New Control Harness Assemblies Are Now Used on Certain G3306B Engines {1408, 1900} Caterpillar


New Control Harness Assemblies Are Now Used on Certain G3306B Engines {1408, 1900}

Usage:

G3306B R6S
Gas Engine
G3306B (S/N: R6S1-UP)

The ignition coil is applying higher than rated voltage to the ECM low side driver.

Install the new 489-9448 Control Harness As to the coils to prevent voltage spikes on the ECM low side driver.

The new parts needed are listed in Table 1.

Table 1
Part Number  Description  Qty 
343-1904  Engine Electronic Control Gp 
489-9448  Control Harness As 

This change is effective for the serial numbers S/N:R6S05226-UP



Illustration 1g03732478
(1) 489-9448 Control Harness As

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