Data Link
The Messenger display is used to continuously monitor all machine systems. The following communication links are used.
The Cat data link is a two wire system. The Cat data link allows two-way communication between the Messenger and the machine electronic control modules (ECMs). This data link also supports communication between the displays and the Cat Electronic Technician (ET) service tool.
The J1939 data link is a two wire system that allows bidirectional transfers of data at a high speed between the electronic control modules (ECMs). The J1939 is used on some applications to send information to an instrument cluster.
Caterpillar Information System:
3606 and 3608 Engines Engine Barring Group
3606 and 3608 Engines Crankcase Explosion Relief Valves
3606 and 3608 Engines Rear Gear Group
3606 and 3608 Engines Front Gear Group
3606 and 3608 Engines Camshaft
TH55FT-E70 and TH55FT-E90 Transmissions Power Train Electronic Control System Top Gear Function
3606 and 3608 Engines Crankshaft
3606 and 3608 Engines Pistons, Rings and Connecting Rods
3606 and 3608 Engines Cylinder Block, Liners and Heads
TH55FT-E70 and TH55FT-E90 Transmissions Power Train Electronic Control System General Information
3606 and 3608 Engines Separate Circuit Cooling System
TH55FT-E70 and TH55FT-E90 Petroleum Transmissions Relief Valve (Transmission Hydraulic Control) - Test and Adjust
TH48-E70-C27I, TH48-E70-C32I and TH48-E70-C32P Petroleum Power Train packages and TH48-E70 Petroleum Transmission Power Train Electronic Control System Diagnostic Code List
TH31-C9I, TH31-C9P, TH31-C9T, TH35-C11I, TH35-C13I, TH35-C13T, TH35-C15I and TH35-C15T Petroleum Power Train Packages and TH31-E61 and TH35-E81 Petroleum Transmissions Monitoring System General Information
G3500B Engines Before Starting Engine
3606 and 3608 Engines Air Starting System Operation
3606 and 3608 Engines Electrical System Operation
3606 and 3608 Engines Grounding Practices
3606 and 3608 Engines Starting Motor - Protection
3606 and 3608 Engines Magnetic Pickup
TH55FT-E70 and TH55FT-E90 Petroleum Transmissions Pressure for Transmission Lubrication - Test
3606 and 3608 Engines Circuit Breaker
2007/02/05 Potential Issues with Diodes in Alternators {1405}
14L Motor Grader Modulating Valve (Transmission Clutch) - Disassemble