500E2 OPERATOR MANUAL MAINTENANCE CHECKLIST
National Crane Published 07-26-2019 Control # 111-06 6-3
10. Boom extension cables for proper tension or evidence of
abnormal wear.
11. Sheaves and cable drums for wear and cracks.
12. Unspool loadline and check according to rope
maintenance procedure.
Periodic/Annual Inspection
Check the following items:
1. All items listed under daily, weekly and monthly
inspections.
2. Loose bolts and fasteners in all areas. Torque pin
retainer bolts.
3. All pins, bearings, shafts, and gears for wear cracks or
distortion to include all pivot, outriggers and sheave
pins, and bearings.
4. Boom angle and boom length indicator for accuracy over
full range.
5. Hydraulic systems for proper operating pressure.
6. Outrigger pads for excessive wear or cracks.
7. Cylinders for:
a. Damaged rods
b. Dented barrels
c. Drift from oil leaking by piston
d. Leaks at rod seals, welds, or holding valves
8. PTO drive line system for proper alignment, lubrication
and tightness.
9. Hydraulic hose and tubing for evidence of damage such
as blistering, crushing or abrasion.
10. Top and bottom wear pads for excessive wear.
11. Inspect all electrical wires and connections for worn, cut
or deteriorated insulation and bare wire. Replace or
repair wires as required.
12. Extend and retract cables, sheaves, pins and bearings
for wear or abrasion.
13. Main frame and stabilizer mount bolts for proper torque
(see Torque Chart).
14. Rotation bearing and gearbox mounting bolts for proper
torque (see Torque Chart).
15. Missing or unreadable warning labels.
16. Missing or unusable/unsafe condition of steps, ladders,
handrails, guards or seat.
Special Boom Inspection
If the boom has not been disassembled and inspected in the
last five years or 3,000 hours of use, the boom is to be
completely torn down to allow a thorough inspection of the
extend and retract cables, sheaves, and pins.
Stability
Stability of unit throughout working area. Check stability
procedure in Installation Section of the Service Manual
annually or when any changes made to crane or truck.
HOIST CABLE INSPECTION AND
MAINTENANCE
Wire rope should be inspected frequently/daily and
periodically/yearly in accordance with the following
information excerpted from a National Consensus Standard
as referenced by Federal Government Agencies.
Recommended inspection intervals may vary from machine
to machine and may vary based on environmental
conditions, frequency of lifts, and exposure to shock loads.
The inspection time intervals may also be predetermined by
state and local regulatory agencies.
NOTE: Wire rope may be purchased through Manitowoc
Crane Care.
Any deterioration observed in the wire rope should be noted
in the equipment inspection log and an assessment
concerning wire rope replacement should be made by a
qualified person.
Keeping Records
A signed and dated report of the wire rope’s condition at
each periodic inspection must be kept on file at all times. The
report must cover all inspection points listed in this section.
The information in the records can then be used to establish
data which can be used to determine when a wire rope
should be replaced.
It is recommended that the wire rope inspection program
include reports on the examination of wire rope removed
from service. This information can be used to establish a
relationship between visual inspection and the rope’s actual
internal condition at the time of removal from service.
WARNING
Worn or Damaged Equipment Hazard!
Never use a worn or damaged wire rope. Death or serious
injury could result from using worn or damaged wire rope.
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