Manitowoc GROVE GMK7450 Maintenance Manual page 53

5.4
H
5.4.1
S
Maintenance manual
GMK7450
Measures required for winch monitoring
Also observe the information on the general inspection of the hoists;
à
P. 8 - 48.
These measures for monitoring the winches (hoists) were compiled by the
German Machine Builders' Association (VDMA) and are to be used for all
truck cranes according to the German Accident Prevention Regulations for
Winches, Hoists and Tractor Machines, DGUV Regulation 52 (BGV D 6) and
DGUV Regulation 54 (BGV D 8) .
Theoretical service life
The theoretical service life is determined according to certain operating con-
ditions and a theoretical total operating time assumed by the design engi-
neer when calculating and dimensioning the winches of your truck crane.
The power unit group M3 and the load spectrum L1 (Km = 0.125) are gener-
ally given for truck cranes in assembly mode, resulting in a theoretical ser-
vice life of 3,200 hrs. (ISO 4301/1, FEM 1.001, DIN calculation basis for power
units).
The theoretical service life is not the same as the real (actual) service life of
a winch!
5.4 Measures required for winch monitoring
3 302 577 en
Maintenance overview
s
5 - 21