Komatsu AX20 Operation & Maintenance Manual page 89

Check item AX lug (hub) nut tightening torque
Front wheels 114 - 180 ft/lb (154 - 245 Nm) (16 - 25 kgfm)
Rear wheels 61 - 108 ft/lb (83 - 147 Nm) (8.5 - 15 kgfm)
Check item BX lug (hub) nut tightening torque
Front wheels 217 - 361 ft/lb (294 - 490 Nm) (30 - 50 kgfm)
Rear wheels 145 - 181 ft/lb (196 - 245 Nm) (20 - 25 kgfm)
*1
: Pneumatic tire lift truck only.
*2
: Except for 3-ton lift truck (uses different style rim).
• Tighten the lug nuts to the specified torque. (See "SERVICE DATA" on page 4-6 for tightening
torque.)
• Check the tires for excessive wear, damage, and adhesion of foreign matter.
• Check the tires for deformation or damage.
n CHECK OIL LEVEL IN HYDRAULIC TANK
1. Lower the forks fully to the floor and stand the mast vertically (perform on flat floor).
2. Open the engine hood and remove the dipstick (combined with breather) on the right side of the lift truck.
(Diesel engine shown at right; gasoline engine similar.)
3. Wipe off hydraulic oil with a clean cloth and insert dipstick into
the tank.
4. Take out the dipstick again and check to see if it indicates the
proper level.
5. If the oil level is low, add genuine Komatsu oil through the filler.
NOTICE
Always use genuine Komatsu hydraulic oil.
n CHECK OIL LEVEL IN BRAKE RESERVOIR TANK
1. Remove the floor plate.
2. Remove the connector of the brake fluid level sensor,
then remove the cap (1). The oil level should be in the
correct range.
Correct range (A): The oil should be within a range of
0.7 in. (18 mm).
3. If the oil level is low, add genuine Komatsu brake fluid.
NOTICE
Always use genuine Komatsu brake fluid.
4. Install the cap.
5. Install the floorboard and close the engine hood.
Tightening Torque
AX rim mating nut tightening torque
65 - 91 ft/lb (88 - 123 Nm) (9 - 12.5 kgf)
44 - 55 ft/lb (59 - 74 Nm) (6 - 7.5 kgfm)
BX rim mating nut tightening torque
145 - 217 ft/lb (196 - 294 Nm) (20 - 30 kgfm)*
65 - 91 ft/lb (88 - 123 Nm) (9 - 12.5 kgfm)
22. TRAVEL OPERATIONS
*1
*1
2
3-21