Komatsu GALEO HM350-2 Operation & Maintenance Manual page 94

OPERATION
EXPLANATION OF COMPONENTS
RETARDER CONTROL LEVER
CAUTION
The retarder must not be used as a parking brake.
Use this lever (5) to operate the retarder when traveling downhill.
The more the lever is pulled, the greater the braking force
becomes.
When the retarder is operated, the retarder operation lamp lights
up.
When leaving the operator's seat, always apply the parking brake.
LEFT AND RIGHT DIFFERENTIAL LOCK PEDAL
This pedal (6) is used to actuate the left and right differential lock.
When the pedal is depressed, the left and right differential lock is
actuated according to the position of the left and right differential
lock switch. When the pedal is released, the left and right
differential lock is canceled.
DUMP LEVER LOCK KNOB
WARNING
When carrying out inspection of the machine with the dump body raised,
always set the dump lever to the HOLD position, lock with the dump lever
lock knob, then use the body pivot pin.
This device (7) is used to lock the dump lever.
To set to the FREE position, pull the lock knob up until it stops, then
turn it to lock it in position.
To set to the LOCK position, pull the lock knob up, then turn it to
release the lock. The knob will be pushed in by the force of the
spring, and the lock will be applied. After doing this, check that the
dump lever is locked.
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