Examine The Main Drive - LELY WELGER AP 530 Operator's Manual

5
4
1
4
Figure 48
5
4
8
6
Figure 49
5
Figure 50
LELY WELGER AP 530 AP 630
5.2.8
To protect the main drive from overloading, the baler is provided
with an automatic dual friction clutch.
lt consists of a plate clutch in front of the flywheel with triangular
plate spring 1 (Figure 48) and either a conical friction clutch 2
6
located behind the flywheel (AP 530 and AP 630, Figure 49) or
a three-block friction clutch (AP 730 and AP 830, Figure 50).
ln the case of machines AP 530 and AP 630, the rear conical
friction clutch also has a shear bolt 3 (Figure 49 and Figure 51)
of the size:
M 7 X 50 DIN 931 -8.8
This bolt should be tight. It is secured by means of an M 7
DIN 934-8 hexagon nut and a A 7 DIN 127 spring washer.
For the safety of the baler, it is important that the dual clutch
system is working correctly. The torque levels to be transmitted
are:
7
2
a) for the plate clutch
3
b) for the three-block friction clutch
These values are set at the factory. Normally, the friction clutch
does not require readjustment. However, if the friction blocks
and linings are badly worn, the correct torque specification may
not be achieved. In this case, the friction blocks or linings of the
dual clutch are to be replaced.
Do not omit any of the shims 8 when rebuilding (Figure 49). All
shims should be refitted. Place the correct number of shims 8 in
front of and behind the triangular plate spring 1 to achieve the
specified torque.
AP 730 AP 830

Examine the main drive

AP 530:
AP 630:
AP 730/AP 830:
AP 730/AP 830:
Note!
M = 600 - 700 Nm
D
M = 600 - 800 Nm
D
M = 900 - 1000 Nm
D
M = 2500 - 2900 Nm
D
65