Komatsu ecot3 Operation And Maintenance Manual page 239

TRANSPORTATION
Stowing Radio Antenna
Loosen bolt (2) of radio antenna (1) at the rear of the cab, lower
the antenna, then tighten bolt (2) again to secure radio antenna
(1) in position.
When unloading the machine from the trailer and operating it,
follow the opposite procedure from stowing to set radio antenna
(1) vertical, then secure it in position with bolt (2).
Rearview Mirrors
The mirrors are at the positions shown in the diagram on the right.
If they are damaged, or are to be removed for shipment, or are to
be installed again, use the following procedure.
After installing the mirrors, be sure to adjust them, referring to
"Rearview Mirrors (PAGE 3-126)".
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OPERATION