Komatsu D37EX-24 Operation & Maintenance Manual page 188

MACHINE OPERATIONS AND CONTROLS
1)
Open DEF tank filler port cover (1).
For the opening and closing method of the cover, see
"METHOD FOR OPENING AND CLOSING DEF
TANK FILLER PORT COVER (3-185)".
2)
Open filler port (2) cap.
For the opening and closing method of filler port cap,
see "METHOD FOR OPENING AND CLOSING DEF
TANK FILLER PORT CAP (3-186)".
3)
While watching sight gauge (3), add DEF through filler
port (2) until float (4) reaches F line (5).
The line (6) in the sight gauge indicates approximately
5 ℓ below the line F.
Line (7) is the adding line when DEF may freeze in
cold weather.
4)
Align 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.
3-130
OPERATION