MacDon M155 Operators Manual - Manual (Page 393)

MAINTENANCE AND SERVICING
Measure tire pressure annually with a gauge. Caster tire pressure should be 10 psi (69 kPa).
To maintain pressure, visually check daily that tires have not lost pressure, and adjust pressure as needed.
Under-inflation of tires can cause side wall cracks.
NOTE: If caster wheels shimmy, a possible cause is over-inflation.
Table 5.21 Caster Tire Options
Caster Tire Options
Formed Caster Forked Caster
7.5 – 16SL Single Rib, 10 - 16 Front Steer Tire
16.5L – 16.1 Rib Implement Flotation, 10 –
16 Front Steer Tire
10 psi (69 kPa) 10 psi (69 kPa)
Caster Wheel Nut Torque
At first use or when a wheel is removed, check wheel nut/bolt torque every 15 minutes on the road or 1 hour in the
field until the specified torque is maintained.
Continue with a checking schedule of 10 and 50 hours (field or road operation) and then every 200 hour
intervals thereafter.
Forked Caster:
1. Torque wheel nuts (A) to 120 ft·lbf (163 N·m) using the
tightening sequence shown.
Figure 5.221: Caster Wheel Nuts
Formed Caster:
2. Position wheel assembly (B) on hub and install wheel
bolts (A).
3. Torque bolts (A) to 120 ft·lbf (163 N·m)..
Figure 5.222: Caster Wheel Nuts
169883
377
Revision A