OPERATING PROCEDURES GRT655/655L OPERATOR MANUAL
4-42 Published 3-23-2020, Control # 654-04
19
Four-Wheel Drive
Indicator
Indicates the transmission is shifted to two-wheel high (refer to Drive
Axle Selector Switch, page 3-4).
Four-Wheel Drive
Engaged Indicator
(Amber)
Indicates the transmission is shifted to four-wheel low (refer to Drive
Axle Selector Switch, page 3-4).
Indicator will flash if the crane is shifted between two-wheel high and
four-wheel low and the brake pedal is not depressed and the
transmission is not in neutral.
20
Differential Lock
Indicator
Indicates the Differential Lock Switch is set to the UN-LOCK position
and the carrier differential lock located on each axle are open.
Differential Lock
Engaged Indicator
(Amber)
Indicates the Differential Lock Switch is set to the LOCK position and
the carrier differential lock located on each axle are closed (refer to
Differential Lock On/Off Switch (Optional), page 3-13). When in the
LOCK position there is no differential action between the wheels.
21
-29C° (-20°F)
Temperature Indicator
(Optional)
Indicates the ambient temperature is above -29°C (-20°F).
Below -29C° (-20°F)
Temperature Indicator
(Red)
Indicates the ambient temperature is below -29°C (-20°F). All crane
functions are locked out.
Item Description Graphic Explanation
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