PRONAR T046H, User Manual

Page: 91 / 116

Chapter 5
5.21
PRONAR T046H
Periodic inspections
TIGHTENING OF THE WHEEL NUTS.
The wheel nuts should be tightened grad-
ually diagonally (in several stages until the
required tightening torque is achieved),
using a torque wrench. The recommended
order of tightening the nuts and the tight-
ening torque is shown in the fi gure Prin-
ciple of the wheel tightening.
Wheel nuts must not be tightened with
impact wrenches, due to the danger of ex-
ceeding the permissible tightening torque,
which may result in breaking the con-
nection thread or breaking the hub pin.
The wheels should be tightened according
to the following scheme:
• after the fi rst use of the trailer
(one-time inspection),
• every 2-3 hours of driving during the
fi rst month of use,
• every 30 hours of driving.
If the wheel was disassembled, the above
steps should be repeated.
I.3.9.614.18.1.EN
1
2
3
4
5
6
7
8
450 – 510Nm
622-I.09-1
Figure 5.13 Wheel tightening principle