Manitowoc National Crane NBT60L

2-42 Published 09-06-2019 Control # 691-01
SAFETY PRECAUTIONS NBT60L OPERATOR MANUAL
NOTE: The following checklist includes all features that
can be found on National Crane. 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.