Challenger 35, Challenger 45 and Challenger 55 Agricultural Tractors Caterpillar

Note: See Video Tape, TEVN3953, "Electronic Monitoring Center: Features, Functions, and Programming". Also, refer to Operation and Maintenance Manual, "Programming Electronic Monitoring Center".

Illustration 1	g00334178

The Electronic Monitoring Center (EMC) is divided into five basic areas:

• Indicator lamps (1)

• Central display (2)

• Bargraph display (3)

• Work lamp control panel (4)

• Machine Performance Monitor (5)

Indicator Lamps

Illustration 2	g00335044

Twenty indicator lamps are provided in order to give operating information. The indicator lamps provide warning for a system that is malfunctioning.

Left Turn Signal (1) - The lamp will flash in unison with the left turn signal. An audible alarm will sound if the turn signals are left on for more than two minutes.

Trailer 2 Turn Signal (2) - The function is not currently enabled. If the frequency of the flasher decreases, this indicates that the turn signals are working for a trailer.

Trailer 1 Turn Signal (3) - The function is not currently enabled. If the frequency of the flasher decreases, this indicates that the turn signals are working for a trailer.

Trailer Brake (4) - This function is not currently enabled.

Restriction in the Air Cleaner (5) - The lamp will illuminate if a fault is experienced for more than ten seconds. A noncritical alarm will also sound. Stop the machine and service the air cleaner in order to prevent engine damage.

Air Inlet Heater (6) - The lamp will illuminate when the air inlet heater has been activated. Push the switch at the left of the steering column in order to activate the air inlet heater.

Coolant Level (7) - The lamp will illuminate when the coolant drops below the sender level. A noncritical alarm will also sound. Check for leaks and refill the cooling system.

Alternator Indicator Lamp (8) - The lamp will illuminate consistently if the alternator is not charging the battery. The lamp will flash if a system overcharge occurs. A noncritical alarm will also sound.

Aftercooler Temperature (9) - The lamp will illuminate if a overheating condition occurs. A noncritical alarm will also sound. The cause of the alarm should be corrected in order to prevent engine damage.

Transmission Pressure (10) - The lamp will illuminate if the transmission oil pressure is low. A critical alarm will sound. The word "STOP" will flash for 30 seconds before automatic engine shutdown occurs. Stop the engine and investigate the cause.

Illustration 3	g00334263

Transmission Oil Temperature and Hydraulic Oil Temperature (11) - The lamp will illuminate indicating excessive oil temperature. A critical alarm will sound. The word "STOP" will flash for 30 seconds before automatic engine shutdown occurs. Stop the engine and investigate the cause.

Filters (12) - The lamp will flash indicating a transmission filter that is becoming blocked. A noncritical alarm will sound. Service the filter as soon as possible. Do not operate the machine in this condition more than one hour. A lamp that is illuminated consistently indicates an implement and steering filter that is becoming blocked. A critical alarm will sound. This will occur for 90 seconds. The word "STOP" will then flash for 30 seconds before automatic engine shutdown occurs.

PTO Operation (13) - The lamp will illuminate while the engine is running and the PTO is engaged. The lamp will flash if the operator exits the seat during PTO operation. A five second alarm will also sound.

Programmable Upshift (14) - The lamp will illuminate when the programmable upshift is selected.

Programmable Downshift (15) - The lamp will illuminate if the programmable downshift is selected.

Track Tension (16) - The lamp will illuminate if the track tension is too low. A alarm will also sound. Stop the tractor and investigate the cause immediately.

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Braking performance can be reduced by low track tension. Reduced braking performance can cause an accident and may result in personal injury. If the track tension warning lamp is illuminated, bring the machine to a safe stop and investigate the cause. Do not operate the tractor if track tension is low.

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NOTICE
The track tensioning mechanism contains a hydraulic accumulator which acts as a spring to maintain track tension. Check the accumulator pressure whenever the track is adjusted or repaired.

