7
Inspection and maintenance
146
07.2020
ba
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-us
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-ys
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7.19.9
Checking the load hook
NOTICE
Danger of material damage
The bottom hook block must be checked for damage. Deformations, cracks and cuts
caused by impact must be assessed.
The damage can only be assessed by a qualified person.
Fig. 86
Warning
A damaged load hook can cause the load to fall and result in serious
injuries.
➢
Check the load hook for damage, corrosion and wear.
➢
Check function of the hook safety latch.
With visible damage, corrosion or wear, replace the load hook.
Measure the dimensions “y” and “h”.
Compare the measured values with the permissible values (see table).
If “y max.” is exceeded or “h min” is undershot, repl
ace the load hook.
RSN,
RS
Hook size
025
04
05
08
1
1.6
2.5
4
5
6
10
[in]
h
0.94 1.14 1.22 1.46 1.57 1.89 2.28 2.64 2.95 3.35 4.17
h min 0.9 1.09 1.16 1.39 1.5
1.8 2.17 2.51 2.81 3.18 3.96
Tab. 34
Fig. 87
RSN,
RS
Hook size
2.5
4
5
6
10
[in]
h
1.97 2.36 2.64 2.95 3.74
h min 1.87 2.24 2.51 2.81 3.56
Tab. 35
y
new
see hook certificate.
y
max
≤
1.1 × y
new
