NOTE: Blackout switch (20) provides overall control of
all lamps on the machine. The position of the three
control levers on the blackout switch determines
which machine lamps are illuminated and the
illumination level of all instrument panel lamps.
UNLOCK (30)—Hold lever (B) in the UNLOCK position
to allow lever (A) to move into BLACKOUT DRIVE (21),
STOP LIGHT (24), or SERVICE DRIVE (25).
LOCK (31)—When lever (B) is in the LOCK position,
movement of lever (A) is restricted.
NOTE: When lever (B) is in the LOCK position (31)
and lever (A) is in the OFF position (23), lever (A) can
only be moved into BLACKOUT MARKER (22).
However, lever (A) can be moved into OFF (23) from
BLACKOUT DRIVE (21), BLACKOUT MARKER (22),
STOP LIGHT (24), or SERVICE DRIVE (25) with lever
(B) in the LOCK position.
BLACKOUT DRIVE (21)—Move lever (A) into the
BLACKOUT DRIVE position to enable the following
lamps to function:
• Blackout Head Lamp (36)
• Right and Left Blackout Tail Lamps (41)
• Right and Left Blackout Marker Lamps (34)
• Right and Left Blackout Brake Lamps (38)
• Tension Fail Indicator (49)
• Low Brake Pressure Indicator (43)
• Blade Down Indicator (50)
• Engine Oil Pressure Indicator (44)
• Hydraulic Oil Temperature Indicator (54)
BLACKOUT MARKER (22)—Move lever (A) into the
BLACKOUT MARKER position to enable the following
lamps to function:
• Right and Left Blackout Tail Lamps (41)
• Right and Left Blackout Marker Lamps (34)
• Right and Left Blackout Brake Lamps (38)
• Tension Fail Indicator (49)
• Low Brake Pressure Indicator (43)
• Blade Down Indicator (50)
• Engine Oil Pressure Indicator (44)
• Hydraulic Oil Temperature Indicator (54)
OFF (23)—Move lever (A) into the OFF position to
disable all lights except:
• Tension Fail Indicator (49)
• Low Brake Pressure Indicator (43)
• Blade Down Indicator (50)
• Engine Oil Pressure Indicator (44)
• Hydraulic Oil Temperature Indicator (54)
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Operation Section
Monitoring Systems and Cab Features
TM5-2430-200-10
