Manitowoc 2250 Service And Maintenance Manual

Reference Only
Manitowoc Published 11-06-15, Control # 040-13 4-15
2250 SERVICE/MAINTENANCE MANUAL BOOM
4
Replacement Specifications
Any strap not within the specifications listed in Table 4-1
must be replaced.
Table 4-1Strap Specifications
Corrosion Or Abrasion
See Figure 4-16 for the following procedure.
For quick identification by repair workers, clearly mark
damaged areas with brightly colored tape.
1. Sandblast to remove corrosion. Do not grind!
2. Determine reduction in thickness.
3. If reduction is less than 6% of strap thickness, paint
strap to maintain continuous protective coating.
4. If reduction is 6% or more, remove strap from service.
WARNING
If damage to strap exceeds that allowed within
specifications, do not operate the crane until strap has
been replaced.
Operating the crane with a damaged strap can cause
structural failure or collapse of the boom, jib, mast, or
other crane components.
Condition Reference
Allowable
Tolerance or
Deviation
Corrective Action
Dent Figure 4-13
< 0.12 in
(3,175 mm)
Monitor condition.
≥ 0.12 in
(3,175 mm)
Remove strap from
service.
Kink Figure 4-14
None
Remove strap from
service.
Crack or
Break
Figure 4-15
None
Remove strap from
service.
Corrosion or
Abrasion
Figure 4-16
<6% of strap
thickness
Sandblast and paint to
maintain continuous
protective coating.
≥6% of strap
thickness
Remove strap from
service.
Straightness
(gradual or
sweeping
bend)
Figure 4-17
Varies
depending on
strap length
Remove strap from
service if deviation
exceeds maximum
allowed.
Flatness
(includes
twisted
straps)
Figure 4-18
Varies
depending on
strap length
Remove strap from
service if deviation
exceeds maximum
allowed.
Elongated
Holes
Figure 4-19
None
Remove strap from
service.
Length Figure 4-20
None
Remove strap from
service.
< = less than
≥ = equal to or greater than
Dent
Dent
Depth
of Dent
A1086
FIGURE 4-13
Kink
Kink
Do not straighten or bend into
alignment. Remove from service.
A1086
FIGURE 4-14
Crack Or Break
Do not weld. Strap cannot be
repaired. Remove from service.
Crack or
Break
A1086
FIGURE 4-15

Manitowoc 2250 Specifications

General

Brand	Manitowoc
Model	2250
Category	Construction Equipment
Language	English