8M2001655 Mercruiser NUT

Required Service Tools
The tools that are listed in Table 1 are required in order to enable a service technician to perform the test procedures that are found in this manual.
Table 1
Required Service Tools    
Part Number    Description    
N/A     4 mm Allen wrench    
N/A     Vacuum pump test unit    
1U-5805     Wire removal tool (14-AWG)    
121-9587     Wire removal tool (16-AWG To 18-AWG)    
146-4080     Digital multimeter group    
7x-1710     Multimeter probe    
6V-2197
6V-3093
7X-1695     Magnetic transducer
Transducer adapter
Cable as    
7X-1710     Multimeter probe    
146-4080     Digital multimeter group (RS232)    
7X-1710     Multimeter probes    
9U-7250
or
9U-7246     Connector repair kit with crimping tool
Connector repair kit without crimping tool    Two short jumper wires are needed to check the continuity of some wiring harness circuits by shorting two adjacent terminals together in a connector. A long extension wire may also be needed to check the continuity of some wiring harness circuits.Optional Service Tools
Table 2 lists the optional service tools that may be needed during testing or repair.
Table 2
Optional Service Tools    
Part Number    Description    
1U-5470 (1)     Engine pressure group    
4C-4911 (2)     Battery load tester    
6V-9130 (3)     Temperature adapter (MULTIMETER)    
7X-1180 (4)     Internal expansion board for ECAP    
8T-8697 (5)     Electronic Control Analyzer Programmer (ECAP)    
9S-9082     Engine turning tool    
9U-7554 (6)     A rechargeable portable printer maybe needed to print parameters, sensor readings, etc.    
( 1 ) The 6V-9450 Engine Pressure Group may be used instead. Refer to SEHS8524, SEES5677.
( 2 ) Refer to Special Instructions, SEHS9249, "Use of 4C-4911 Battery Load Tester for 6, 8, and 12 Volt Lead Acid Batteries" and Special Instructions, SEHS7633, "Battery Test Procedure".
( 3 ) Refer to Special Instructions, SEHS8382, "Use of the 6V-9130 Temperature Adapter Group".
( 4 ) Refer to Operating Manual, SEHS8834, "Installing the 7X-1180 Internal Expansion Board in the 8T-8697 ECAP Service Tool".
( 5 ) Refer to Special Instruction, SEHS8742, "Using the 8T-8697 Electronic Control Analyzer Programmer (ECAP)".
( 6 ) Refer to Operating Manual, NEHS0614.Caterpillar Electronic Technician (Cat ET)
Cat ET can display the following information:
Parameters
Event codes
Diagnostic codes
Engine configurationCat ET can be used by the technician to perform the following functions:
Diagnostic tests
Sensor calibrations
Flash programming
Set parametersThe following components are required to use Cat ET to service the engine.
Table 3
Required Electronic Service Tools for the Use of Cat ET    
Part Number    Description    
JERD2124     "Electronic Technician Program" (ET)    
JERD2129     "Data Subscription for All Engines and Machines"    
171-4400 (1)     Communication Adapter II Gp    
( 1 ) The 7X-1700 Communication Adapter Gp may also be used.Note: For more information regarding the use of Cat ET and the PC requirements for Cat ET, refer to the documentation that accompanies your Cat ET software.Connecting Cat ET and the Communication Adapter II
Illustration 1 g00647144
(1) Personal computer (PC) (2) 160-0141 Adapter Cable (PC Serial) (3) 171-4401 Communication Adapter II (4) 207-6845 Adapter Cable (Data Link)Note: Items (2), (3), and (4) are part of the 171-4400 Communication Adapter II Gp .Use the following procedure to connect Cat ET and the Communication Adapter II.
Turn the keyswitch to the OFF/RESET position. If the keyswitch is not placed in the OFF/RESET position, the engine may start.
Connect cable (2) between the "COMPUTER" end of communication adapter (3) and the RS232 serial port of PC (1) .
Connect cable (4) between the "DATA LINK" end of communication adapter (3) and the service tool connector.
Turn the keyswitch to the ON position. If Cat ET and the communication adapter do not communicate with the ECM, refer to Troubleshooting, "Electronic Service Tool Will Not Communicate With ECM".