45
12 Maintenance and servicing
12.7 Screw connections
Check bolts and nuts for the first time after five hours of operation and
then tighten them regularly (every 50 hours of operation).
• All torques MA are standard values for metric standard threads accor-
ding to DIN. Friction coefficient 0.14 - new bolts - unlubricated. The
values were recommended as guide values by different bolt manufac-
turers. We cannot assume liability for use.
• Self-locking nuts must be replaced after each dismantling.
12.8 Fuse replacement
The machine is protected by a fuse.
The fuse slot on the WR 870 Battery
is located on the handle in the
switch housing.
60 Ampere fuse
(Fig. 26 - Fuse)
Thread
3.6
5.6
6.8
8.8
10.9
12.9
M6
3.43
4.51
8.73
10.3
14.71
17.65
M8
8.24
10.79
21.57
25.50
35.30
42.17
M10
16.67
21.57
42.17
50.01
70.61
85.32
M12
28.44
38.25
73.55
87.28
122.58 147.10
M14
45.11
60.80
116.70 135.27 194.17 235.36
M16
69.63
93.16
178.46 210.84 299.10 357.94
M18
95.13
127.40 245.17 289.30 411.88 490.34
M20
135.33 180.44 348.14 411.88 576.50 669.26
M22
162.40 245.17 470.72 558.98 784.45 941.44
Torque MA
