Hyundai HL930A Operation & Maintenance Manual page 111

4) EMERGENCY TEST SWITCH (option)
5) DIFFERENTIAL LOCK SWITCH (option)
Manual
OFF
Auto
(3) Auto mode
Press the A of the switch for the auto mode of the differential lock function. If you press the switch,
the axle differential lock will automatically engage when the differential function is used.
While the axle differential lock function is operating, the differential lock pilot lamp
lights ON.
Refer to page 3-12 and 3-62 (diff lock foot switch).
6) EXHAUST SYSTEM CLEANING SWITCH
Safety button
(3) Auto position ( )
This position will initate a automatic exhaust system cleaning.
(4) Manual position ( )
(1) The emergency steering system can be manually tested. Push the
switch in order to determine if the emergency steering and the
emergency steering lamp are functional.
(2) When the switch is pressed, the emergency steering pump motor
will run. The emergency steering lamp will light. If the emergency
steering lamp does not light, do not operate the machine.
(1) This switch is used to apply the differential lock.
The differential lock gives equal power to both front wheels and is
used in conditions when the traction is poor.
(2) Manual mode
Press the M of the switch for the manual mode of the differential
lock function. When you press the switch, the differential lock will
engage immediately and the differential lock pilot lamp lights ON
(the buzzer sounds). The manual mode is temporarily engaged as
long as the operator pushes the switch. When the switch is re-
leased, the differential lock function is disengaged and the switch
returns to the OFF position.
(1) This switch is used to select the exhaust system cleaning.
(2) Inhibit position ( )
The inhibit position disallows any automatic or manual exhaust
system cleaning.
This may be used by operator to prevent exhaust system clean-
ing when the machine is operating in a hazardous environment
is concerned about high temperature.
It is strongly recommended that this position is only activated
when high temperatures may cause a hazardous condition.
3-53