Komatsu 530M Operation & Maintenance Manual page 61

Operation - Section 3
Page 3-18
Transmission Range Selector (2, Figure 3-4)
The Transmission Range Selector is mounted to the
right of the operator's seat.
The Transmission Range Selector has seven positions
(R, N, D, 5, 4, 3, and L). When moving the range selector
lever from ''N'' to ''R'', or from ''D'' to 5, press the lock
button on the end of the handle before moving the
selector lever.
''R'' - REVERSE position - is used to move the truck
backwards. Bring truck to a complete stop before
shifting from DRIVE to REVERSE or vice-versa. The
Reverse Warning Horn is activated when REVERSE
position is selected.
''N'' - NEUTRAL position - is used when starting the
engine, during loading operations and parking the
truck with engine running. The truck cannot be started
unless the range selector is in the ''N'' - NEUTRAL
position.
''D'' - DRIVE position - When starting from a stopped
position, the transmission will shift automatically to
second gear. As the truck ground speed increases, the
transmission will automatically upshift through each
gear to seventh gear operation. As the truck ground
speed slows down, the transmission will automatically
down shift to the correct gear for grade/load/engine
conditions.
''5, 4, 3" positions - Road and load conditions some-
times make it desirable to limit the automatic up-shift-
ing to a lower range. These positions provide more
effective retarding on grades. When the range selector
is placed in any one of these positions, the transmis-
sion will not shift above the highest gear range se-
lected. It will also down-shift to first range when
required by grade/load/engine conditions.
When conditions permit, select position ''D'' for normal
operation.
''L'' - LOW position - Use this range position when
maneuvering in tight spaces and when pulling through
mud or deep snow. Use this range position also when
driving up and down steep grades where maximum
driving power or maximum retarding is required.
Control Switches (3, 4, 6, & 7, Figure 3-4)
These switches are simple ''Rocker-type'' switches
which turn functions ''On'' and ''Off''.
"ON"
The ''On'' and ''Off'' positions are maked with
these symbols.
"OFF"
Shift Limiter Switch (3, Figure 3-4)
This switch is used to limit the highest
speed range when the transmission shift
lever is in ''D'' or ''L'' Ranges.
On/Off Range Range(s) Attainable
On ''D'' Range - F2 -- F6
''L'' Range - F1
Off ''D'' Range - F2 -- F7
''L'' Range - F1 -- F2
F1 Start Switch (4, Figure 3-4)
This switch is used to electrically assure
that the transmission always starts in
''F1". When this switch is ''On" and the
transmission range selector is moved to
a ''Forward'' range position, the transmis-
sion will shift to ''F1" to start, regardless
of the selector position.
Hoist Control Lever (5, Figure 3-4)
The hoist control is a four-function, three-position,
hand-operated lever located between the operator seat
and the Center Console.
Refer to ''OPERATING INSTRUCTIONS, DUMPING''
for more complete details concerning this control.
OM3006.2 04/98
Operator Cab and Controls