M
AINTENANCE
8.12. Check lowering limiter
WARNING
Danger from chain fracture
If the buffers are damaged, inadmissibly high
loads may act on the chain upon actuation of the
lowering limiter. The chain may break.
I
Do not use the product
I
Have the product repaired (replace buffer)
1. Move the unloaded load hook until just short
of the lower end position.
2. Stop immediately before reaching the end po-
sition and then carefully (by repeatedly press-
ing the control element) move to the end posi-
tion.
3. The movement of the chain must be stopped
due to deformation of the buffer. The engine
will stall in the process.
4. Following successful testing, the buffer must
be unloaded.
8.13. Check overload protection
WARNING
Danger due to overloading
If the overload protection is set too high, imper-
missibly high stresses may arise if a load exceed-
ing the permissible load capacity is attached.
I
Correctly set the overload protection
NOTICE
The adjustment is usually made at room temper-
ature (approximately 20
◦
C (68
◦
F)). In the event
of very high or very low operating temperatures,
the adjustment is to be corrected in relation to the
temperature.
The testing of the overload protection is based on
the attachment of test loads.
1. Attach 125% of load capacity. If this load is
lifted, the overload protection setting must be
corrected.
2. Attach 110% of load capacity. This load must
be lifted. A dynamic overload test of 110% of
the nominal load is therefore possible.
The overload protection is correctly set.
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Doc.-No.: VA049318-10-OM-EN-0319-64-2
