PRONAR T679/5, Operator'S Manual, Page: 80 / 116

PRONAR T679/5 SECTION 5
5.8
Tightening nuts
Nuts should be tightened gradually diagonally, (in several stages, until obtaining the required
tightening torque) using a torque spanner. Tightening of nuts should be checked with the
frequency given in the below table. The activities should be repeated after each removal of a
wheel from the wheel axle.
INSPECTION
Checking wheel tightening:
•
After the first use of trailer (one-time inspection).
•
Every 2 – 3 hours of trailer travel (during the first month of trailer
use).
•
Every 30 hours of trailer travel.
•
The above actions should be repeated individually if a wheel has
been removed from the wheel axle.
TIP
Wheel nuts should be tightened using the torque of 380 Nm - M20x1.5 nuts.
ATTENTION
Axle nuts may not be tightened with impact wrench, because of danger of
exceeding permissible tightening torque, the consequence of which may be
breaking the thread connection or breaking off the hub pins.
The greatest precision is achieved using a torque spanner. Before commencing
work, ensure that correct tightening torque value is set.