5033360 JOHNSON CAM, DECOMPRESSION

Connecting Cat ET to the Junction box
Table 1
Tools Needed     Qty    
This PC configuration is recommended:
Intel Pentium II 333 mHz processor
64 megabyte of RAM
4.3 GB hard drive
Drive for floppy disks (3.5 inch with 1.44 MB)
14X speed CD-ROM drive
VGA monitor or display
RS-232 port with 16550AF UART
Windows NT 4.0 (1)
Windows 95 (1)
Windows 98 (1)
Mouse     1    
This PC configuration has the minimum requirements:
IBM PC compatible 100 MHz processor
32 megabyte of RAM
10 MB of available hard drive space
CD-ROM drive
Drive for floppy disks (3.5 inch with 1.44 MB)
Windows NT 4.0 (1)
Windows 95 (1)
Windows 98 (1)
RS-232 port with 16550AF UART
VGA monitor or display
Mouse     1    
Single user license for Cat ET
Use the most recent version of this software.
"JERD2124"     1    
Software
Data subscription for all engines
"JERD2129"     1    
160-0141 Adapter Cable     1    
171-4401 Communication Adapter II     1    
160-0133 Adapter Cable (CAT Data Link)     1    
7X-1414 Adapter Cable     1    
( 1 ) Any of these operating systems are acceptable.
Illustration 1 g00942864
(1) PC (2) 196-0055 Serial Cable or the 160-0141 Serial Cable (3) 171-4401 Communication Adapter II (4) 207-6845 Adapter Cable (5) 7X-1414 Data Link Cable
Connect cable (2) to the RS232 serial port of PC (1) .
Connect cable (2) to communication adapter (3) .
Connect cable (4) to communication adapter (3) .
Connect cable (4) to cable (5) .
Connect cable (5) to the service tool connector on the junction box.
Turn the engine control switch to the STOP position. The engine should be OFF.When the system has power, Cat ET and the communication adapter will establish communication with the EIS control module. If this does not occur, refer to the engine's Electronic Troubleshooting manual.Connecting the DDT to the Junction box
Table 2
Tools Needed     Quantity    
7X-1400 Electronic Tool Group     1    
7X-1414 Adapter Cable As     1    
7X-1685 Adapter Cable As     1    
Service Program Module, NEGX4511     1    Note: The 7X-1400 Electronic Tool Group is also called the Digital Diagnostic Tool (DDT).
Illustration 2 g00819907
(1) 7X-1414 Adapter Cable As (2) 7X-1685 Adapter Cable As (3) 7X-1400 Electronic Tool Group (DDT)
Connect cable (1) to the service tool connector on the engine mounted junction box.
Connect cable (2) to cable (1) .
Connect DDT (3) to cable (2) .The other connector on cable (2) is not used.When the system has power, the DDT will establish communication with the EIS control module. If this does not occur, refer to the engine's Electronic Troubleshooting manual.Programming the Electronic Ignition System
For information on the programmable parameters, refer to Systems Operation, "Electronic Control System Parameters".Use Cat ET or the DDT to program the parameters. The description of the parameter depends on the electronic service tool that is used. The parameters are listed in Table 3. Record the values for the parameters.
Table 3
Programmable Parameters for the Electronic Ignition System    
Cat ET
Description     DDT
Description    
"Desired Engine Ignition Timing"     "DES ENG TIMING"    
"Speed Timing Map"     "SPEED TIMING MAP"    
"Engine Load Timing Map"     "LOAD TIMING MAP"    
"Engine Configuration"     "ENGINE TYPE"    
"Number of Detonation Sensors"     "DET SENSORS"    
"Engine Compression Ratio"     "COMPRESSION"    Recommendations for Programming the Parameters
"Desired Engine Ignition Timing" or "DES ENG TIMING"
For the desired engine timing, obtain an analysis of the fuel. Enter the data from the fuel analysis into the Caterpillar Software Program, LEKQ6378, "Methane Number Program". Program the value for the desired timing according to the recommendations in Engine Performance, LEBQ6484, "Fuel Usage Guide"."Speed Timing Map" or "SPEED TIMING MAP"
Program this parameter to the full load rpm that is printed on the engine's Information Plate."Engine Load Timing Map" or "LOAD TIMING MAP"
For normal operation, the recommended value for this parameter is "00"."Engine Configuration" or "ENGINE TYPE"
Program this parameter to the engine model that is printed on the engine's Serial Number Plate."Number of Detonation Sensors" or "DET SENSORS"
This parameter must be programmed in order for the electronic ignition system to provide protection from detonation. The engine has two detonation sensors. Make sure that the value for this parameter is programmed to "2"."Engine Compression Rati