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NOTICE
A rupture disc is used as a pressure release in the charging manifold for the track tensioner. Hydraulic oil pressure can increase because of low nitrogen pressure in the accumulator. In the event of tensioner overpressure, this disc will vent oil and relieve all track tension. If oil is released, have a Caterpillar dealer inspect the accumulator and check for gas leakage. Replace any accumulator that will not maintain nitrogen pressure.

Right Turn (17) - The lamp will flash in unison with the turn signal.

Note: An audible alarm will sound if the turn signals are left in the ON position for more than two minutes.

Illustration 4	g00345557

Parking Brake (18) - The lamp will illuminate if the parking brake is applied and the engine start switch key is in the ON position. Moving the transmission control lever from the NEUTRAL position will sound an alarm if the parking brake is engaged. The transmission will be disabled. A "P" prompt will flash in the display for the gears. Return the transmission control lever to the NEUTRAL position. Apply the foot brake. Release the parking brake in order to drive the machine.

An alarm will sound if the parking brake is not applied and the engine start switch key is in the off position. The alarm will sound in unison with the parking brake lamp that is flashing. This condition will occur for two minutes if the parking brake is not applied.

An alarm will sound if the following conditions occur:

• The operator leaves the seat.

• The engine is running.

• The transmission control lever is in the NEUTRAL position.

The alarm will sound in unison with the parking brake lamp that is flashing. This condition will occur for two minutes if the parking brake is not applied.

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To avoid personal injury, always apply the parking brake before leaving the operator's seat.

System Status (19) - The lamp is illuminated when all monitored systems are normal. The lamp flashes if a malfunction is detected in a monitored system.

High Beam Headlight (20) - The lamp will illuminate when the high beam lights are activated.

Central Display

Illustration 5	g00334698

The Central Display is divided into three portions. The top display indicates gear information for the transmission. The center display shows engine rpm speed. The bottom display indicates the following information:

• Accumulated engine hours (actual time)

• Machine ground speed (MPH or km/h)

• PTO speed (rpm)

• Service indicator

Transmission Gear Display

Position (1) displays a letter. Position (2) represents the selected gear.

Table 1

Gear Information for the Transmission
Letter	Gear Selection
F	Forward gear
N	Neutral
R	Reverse gear
C	Creeper speeds (if equipped)
A	Automatic shift
P	Parking brake

Note: A flashing letter (1) indicates a prompt for the operator. Return to normal operation by moving the shift control lever to NEUTRAL.

Engine RPM Speed Display

Illustration 6	g00334800

The engine rpm speed (1) will be displayed while the engine is running. The legend for engine rpm speed (2) will also be displayed. The value that is displayed is in increments of 10 engine rpm.

Note: A critical fault has been detected if the word "STOP" is displayed in the display for engine rpm speed. The engine will shut down automatically within 30 seconds if the machine experiences a critical fault.

Engine Hour Meter

Illustration 7	g00334858

Illustration 8	g00334859

Engine Hour Meter - The accumulated engine hours (1) will be displayed when the engine key start switch is turned on. A symbol for the hour meter (2) will appear in the display. The operator may manually select the hour meter while the machine is running. Press symbol (3) on the Machine Performance Monitor in order to view the engine hours.

Note: Accumulated engine hours are stored in permanent memory. Disconnecting the batteries will not affect the permanent memory.

Ground Speed

Illustration 9	g00334940

Illustration 10	g00334943

Ground Speed - Driving the machine will automatically change display (1) to ground speed. Also, ground speed can be selected manually by pressing symbol (2) on the Machine Performance Monitor. Display (1) is set at the factory to display either English units (mph) or Metric units (km/h). Also, the units can be displayed in a UK MPH version. This version displays the ground speed in mph while the rest of the units of measure are displayed in metric units. The appropriate unit can be selected by pressing the "E/M" switch (3) for 3 seconds.

Note: The ground speed is sensed from the transmission output speed. The ground speed reading can be affected by track slippage. The ground speed sensor (if equipped) will provide a true ground speed.

