Komatsu D37EX-24 Operation & Maintenance Manual page 193

OPERATION
METHOD FOR CHECKING HORN OPERATION
1.
Turn the starting switch to ON position (B).
2.
Check that the horn sounds when the horn switch is press-
ed.
If the horn does not sound or its volume is extremely low, it
may be broken or may have an open circuit. Ask you Ko-
matsu distributor for repair.
3.
Return the starting switch back to OFF position (A).
METHOD FOR CHECKING BACKUP ALARM OPERATION STATUS
1.
Turn the starting switch to ON position (B).
2.
Operate the parking brake lever by holding the operating
portion on the top, and place the lever in LOCK position (L)
MACHINE OPERATIONS AND CONTROLS
3-135