MTZ 1220.1, Operator'S Manual

Page: 137 / 244

MTZ 1220.1/1220.3 Section H. Adjustments
H9
cranking of the joint, the FDA must hang
so that the front wheels be able to rotate.
1, 7, 8, 11, 12 — tapered roller bearing; 2 — adjusting shims; 3 — barrel, 4, 9 — swivel
pivot axle; 5 — bolt; 6 — adjusting shims; 10 — nut; 13 — wheel flange; 14 — driving
pinion; 15 — central bolt.
Fig. H-5
а
.
FDA adjustments made during maintenance
Checking axial play and adjusting wheel flange tapered bearings
Use an indicator to check the axial
play in the tapered bearings (11), (12)
(Fig. H-5a) measuring the displacement
of the flange (13).
The tapered bearings must have no
axial play. If any play is found, adjust the
bearings as follows:
- unscrewing the bolts, remove the cover
of the nut (10) (Fig. H-5a);
- tighten the nut to a torque of 180 to
200 N•m, then unscrew to an angle of 15
... 200. When tightening the nut, turn the
flange (13) so that the bearing rollers take
correct positions in the races;
- after adjustment, unstake the nut pilot in
two slots of the flange. Angular displace-
ment of the nut is not permissible.