14-17
14. PERIODIC SERVICE
Sc2450 Operator’s Manual
■ Check the Wheel Bolt Tightening Torque
●To prevent possible roll-over of the tractor, 
check the rim, hub and wheel bolts before 
starting day’s operation.
Before starting day's operation, check tightening 
torque of each of the tire wheel bolts and, if 
necessary, retighten to the specified torque.
Check the tightening torque after the first 5, 15 and 
50 hours and thereafter every 50 hours of operation. 
If necessary, retighten to the specified torque.
For the specified torque, see the following table.
■ Check the Inflation Pressure
●ALWAYS keep the tires inflated to the correct 
pressure. NEVER exceed the recommended 
inflation pressure specified in this Operator's 
Manual.
Adjust the front and rear tires to the standard pressure. 
Check the tires for fissures and any other damages.
Before front loader work, make sure to check the tire 
pressure and, if necessary, inflate the tire(s) to the 
recommended pressure.
(a) Too high
(b) Standard
(c) Too low
Inflation pressures
Front wheel bolt (ft•lbs (N•m)) 52 - 59 (70 - 80)
Rear wheel bolt (ft•lbs (N•m)) 52 - 59 (70 - 80)
Tire size Inflation pressure
(psi(kgf/cm
2
))
Inflation pressure when an implement such as the 
front loader has been attached to the front of the 
machine (psi(kgf/cm
2
))
Front
18 × 8.50 - 10
20 (1.4) 22 (1.5)
Rear
26 × 12.00 - 12
20 (1.4) 22 (1.5)
!   WARNING!   WARNING
!   WARNING!   WARNING
3130210
(b)(a) (c)