National Crane 1-25
Overload less than 25%
1
Sheaves,
Rope Guides
Inspect all for damage.
2
Collar-Wear
Pads, Pad
Retainers
Inspect for damage.
Overload from 25% to 49%
1
Sheaves,
Rope Guides
Inspect all for damage.
2
Collar-Wear
Pads, Pad
Retainers
Inspect all for damage.
3 Collar-welds Inspect all for damage.
4 Pinning Areas Inspect all for cracks.
5
Telescopic
Sections
Inspect for bent or twisted sections. Check the boom
for straightness.
6
Lift Cylinder
Head Area
Inspect for bends or cracked welds.
7
Turret-Base
Section
Inspect for cracked welds.
8 Jib Section
Inspect for bent or twisted section. Check for
straightness.
9 Welds Inspect for cracks.
10 Paint
Inspect for cracked paint which could indicate twisted,
stretched, or compressed members.
Reference Only
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