Hook Inspection - R&M LM Installation And Maintenance Manual

LM10 I&M MANUAL/EN/11.30.2010

7.10.2 Hook Inspection

The wear on the top hook and the load hook SHALL be checked routinely. Measure the throat
a
opening (dimension 2 - FIGURE 21). If the throat opening exceeds the maximum opening allowed,
replace the hook. Damaged safety latches shall be replaced immediately.
Figure 21. Hook Dimensions
LOAD
TEST
CAPACITY
LOAD
(LBS)
1389 2778
2205 4409
2756 5512
4409 8818
ØM Øa1 a2
0.630 1.417 1.024
0.630 1.417 1.024
0.787 1.693 1.339
0.787 1.693 1.339
Initial Dimension – a2
1.024 inches
1.339 inches
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MINIMUM
FAILURE
FALLS
1
1
2
2
HOOK DIMENSIONS – INCHES
a3 b1 b2
1.614 0.866 0.748
1.614 0.866 0.748
1.929 1.142 0.945
1.929 1.142 0.945
Max. Allowed Dimension
1.178 inches maximum
1.540 inches maximum
CLASS
LOAD
8752 025T
11023 025T
17361 05T
22046 05T
e1 h1 h2
3.780 1.102 0.945
3.780 1.102 0.945
4.134 1.457 1.221
4.134 1.457 1.221
Mark: ISO 2766
DIN Model Number: 15401
DIN 15400 Class: T
DIN 15401 Material: 35 CD 4
t1 t2
1.496 0.512
1.496 0.512
1.496 0.551
1.496 0.551
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