PRONAR PT510, Operator'S Manual, Page: 99 / 133

SECTION 5 Pronar PT510
5.7
Undo nut (not less than 1/3 rotation) to align the nearest thread groove with
the opening in wheel axle pin. Wheel should rotate without excessive
resistance.
The nut must 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 the hub cap.
Delicately tap the hub cap with rubber or wooden mallet.
The wheel should turn smoothly without stiffness or detectable resistance not originating from
abrasion of brake shoes in brake drum. Adjustment of bearing slackness may only be
conducted when the trailer is hitched to tractor and the load box is empty.
TIP
If the wheel is dismounted, bearing looseness is easy to check and adjust.
5.2.5 MOUNTING AND DISMOUNTING WHEEL, INSPECTION OF WHEEL NUT
TIGHTENING
Wheel dismounting
Immobilise trailer with parking brake.
Place chocks under the wheel that will not be dismounted.
Ensure that trailer shall not move during wheel dismounting.
Loosen wheel nuts according to sequence given in figure (5.3).
Place a lifting jack and raise the trailer – figure (5.1).
Dismount wheel.
Wheel installation
Clean axle pins and nuts of contamination.
Do not grease thread of nuts and pins.
Check condition of pins and nuts, if necessary replace them.