2015/05/01 Caterpillar

Engine:

3176B (S/N: 9WK1-UP)

3408B (S/N: 8RG1-UP)

3408C (S/N: 8RG1-UP)

3412 (S/N: 3JK1-UP)

3412C (S/N: 3JK1-UP)

3508 (S/N: 3PS1-UP)

3508B (S/N: 2BM1-UP)

3512 (S/N: 3RS1-UP)

3512B (S/N: 4TN1-UP; 2GW1-UP)

3516 (S/N: 3SS1-UP)

3516B (S/N: 8CN1-UP; 8KN1-UP; 3CW1-UP)

Marine Engine:

3126B MARINE (S/N: 9ZF1-UP; 3GS1-UP)

3176C MARINE (S/N: 6BW1-UP)

3196 MARINE (S/N: 2XR1-UP)

3406E MARINE (S/N: 9WR1-UP)

3408C MARINE (S/N: 1TS1-UP)

3412E MARINE (S/N: 9KS1-UP; 9PW1-UP)

ReferenceService Magazine, SEBD9279, "Identification Of The Data Booster Within The Wiring Harness"

ReferenceService Magazine, SEBD9254, "Electronic Control Group (Data Booster) Available In Order To Enhance The Signal From The Electronic Control Module (ECM) To The Receiving Device"

A Resistor Gp may be needed in order for the EMS-III to function correctly when monitoring systems are replaced by EMS-III.

When using the Resister Gp on the 252-4501 Electronic Control Module and 252-4503 Electronic Control Module that have replaced previous monitoring systems, the following symptoms are improved:

• Erratic Tachometer

• Pressures are 0 and temperatures are 32 when scrolling through the GA readings

• The temperature and pressure quad gauge is inoperable after the full sweep after power up

143-4518 Resistor Gp is added to the harness of each engine that communicates with an EMS-III. One booster is needed for each PEEC controller.

The new part numbers are listed in Table1.