PRONAR T185/1, User Manual, Page: 124 / 156

Chapter 5 Periodic inspections
5.22
PRONAR T185/1
TIGHTENING THE WHEELS
The wheel nuts should be tightened gra-
dually diagonally (in several stages until
the required tightening torque is achieved),
using a torque wrench. The recommended
order of tightening the nuts and the ti-
ghtening torque is shown in the drawing
Tightening principle of the wheel.
The wheel nuts must not be tightened with
impact wrenches, because of the danger
of exceeding the permissible tightening
torque, which may result in breaking the
thread of the connection or breaking the
hub pin.
The wheels should be tightened according
to the following scheme:
• after using the trailer for the first time
(one-time inspection),
• every 2-3 hours of driving during the
first month of use,
• every 30 hours of driving.
If the wheel was disassembled, the above
steps should be repeated.
1
2
3
4
5
6
7
8
450 – 510Nm
622-I.09-1
Figure 5.15 Wheel tightening rule