Tadano TM-2000-1, Service Manual

Page: 90 / 194

G - 2
Boom (Five-section boom)
15
W536-1040E
G - 2
4. Inspection
4.1 Boom
Check the boom for torsion, deformation, warp,
and/or cracks.
4.2 Slide plate
Replace cracked or severely worn parts.
4.3 Sheave
Replace damaged, deformed, or severely worn
parts.
4.4 Wire rope for boom telescoping
If any of the following conditions (1) through (5) are
found, replace the wire rope.
[NOTICE]
If the end of wire rope is not in proper condition,
repair or cut.
1. In running ropes: six randomly distributed broken
wires in one lay, or three broken wires in one
strand in one lay.
2. Wear of one-third of the original diameter of
outside individual wires. Evidence of kinking,
crushing, bird caging, or any other damage
resulting in distortion of the rope structure.
3. Evidence of any heat damage from any cause.
4. Reductions from nominal diameter of more than:
1/64 inch for diameters up to and including 5/16
inch
1/32 inch for diameters 3/8 to 1/2 inch inclusive
3/64 inch for diameters 9/16 to 3/4 inch inclusive
1/16 inch for diameters 7/8 to 1-1/18 inches
inclusive
3/32 inch for diameters 1-1/4 to 1-1/12 inches
inclusive
5. In standing ropes: more than two broken wires in
one lay in sections beyond end connections, or
more than one broken wire at an end connection.