Note: Recalibrating the Electronic Monitoring Center can improve the accuracy of the ground speed under 16 km/h (10 mph). Use a 122 m (400 ft) course in order to calibrate the EMC. See Operation and Maintenance Manual, "Programming Electronic Monitoring Center" for more information.

Display for the Power Take-Off

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Power Take-Off - The speed of the PTO can be displayed by pressing symbol (1) on the Machine Performance Monitor.

Note: The PTO has an overspeed monitoring system. Indicator lamp (3) for the PTO will flash if the 1000 rpm PTO speed exceeds 1152 rpm. A one second alarm will sound on the first occurrence only. The lamp for system status (2) will also flash.

Service Alert Indicator

Illustration 14	g00334998

An alert indicator is provided in order to inform the operator that the machine has reached a service interval. Perform the scheduled maintenance if the word "SERVICE" (1) is flashing. See Operation and Maintenance Manual, "Programming Electronic Monitoring Center" for more information on this topic.

Bargraph Display

Electronic bargraphs are provided in order to allow the operator to monitor fuel level, engine oil pressure, coolant temperature, and hydraulic oil temperature. The bargraphs consist of 20 LCD segments. Each bargraph has a scale that indicates the level.

Fuel Level

Illustration 15	g00335081

The outside left bargraph indicates the fuel level. Each segment of the bargraph represents five percent of the fuel tank.

The bargraph will consistently flash if the fuel level decreases to only two segments on the bargraph. A noncritical alarm will also sound for one second.

Engine Oil Pressure

Illustration 16	g00335083

The bargraph that is on the inside left indicates the engine oil pressure. Normal engine oil pressure will be indicated by 16 segments or less. This corresponds with the green region on the adjacent scale.

The bargraph will flash if the engine oil pressure falls below six segments on the bargraph. A critical fault has been detected if the word "STOP" is displayed in the central display. A critical alarm will also sound. The engine will shut down automatically within 30 seconds if the machine experiences a critical fault. Stop the engine as soon as possible and investigate the cause.

Note: The bargraph only indicates engine oil pressure. The bargraph does not indicate the level of oil. The engine oil level must be checked daily with the dipstick that is provided on the left side of the engine.

Coolant Temperature

Illustration 17	g00335084

The bargraph that is on the inside right indicates engine coolant temperature. One segment will be displayed if the engine is cold. An engine that is at normal operating temperature will display 15 segments or less. This corresponds to the green region on the adjacent scale.

The bargraph will flash if the coolant temperature rises above 19 segments on the bargraph. A critical fault has been detected if the word "STOP" is displayed in the central display. A critical alarm will also sound. The engine will shut down automatically within 30 seconds if the machine experiences a critical fault. Stop the engine as soon as possible and investigate the cause.

Note: The bargraph only indicates engine coolant temperature. The bargraph does not indicate the level of coolant.

Hydraulic Oil Temperature

Illustration 18	g00335086

The bargraph that is on the outside right indicates hydraulic oil temperature. Oil that is at normal operating temperature will display 17 segments or less. This corresponds to the green region on the adjacent scale.

Segments 18 and segment 19 represent the range of caution. The range of caution is indicated by the yellow area on the scale. If necessary, reduce the load that is on the machine until the oil temperature decreases.

Segment 20 indicates overheating of the hydraulic oil. This corresponds to the red area on the scale. A critical fault has been detected if the word "STOP" is displayed in the central display. A critical alarm will also sound. The engine will shut down automatically within 30 seconds if the machine experiences a critical fault. Stop the engine as soon as possible and investigate the cause.

Work Lamp Control Panel

Illustration 19	g00644550

Note: See Operation and Maintenance Manual, "Light Switches" for detailed information.

Machine Performance Monitor

The Machine Performance Monitor is located in the lower right quadrant of the Electronic Monitoring Center (EMC). The Machine Performance Monitor includes automatic displays and selectable displays.

Automatic Display

Illustration 20	g00335132

Illustration 21	g00335138

Hitch Disabled Symbol (1) - The symbol indicates that the three-point hitch is out-of-phase with the three-point hitch control lever. See Operation and Maintenance Manual, "Three-Point Hitch Controls" for detailed information.

