specifications. . . . . . . . . . . . . . . . . . . . . 6-12
CRANE INSPECTION AND MAINTENANCE
Regularly scheduled inspection and maintenance intervals
are required to keep the unit in peak operating condition. The
following pages outline the inspection and maintenance
intervals.
Refer to the Service Manual for complete instructions on
performing maintenance on this crane.
Inspections
The inspection intervals listed below are to be conducted on
the unit to ensure safe and proper operation. If replacing a
missing fastener or tightening a loose fastener, refer to the
applicable torque chart in Section 1 of the Service Manual.
Should a deficiency be found, a determination must be made
as to whether the deficiency is a safety hazard or though not
yet a safety hazard, needs to be monitored in the monthly
inspections.
The inspections are separated into the following frequency
classifications:
• Daily inspections — performed by the operator at the
start of the day.
• Weekly inspections — performed by the operator.
• Monthly inspections — performed by maintenance
personnel.
• Periodic inspections — performed by maintenance
personnel at least every three months and includes all
items listed under daily, weekly, and monthly
inspections. Federal Laws through OSHA and ASME
B30.5 require that dated and signed records of these
periodic inspections be kept. An inspection log book is
available from National Crane.
DANGER
Do not, under any circumstances, work at an elevated
height without using proper fall protection as required by
local, state or federal regulations
WARNING
If any deficiency determined during the inspection is a
safety hazard the machine must be removed from service
and the deficiency corrected.
Fo
r
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