Komatsu GD555-5 Operation & Maintenance Manual page 167

OPERATION OPERATION
3. Return inching pedal (2) back gradually, while keeping brake
pedal (1) depressed.
By returning inching pedal (2) back, the transmission starts to
transmit the power.
NOTICE
In starting operations of the machine, provide an interval of at least 2
seconds between the operations of procedure 2. and procedure 3.
4. When the transmission starts to transmit the power, release
brake pedal (1), return inching pedal (2) back, and then
depress accelerator pedal (4). The machine starts.
NOTICE
If releasing brake pedal (1) on slope before the transmission starts to
transmit the power, the machine may slip down.
REMARK
If carrying out a direction switching operation during travels, the gear speed probably shift down sequentially
before the directional change, for the protection of the passenger and machine. This is not abnormal.
Although, for safety, it is not possible to complete the direction change until the travel speed slows down to 4 km/h
(2.5 MPH) or lower, it is not abnormal. If reducing the travel speed down to 4 km/h (2.5 MPH) or lower by using
the brake during the direction switching operation, the direction changes automatically.
WHEN SELECTING TORQUE CONVERTER AUTO MODE
1. Depress brake pedal (1) to stop the machine.
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OPERATION OPERATION