Hitch Position (2) - A value between 0 and 99 is displayed in order to indicate the relative position of the three-point hitch. A zero reading indicates a fully lowered three-point hitch. A reading of 99 indicates a three-point hitch that is fully raised.

Hitch Enabled Symbol (3) - The symbol indicates that the three-point hitch is phased with the three-point hitch control lever. See Operation and Maintenance Manual, "Three-Point Hitch Controls" for detailed information.

Fault Code Indicator (4) - The symbol indicates that an electrical fault has been detected. See Operation and maintenance Manual, "Programming Electronic Monitoring Center" for detailed information on reviewing fault codes.

Selectable Display

Illustration 22	g00335238

Area Per Hour - The area per hour can be displayed by pressing "AREA/HR" symbol (1) on the Machine Performance Monitor. The display indicates the predicted area for one working hour. The Machine Performance Monitor predicts the area by using the current rate of work. The area is based on an average of the last five seconds of operation.

A "FT" symbol (3) indicates that the area is measured in acres. A "METERS" symbol (3) indicates that the display is measured in hectares. The unit of measure can be changed by holding the "E/M" switch (2) for three seconds. The unit of measure can be displayed in the following three ways: English, metric and metric with a display for ground speed in mph.

Note: The implement width must be set before the"AREA/HR" will work properly. See Operation and Maintenance Manual, "Programming Electronic Monitoring Center" for more information.

Note: If the machine is not equipped with a ground speed sensor, the Machine Performance Monitor predicts the area by using the speed of the axle. Therefore, track slippage may cause the calculations to be inaccurate.

Illustration 23	g00335258

Total Accumulated Area - The accumulated area can be displayed by pressing "AREA" symbol (4) on the Machine Performance Monitor. The display indicates the total of the worked area for the machine. A "FT" symbol (6) indicates that the area is measured in acres. A "METERS" symbol (6) indicates that the area is measured in hectares. The word "AREA" (8) and the word "ON" (7) will be displayed while the Machine Performance Monitor is accumulating the area. Pressing the "START/STOP" switch (5) will stop the accumulation of area. The word "OFF" (7) indicates that the accumulation of area is stopped. Holding down the "START/STOP" switch (5) for three seconds will zero the accumulation of area. An audible beep will sound.

Note: The implement width must be set before the accumulation of area will work properly. See Operation and Maintenance Manual, "Programming Electronic Monitoring Center" for more information.

Note: On later machines, the measurement of the accumulated area can be controlled by the following three items: "START/STOP" switch, position of the three-point hitch rockshaft and implement status switch. See Operation and Maintenance Manual, "Programming Electrinic Monitoring Center-Setting Total Accumulated Area (Later Machines)" for more information.

The accumulation of area will stop when the three-point hitch is raised above 85 %. The word "OFF" (7) will also be displayed. Lowering the three-point hitch will resume the accumulation of area.

Note: On later machines, if the measurement of the accumulated area is controlled by the position of the three-point hitch rockshaft, the accumulation of area will stop when the three-point hitch is raised above 98 %. See Operation and Maintenance Manual, "Programming Electrinic Monitoring Center-Setting Total Accumulated Area (Later Machines)" for more information.

An optional implement status switch that is mounted on the implement will switch the accumulation of area on and off. These switches are available from any Caterpillar dealer. A spade terminal is provided for the connection to this switch. The terminal is located under the floormat and behind the seat. The connector is on a purple wire with a wire code of "CM40". Grounding this circuit will cause the accumulation of area to start. If necessary, the "START/STOP" switch (5) can be pressed in order to temporarily reverse the ON/OFF logic of the switch.

Illustration 24	g00335478

Track Slippage - The percent of track slippage can be displayed by pressing "SLIP" symbol (1) on the Machine Performance Monitor. The word "SLIP" (2) will be displayed. A value for track slippage (3) will also be displayed. The value for track slippage is calculated by comparing the estimated ground speed with the true ground speed. The estimated ground speed is indicated by the transmission output speed sensor. True ground speed is indicated by the ground speed sensor.

