PRONAR T679/3, Operator'S Manual, Page: 80 / 117

PRONAR T679/3 PRONAR T679/4 SECTION 5
5.6
Tighten castellated nut in order to
eliminate slackness.
Wheel should rotate with insignificant
resistance.
Undo nut (not less than 1/3 rotation) to
align the nearest thread groove with the
opening in wheel half axle pin. Wheel
should rotate without excessive
resistance.
Nut may not be excessively tightened.
Do not apply excessive pressure
because working conditions of the
bearings may deteriorate.
Secure castellated nut with cotter pin and mount hub cap.
Delicately tap hub cap with rubber or wooden hammer.
5.2.4 MOUNTING AND DISMOUNTING WHEEL, INSPECTION OF
WHEEL NUT TIGHTENING.
Dismounting wheel
Place chocks under wheel that will not be
dismounted.
Ensure that trailer shall not move during
wheel dismounting.
Loosen wheel nuts according to the
sequence shown in figure (5.4).
Place lifting jack and lift trailer.
The lifting jack should have sufficient
lifting capacity and should be
technically reliable.
FIGURE 5.3 Adjustment of slackness
(1) hub cover, (2) castellated nut, (3) cotter pin
FIGURE 5.4 Sequence of undoing and
tightening nuts