Manitowoc National Crane NBT50 Series, Operator'S Manual

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Published 03-23-2018 Control # 243-14
SAFETY PRECAUTIONS NBT50 OPERATOR MANUAL
NOTE: The following checklist includes all features that
can be found on Manitowoc cranes. Your crane
may not have some features.
Overload less than 25%
1 Lift Cylinder Inspect for leaks.
2 Wire Rope Inspect all for damage.
See topic in Introduction section
of Service Manual.
3
Turntable
Bearing
Check bolts for proper torque.
See topic in Swing section of
Service Manual.
Overload from 25% to 49%
1 Lift Cylinder Inspect for leaks.
2 Wire Rope Inspect all for damage.
See topic in Introduction section
of Service Manual.
3
Turntable
Bearing
Check bolts for proper torque.
See topic in Swing section of
Service Manual.
4 Hoist/Drums Inspect each for damage.
5 Hoist Brakes Brakes must hold rated line pull.
6
Bearing Main
Boom Pivot
Pin
Inspect for deformation, cracked welds.
7
Lift Cylinder-
Lower Mount
Inspect pin and welds.
8 Turret Area Inspect for deformation, cracked welds.
9
Mounting
Studs
Check bolts for proper torque.
10 Welds Inspect for cracks.
11 Paint
Inspect for cracked paint which could indicate twisted,
stretched, or compressed members.