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The radar ground speed sensor emits a low intensity microwave signal which will not cause any ill effects in normal use. Although the signal intensity is low, do not look directly into the face of the sensor while in operation so as to avoid eye damage.

Note: The machine must be equipped with a ground speed sensor.

The Machine Performance Monitor automatically zeroes the track slippage as a reference. If necessary, manually zero the track slippage. Use the following procedure.

1. Raise the implement and drive the machine at a constant speed of less than 16 km/h (10 mph). Drive the machine in the same conditions as you will operate the machine.

2. Select the "SLIP" symbol (1) and hold down the "START/STOP" switch (4) for at least three seconds. A "0" in the display indicates that the zero percent reference has been recalibrated. An audible beep will also sound.

Note: The machine is designed to operate with typical track slippage of 2% to 6%. See Operation and Maintenance Manual, "Counterweight -Adjusting Machine Balance" for additional information on reducing track slippage if values are greater than 2% to 6%.

Illustration 25	g00335560

Slip Alarm - The slip alarm alerts the operator if the track slippage exceeds a preset amount. Press the "SLIP" symbol (1) in order to activate the slip alarm. An alarm will sound for one second if track slippage exceeds the preset amount. The word "ALARM" (2) will also flash. The Machine Performance Monitor will still monitor track slippage while other functions are selected. The following items are displayed if track slippage exceeds the preset amount.

• The "% SLIP" legend (3) is displayed.

• An "ALARM" legend (2) that flashes for five seconds.

• A one second alarm will sound.

The "ALARM" legend (2) will continue to flash until the track slippage falls below the preset value.

Note: The machine must be equipped with a ground speed sensor.

The percent of slippage can be set by the operator. See Operation and Maintenance Manual, "Programming Electronic Monitoring Center" for more information.

Note: A percent of slippage that is too low may activate the slip alarm during turns.

Note: See Operation and Maintenance Manual, "Three-Point Hitch Controls" for information about slip limit override.

Illustration 26	g00335579

Battery Voltage - The battery voltage can be displayed by pressing "SETUP/SELECT" switch (1) on the Machine Performance Monitor. The word "VOLTS" (2) will be displayed and the digital reading will be displayed for battery voltage. The battery voltage is displayed in one-tenth increments.

Illustration 27	g00335580

PTO Speed - Press the "SETUP/SELECT" switch (1) again in order to enter the display for the PTO. The word "1000 PTO" (2) will be displayed. The PTO rpm (3) will also be displayed. The PTO speed and the ground speed can be viewed while you are operating the machine.

Illustration 28	g00335583

Distance Measurement - The distance measurement can be displayed by pressing "SETUP/SELECT" switch (1) on the Machine Performance Monitor. An estimate of the distance that is traversed will appear in the display. The word "DIST FT" (2) indicates that the distance is measured in feet. The word "DIST METERS" (2) indicates that the distance is measured in meters. Press the "E/M" switch (3) for three seconds in order to select English units or metric units.

Press the "START/STOP" switch (4) in order to start the measurement for the distance. A digital display of the distance traversed and the word "ON" (5) will be displayed. Pressing the "START/STOP" switch (4) again will display the word "OFF" (6). Pressing the switch again will resume the measurement for distance.

The display can be reset to zero by pressing the "START/STOP" switch (4) for three seconds.

Illustration 29	g00635848

Elapsed Time - The elapsed time can be displayed by pressing "SETUP/SELECT" switch (1) on the Machine Performance Monitor. The display will appear as "00.00" (2). The display will accumulate the elapsed time in the range of "00.00" to "99.59" hours. The word "HOUR" (3) will also be displayed.

Press the "START/STOP" switch (4) in order to start the accumulation of elapsed time. Pressing the "START/STOP" switch (4) again will stop the accumulation of time.

The display can be reset to zero by pressing the "START/STOP" switch (4) for three seconds.