Komatsu D61EX-24 Operation & Maintenance Manual page 215

MACHINE OPERATIONS AND CONTROLS
Align the claw (8) of the cap with groove (9) of the filler
port and close the cap securely by turning it clockwise
by 90 °.
REMARK
• It is recommended to use a nozzle having a diameter and a length specified by ISO 22241-4 and an auto
stop function to add DEF. When the specified nozzle is used, the magnet installed inside the filler port of the
tank cancels the wrong fluid addition prevention device, and you can add DEF. This mechanism prevents
addition of DEF into the fuel tank, addition of fuel into DEF tank, and spill of DEF from the filler port.
• When using a nozzle which is not conformed to ISO 22241-4, hold it in your hand and add DEF carefully
while checking the sight gauge.
• If it is difficult to see the sight gauge due to dirt, etc., re-
move mounting bolts (B), remove cover (A), and wipe off
dirt on the surface of the sight gauge.
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OPERATION