Stahl ST05, Original Instructions Manual

Page: 44 / 56

7 Inspection and maintenance
44 01.2019
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7.15 Checking hook for wear
NOTICE
Danger of material damage
The load hook, suspension hook and bottom hook block must be checked for damage
and wear. Deformations, cracks, cuts caused by impact and corrosion must be as-
sessed.
The hook safety latch must close completely, replace if necessary.
The damage can only be assessed by a qualified person.
•
The hook dimensions must not exceed those specified in the following table.
Fig. 53
ST05 ST10 ST20 ST30 ST32 ST50/ST60
1/1 2/1 1/1 2/1 1/1 2/1 1/1 2/1 1/1 2/1 1/1 2/1
[mm] [mm] [mm] [mm] [mm] [mm]
Load hook
h 19 24 19 24 24 31 31 37 31 40 37 48
h min. 18 22.8 18 22.8 22.8 29.5 29.5 35.2 29.5 38 35.2 45.6
Suspension hook
h 24 24 24 24 37 37 37 37 39.5 39.5 39.5 39.5
h min. 22.8 22.8 22.8 22.8 35.1 35.1 35.1 35.1 37.5 37.5 37.5 37.5
y
new
see hook certificate
y
perm
=

1.1 x y
new
If value h
min
and/or y
perm
is reached → replace hook
•
If the load hook or suspension hook should display distortion, breaks, cracks or
corrosion they must be replaced.
7.16 Oil change
Fig. 54
•
Suspend chain hoist horizontally.
•
Change oil while warm if possible.
•
See "Technical data" for suitable types and quantity.
•
Replace copper gaskets.
•
Screw down oil drain plug (2) and oil filling plug (1) (25 Nm).
Dispose of used oil in accordance with environmental regulations.
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y
W0973