SHAFT AS 1940546 - Caterpillar

7X-6400 Electronic Tool Group [Digital Diagnostic Tool (DDT)]
The 7X-6400 DDT is a limited service tool for working with customer parameters on an individual type of engine.
It is the basic electronic tool for the Truck Engine DDTs. The addition of the appropriate SPM will allow it to function with 3406 Electronic Truck Engines, 3176 Truck Engines, or 3176 Engines in the Challenger 75.
It provides basic diagnostic, vehicle and engine status, and calibration displays. It also displays and allows for the modification of the respective Customer Specified Parameters.
The included 8T-5275 T-Harness supplies power to the DDT and allows it to communicate to the engine control. The 8T-5277 Cable Probe (Pulse Width Modulation Cable) is also included in the group.
DDT Service Program Modules (SPM)
The SPMs are ordered through the Caterpillar Literature System. When one is ordered you receive the SPM, a Tool Operating Manual, plastic pocket cards and decals to customize the DDT.
The version number is printed on the module and can also be displayed on the DDT screen under Mode 00.
NEXG4508 (3406B and 3406C Electronic Truck Engines) SPM : The NEXG4508 is software with no subscription for updates.
The NEXG4508 SPM is installed in the 7X-6400 DDT and turns it into a 8T-5282 DDT for 3406B and 3406C Electronic Truck Engines.
The NEXG4508 SPM provides all of the service functions for the 3406B and 3406C Electronic Truck Engine.
The present version number is V2.7.
The NEXG4508 SPM is compatible with all versions of the 3406B and 3406C Electronic Truck Engine control personality modules.
NEXG4509 (3176 Truck Engines) SPM: The NEXG4509 is software with no subscription for updates.
The NEXG4509 SPM is installed in the 7X-6400 DDT and turns it into a 7X-1055 DDT for the 3176 and 3406E Truck Engines.
The NEXG4509 SPM provides all the service functions for the 3176 and 3406E Truck Engines.
The present version number is V1.5.
The NEXG4509 SPM is compatible with all versions of the 3176 and 3406E Truck engine control personality modules.
NEXG4519 (3176 Engine in Challenger 75) SPM: The NEXG4519 is software with no subscription for updates.
The NEXG4519 SPM is installed in the 7X-6400 DDT and turns it into a 7X-1690 DDT for the 3176 Engine in the Challenger 75.
The NEXG4519 SPM provides all of the service functions for the 3176 Engine in the Challenger 75.
The present version number is V1.0.
Breakout Cables
The breakout cables help service the electronic control systems.
They provide test points for the individual wires in the wiring harnesses to aid in troubleshooting of the engine control system.
They are T cables with individual receptacles on the pigtail portion of the cables.
They can be inserted into the system wiring harness at connector locations.
The individual receptacles on the pigtails are labeled with the wire to which they are connected in the harness.
Standard probe tips, like those on multimeter leads, can be inserted into the receptacles. The cables are listed below.
8T-8726 Adapter Cable Assembly (3-Pin Breakout Cable): Used with 3-Pin circular Deutsch connectors.
8T-8694 Adapter Cable Assembly (5-Pin Breakout Cable): Used with 5-Pin circular Deutsch connectors.
8T-8695 Adapter Cable Assembly (9-Pin Breakout Cable): Used with