BOOM 2250 SERVICE/MAINTENANCE MANUAL
4-20
Published 07-19-16, Control # 249-01
Length
See Figure 4-19 and Table 4-4 for the following procedure.
NOTE: See the appropriate Rigging Drawing in the
Operator Manual for the original length.
1. Measure from one pin hole to the opposite pin hole to
check the strap length.
The strap length includes the
connecting link.
2. If a deviation in length is detected and it is greater than
the maximum allowed, remove the strap from service.
Table 4-4. Strap Length Deviations
Storing Straps
Straps should be stored in a protected area. If stored in the
open, a protective covering is recommended, especially in a
corrosive environment in which the straps are exposed to
elements such as harsh chemicals or salt water spray.
Inspect straps in storage for corrosion monthly. If necessary,
sandblast to remove corrosion and repaint to maintain a
continuous protective surface. If corrosion is not removed,
the strap will have to be removed from service because the
reduction in thickness will exceed the maximum allowed.
A full periodic inspection is required for straps returned to
service from storage.
Removing Straps from Service
Straps removed from service should be clearly marked to
prevent accidental future use. Rendering the strap useless in
some way, such as cutting off an end, is recommended.
Strap Inspection Checklist
A strap inspection checklist is provided at the end of this
section. The checklist can be reproduced as needed.
Signed and dated copies of the strap inspection checklist
must be kept on file at all times for each strap because they
may be required to verify warranty or product liability claims.
If no damage is found or damage is within specifications,
check the box (
) next to the item to indicate that its specific
condition was evaluated and found acceptable. If damage is
not within specifications, indicate so in the box next to the
item (for example: “D” to indicate damage).
LATTICE SECTION INSPECTION AND
LACING REPLACEMENT
Refer to Folio 1316 at the end of this section for lattice
section inspection and lacing replacement instructions.
Strap Length
m (ft)
Maximum Deviation Allowed
25,4 to <50,8 mm
(1 to <2 in) Thick
50,8 to <101,6 mm
(2 to <4 in) Thick
<0,9 (<3) 4,3 (0.17) 12,7 (0.50)
0,9 to <1,2
(3 to <4)
15,9 (0.63) 14,3 (0.56)
1,2 to <1,5
(4 to <5)
19,1 (0.75) 17,5 (0.70)
1,5 to <1,8
(5 to <6)
20,6 (0.80) 19,1 (0.75)
1,8 to <2,1
(6 to <7)
22,2 (0.88) 19,1 (0.75)
2,1 to <2,4
(7 to <8)
23,8 (0.94) 19,1 (0.75)
2,4 to <2,7
(8 to <9)
25,4 (1.0) 19,1 (0.75)
2,7 to <3,0
(9 to <10)
25,4 (1.0) 22,2 (0.88)
3,0 to <3,7
(10 to <12)
25,4 (1.0) 25,4 (1.0)
≥3,7 (≥12)
Deviation not to exceed 25,4 mm (1 in)
in any 3,7 m (12 ft) length of strap
< = less than
≥ = equal to or greater than
Length
Strap
Link
A1086
FIGURE 4-19
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