Tadano GR-300EX-3, Service Manual

Page: 20 / 157

Y-1 Y-1
Service Data
7
WY01-3050E
5.3 Jib bending and deformation
(1 mm = 3.93701 × 10
-2
in)
Item Standard value (mm) Remarks
Check for bending of the whole jib
a
IWY01-001007
L
a ≤ 8.5
No significant bending in vertical and
horizontal direction shall be found.
a ≤ 1.5 + L /1000
L = 7000
(jib full retraction)
Check for dents and other localized indentation or
bending
IWY01-0010E08
d
L
d ≤ 0.8
(for indentations with L ≥ 15 mm)
5.4 Wire rope
[NOTICE]

If the local laws, regulations or rules concerning the criteria of wire rope replacement are stricter than the
standard described in this manual, observe the local ones.
(1 mm = 3.93701 × 10
-2
in)
Item Standard value Limit value Remarks
For main
winch
Wire rope diameter (mm) 16 (Nominal diameter) 14.9
Construction
7×7+ 6×Fi (29) O/O
370-018-00060, 05280
Number of broken wire (pcs.) – 13
For
auxiliary
winch
Wire rope diameter (mm) 16 (Nominal diameter) 14.9
Construction
7×7+ 6×WS (36) O/O
370-018-05020, 06890
Number of broken wire (pcs.) – 17
Top boom
extension
Wire rope diameter (mm) 18 (Nominal diameter) 16.8
Construction
IWRC 6×P •WS (31) O/O
370-019-21700
Number of broken wire (pcs.) – 15
Top boom
retraction
Wire rope diameter (mm) 10 (Nominal diameter)
9.3
Construction
IWRC 6×Fi (29) O/O
370-019-21670
Number of broken wire (pcs.) –
13
Criteria for
wire rope
replacement
1. Replace the wire rope if it is deformed or corroded.
2. Replace the wire rope if it is kinked.
3. Replace the wire rope if 10% or more of the wires (except for filler wires) in a lay are broken.
4. Replace the wire rope if the diameter is reduced by more than 7% of the nominal diameter.
5. Replace the wire rope if it has been degraded by heat.