PRONAR T669, Operator'S Manual

Page: 98 / 135

Pronar T669 SECTION 5
5.10
IMPORTANT!
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 by use of a torque spanner. Before commencing work,
ensure that correct tightening torque value is set.
TAB. 5.1
Spanner arm
WHEEL TIGHTENING TORQUE BODY WEIGHT (F) ARM LENGTH (L)
[Nm] [kg] [m]
90 0.5
80 0.55
70 0.65
450
60 0.75
Checking wheel axle tightening:
•
after first use,
•
after first travel with load,
•
after passing the first 1 000 km,
•
every six months use or every 25 000 km.
In the event of intensive work check the nut tightening at least every 100 km. The above
actions should be repeated individually if a wheel has been removed from the wheel
axle.
5.2.7 CHECK AIR PRESSURE, EVALUATE TECHNICAL CONDITION OF
WHEELS AND TYRES
Tyre pressure should be checked each time after changing spare wheel and not less than
every month. In the event of intensive use it is recommended to check air pressure more
frequently. During this time trailer must be unloaded. Checking should be done before
travelling when tyres are not heated, or after an extended period of parking.