PRONAR RC3100 Operator's Manual page 114

Section 5
5
3
7
2
380Nm
Figure 5.15 Sequence of nut tightening
torque of M=380Nm is obtained) using
a torque wrench. For the recommended
nut tightening sequence and tightening
torque value see figure Sequence of nut
tightening.
Wheel nuts must not be tightened with
impact wrench because of danger of ex-
ceeding permissible tightening torque, the
consequence of which may be breaking
the connection thread or breaking off the
hub pin.
Wheel nuts should be tightened:
• after the first use of the trailer
(one-time inspection),
• every 2–3 hours of the trailer travel
during the first month of the trailer
use,
• every 30 hours of trailer travel.
The above activities should be repeated if
a wheel has been removed from the wheel
5.28 PRONAR RC3100
1
8
4
6
621-I.18-1
Technical inspection schedule
Table 5.6 Tightening torque values
Tightening torque
Thread
8.8
M8 25
M10 49
M12 85
M14 135
M16 210
M20 425
M24 730
M27 1,150
M30 1,450
Figure 5.16 Bolt with metric thread.
axle.
Drawbar eye tightness should be checked
simultaneously with wheel nut tightness
checking. Tightening torque for M20x80
10.9
36
72
125
200
310
610
1,050
1,650
2,100
d
D.3-1