2015/03/26 Caterpillar

Backhoe Loader:

415F2 (S/N: HWA1-UP)

427F2 (S/N: HWK1-UP)

Excavator:

311F (S/N: LZF1-UP; JFT1-UP; KCW1-UP)

312F (S/N: FKE1-UP)

313F (S/N: GJD1-UP; HDK1-UP)

Pneumatic Compactor:

CW14 (S/N: LTJ1-UP)

Vibratory Asphalt Compactor:

CB44B (S/N: JXL1-UP; NSL1-UP)

CD44B (S/N: JXE1-UP)

CD54B (S/N: GRT1-UP)

Telehandler:

TH336C (S/N: MJR1-UP)

TH406C (S/N: GAT1-UP)

TH414C (S/N: KEK1-UP)

TH417C (S/N: RRJ1-UP)

TH514C (S/N: MWC1-UP)

TL642C (S/N: THG1-UP)

TL943C (S/N: THH1-UP)

Service Magazine SEPD1953, 26 March 2015, "Retaining the Engine Configuration Data when Installing New Engine Software on C3.4B Machine Engines". Disregard this previous article. Refer to the article that follows.

There have instances where the engine configuration data has been lost during the process of programming the engine Electronic Control Module (ECM) with new software.

The ECM replacement file must be saved before programming the engine ECM with new software.

Refer to Troubleshooting, "ECM Software - Install" in order to program the ECM while retaining the engine configuration data.