SRT55D Off-Highway Truck
3-30
Safety, Operation and Maintenance Manual
Controls and Operating
speed before activating the lockup clutch.
Power versus Economy Mode
T h e P O W E R m o d e i s d e s i g n e d f o r
applications involving heavy loads and hilly
duty cycles where performance rather than
fuel economy is of prime importance.
The EC O N OMY mo d e is de s i g ned for
applications involving lighter loads and level
duty cycles or where fuel economy is more
important than performance.
In the ECONOMY mode, the ECU controls
operation of the lockup clutch with atimed,
preprogrammed schedule where in Second
through Sixth gears the lockup clutch is
disengaged only long enough to allow the
torque converter’s fluid coupling to absorb
shift shock. Otherwise, the lockup clutch is
engaged and no torque multiplication takes
place in Second through Sixth gears.
(5).Diagnosis switch -- This switch is provided
for the professional service technician of the
engine, and is used to retrieve fault codes of
the engine. By default, this switch is opened
by pressing its bottom (lower) part.
(6) Output stalled switch -- This switch
is provided for the professional service
technician of the transmission, and is used to
test the matching between the transmission
and the engine output torque. By default, this
switch is opened by pressing its top (upper)
part.
(7)Idling Adjustment Switch-This switch
is provided for idling adjustment function,
operator can use to increase or decrease
idling.
(8) Engine Overspeed Light (Red) -- Illuminates
when the transmission ECU senses engine
speed above 2350 r/min.
(9) Check Trans Warning Light(Red) --
Illuminates to alert of a minor fault in the
transmission s hift system or abno rmal
transmission temperature. The warning light
will come 'On' when the ignition keyswitch
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