PRONAR T663/4 Operator's Manual page 100

Pronar T663/4 T663/4 SILO
Place wheel on hub, tighten nuts so that wheel rim adjoins hub exactly.
Lower the trailer, tighten nuts according to recommended torque and given
sequence.
TIP
Wheel nuts should be tightened using the torque of 270 Nm - M18x1.5 nuts.
FIGURE 5.3 Sequence of nut tightening
(1) - (6) sequence of nut tightening, (L) spanner length, (F) user weight
Tightening nuts
Nuts should be tightened gradually diagonally, (in several stages, until obtaining the required
tightening torque) using a torque spanner. If a torque spanner is not available, one may use
an ordinary spanner. The arm of the spanner (L) figure (5.3) should be selected according to
the weight of the person (F) tightening the nut. Remember that this method of tightening is
not as accurate as the use of a torque spanner.
5.8
SECTION 5