Komatsu D51EX-24, Operation & Maintenance Manual

Page: 318 / 382

1.
Remove the bolt (1) and loosen the bolt (2).
2.
Remove all the shims (3) and tighten the bolts (1) and (2)
lightly so that the dimension of clearance (A) becomes
even at whole circumference.
3.
Measure the clearance (A) and set the shim thickness so
that it is between (A + 0.2) and (A + 1.2) mm.
The shim thickness can be set by removing some shims
from the number of shims to use.
Shim thickness (number of shims to use): 0.5 mm (2
pieces), 1.0 mm (4 pieces)
4.
Restore the shims of the thickness which is set in step 3 to
the original position, and tighten the bolts (1) and (2) light-
ly.
5.
Angle and tilt the blade to check the play at pitch ball por-
tion.
• When no creak sound is heard and the blade moves
smoothly, the adjustment is completed.
• If a creak sound is heard or the blade does not move
smoothly, add shims.
• If the play at the ball portion is still large, remove more shims.
6.
After adjusting, tighten the bolts (1) and (2).
Tightening torque: 823 to 1029 Nm {84 to 105 kgm}
CHECKS BEFORE STARTING
For the following items, see OPERATION, “METHOD FOR CHECKING BEFORE STARTING”.
• Method for draining water and sediment from fuel tank
• Method for checking water separator, draining water and sediment
• Method for checking oil level in hydraulic tank, adding oil
• Method for checking coolant level, adding coolant
• Method for checking oil level in engine oil pan, adding oil
• Method for checking dust indicator
• Method for checking electric wiring
• Method for checking fuel level, adding fuel
• Method for checking DEF level, adding DEF
• Method for checking lamps operation
• Method for checking machine monitor
• Method for removing deposit in engine compartment
• Method for checking horn operation
• Method for checking backup alarm operation status
• Method for testing deceleration/brake pedal
EVERY 50 HOURS MAINTENANCE
METHOD FOR LUBRICATING
NOTICE
Perform the lubrication every 10 hours when the machine is operated on the soft ground, etc., and the
soil and sand are accumulated on the machine.
1.
Lower the blade to the ground and stop the engine.
MAINTENANCE PROCEDURE MAINTENANCE
4-42