Komatsu ecot3 WA430-6 Operation & Maintenance Manual page 121

EXPLANATION OF COMPONENTS
OPEN LOCK KNOB FOR CAB EMERGENCY ESCAPE DOOR
The door on the right side of the cab is provided as an emergency escape door for use when it is impossible to exit from the
door on the left side. Do not use it as the door for normal entry and exit from the cab.
Never operate the machine with the door open to around 90 degrees. The door may extend beyond the maximum width of the
machine or it may suddenly close if the brakes are applied. This is extremely dangerous, so never operate the machine in this
condition.
Operate the machine with the door on the right side fully closed (lock) or partially opened (quarter lock).
Use this to fix the door on the right side at the open or closed position.
1. When open lock knob (1) is pushed down securely, the lock is
applied.
When using the air conditioner or heater, carry out operations
with the knob in this position.
2. If open lock knob (1) is lifted up, the door on the right will
partially open (quarter lock).
When taking in outside air on the right side, carry out
operations with the window in this position.
METHOD OF RELEASING A LOCK IN AN EMERGENCY
If the door on the left side of the cab will not open, or it is dangerous to get on or off the machine from the door on
the left side, release the open lock of the door on the right, open the door fully, then use it to leave the operator's cab.
1. Lift open lock knob (1) up.
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CAUTION
OPERATION