PRONAR T669/1, Operator'S Manual, Page: 99 / 137

SECTION 5 Pronar T669/1
5.9
Loosen wheel nuts according to sequence given in figure (5.4).
Place a lift and raise the trailer to a sufficient height so that the wheel to be
replaced does not touch the ground.
Dismount wheel.
Wheel installation
Clean axle pins and nuts of dirt contamination.
Do not grease thread of nuts and pins.
Check condition of pins and nuts, if necessary replace.
Place wheel on hub, tighten nuts so that wheel rim tightly fits the hub.
Lower trailer, tighten nuts according to recommended torque and given
sequence.
TIP
Wheel nuts should be tightened using a torque of 450 Nm - nuts M22x1.5.
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 (5.4) 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.