Komatsu GD555-5 Operation & Maintenance Manual page 274

MAINTENANCE
CHECK ELECTRICAL INTAKE AIR HEATER
Before the start of the cold season (once a year), contact your Komatsu distributor to have the electrical intake air
heater repaired or checked for dirt or disconnections.
REPLACE THE CUTTING EDGES, REVERSE AND REPLACE END BIT
Do not raise the blade unnecessarily high. Be sure not to put any part of your body underneath the blade when blocking it.
Replace the cutting edge before it wears to the end face of the blade.
Always replace the cutting edge and side edge when the distance from the blade holder is less than 10 mm (0.4 in).
If the mounting surface is worn, correct the mounting surface before replacing the cutting edge or side edge.
1. Lift the blade to a suitable height and put a block underneath the blade rail to prevent it from falling.
2. Remove bolts and nuts (1), then remove end bit and the cutting
edge.
3. Clean the mounting face for cutting edge.
4. Install a new cutting edge to the blade.
5. If the cutting portion (outside) of the side edge is worn, reverse
the side edges and install them on the opposite side, or replace
the side edges.
Tightening torque of mounting nut: 260 ± 34.3 Nm
6. After several hours of running, retighten the nuts.
Replacement of cutting edge for front blade
(If equipped)
Replace the cutting edge with the same procedure as that of main
blade.
Since front blade does not have a blade guide rail, put a block
under the support of front blade before work.
WARNING
(26.5 ± 3.5 kgm ,
191.7 ± 25.3 lbft)
SERVICE PROCEDURE
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