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Pronar PT512
Check the technical condition of pins and nuts, replace if necessary.
Place the wheel on hub, tighten nuts so that wheel rim is exactly fitted on the
hub.
Lower the trailer, tighten nuts according to recommended torque and given
sequence.
TIP
Wheel nuts should be tightened using a torque of 270 Nm – nuts M18x1.5.
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) by means of a torque spanner. If a torque spanner is not available, 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.
Do not grease thread of nuts and pins.
5.8
CHAPTER 5
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