Chassis Information
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E X E C U T I V E
7 • 2 2 8
The ISM engine is equipped with an engine protection system which
monitors critical engine temperature and pressures. The system will log diag-
nostic faults or codes, when an out of range condition occurs. Dash warning
lamps will illuminate when the out of range conditions exist.
When using jumper cables to start the engine, make sure the cables are
connected in parallel. That is positive (+) to positive (+) and negative (-) to
negative (-). Always connect your positive (+) before the negative (-) and
disconnect the negative (-) before the positive (+) to prevent arcing. When
using an external electrical source to start the engine, shut the disconnect
switch to OFF position.
Batteries can emit explosive gases. Always ventilate the battery compart-
ment prior to any work or service to the batteries. Extinguish all smoking
material and keep all open flame and spark producing devices away from
battery area.
In the event of a roadside emergency, contact the nearest Cummins Center
or phone 1-800-DIESELS for Cummins Customer Assistance Center.
The Allison World transmission incorporates the World Transmission
Electronic Control (WTEC) system. The system is compromised of five
major components connected by a wiring harness: the electronic control unit
(ECU), engine throttle position sensor, three speed sensors, remote shift
selector (keypad) and the control module. The ECU will process information
received from the throttle position sensor,speed sensor, pressure switch and
shift selector to activate soleniods on the control module in the transmission.
The soleniods control oncoming and offgoing clutch pressure to provide
closed loop shift control. This is accomplished by matching rpm during a
shift to an established desired profile within the ECU.
The system is monitored within the first 30 seconds of each engine start.
This is referred to as “autodetect.” Autodetect searches for presence of data
inputs or transmission components. The autodetect enables the ECU func-
tional or diagnostic response to the items which are detected.
Another feature of the transmission is the ability to “learn” or “adapt.”
The electronic control system optimizes shift quality by using “Adaptive
Shifting.” A wide variety in shifting under varied conditions will be required
before optimizing the shift quality. Generally five typical shifts of a shift type
is needed for shift calibration.
The range selection is accomplished via the remote pushbutton selector.
The selector is simplistic in appearance. The controls are R, N, D, arrow up,
arrow down, MODE buttons and a digital display window. Under normal
operations the “D” button is pressed and the digital display shows the highest
EMERGENCY
PROCEDURES
Engine Protection
System
TRANSMISSION
R
N
D
6
MODE
Содержание Executive 2001
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Страница 6: ...E X E C U T I V E SECTION 1 WARRANTY INFORMATION...
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Страница 22: ...E X E C U T I V E SECTION 2 OPERATING SAFETY...
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Страница 46: ...E X E C U T I V E SECTION 3 APPLIANCES EQUIPMENT...
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Страница 106: ...E X E C U T I V E CHAPTER 4 WATER LP GAS SYSTEMS...
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Страница 129: ...Water LP Gas Systems EXECUTIVE 4 1 2 9 NOTES...
Страница 130: ...E X E C U T I V E SECTION 5 ELECTRICAL SYSTEMS...
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Страница 177: ...Electrical Systems 5 1 7 7 EXECUTIVE N NO OT TE ES S...
Страница 178: ...E X E C U T I V E SECTION 6 UNIT CARE MAINTENANCE...
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Страница 203: ...Unit Care Maintenance EXECUTIVE 6 2 0 3 NOTES...
Страница 204: ...E X E C U T I V E SECTION 7 CHASSIS INFORMATION...
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Страница 264: ...Chassis Information EXECUTIVE 7 2 6 4 NOTES...
Страница 269: ...Chassis Information EXECUTIVE 7 2 6 9 NOTES...