2012/04/12 Caterpillar

New Engine Software Is Used on Certain Excavators {1901, 1902, 1920, 7620}

Usage:

320E AWS

Excavator: 320E (S/N: SXE1-UP; DFG1-UP; TNJ1-UP; LAK1-UP; WBK1-UP; PNL1-UP; LHN1-UP; AWS1-UP; TFX1-UP; NAZ1-UP) 323E (S/N: RAP1-UP; YRP1-UP; TDW1-UP) 324E (S/N: KTE1-UP; TLF1-UP; LDG1-UP; PNW1-UP; JCZ1-UP) 329E (S/N: WJK1-UP; RDX1-UP) 336E (S/N: YEP1-UP; BZY1-UP)

Description of Change: The new software has been improved to eliminate excess E1363: Engine Fan Speed is Low event codes during cold-weather operation.

Adaptable To: The new software is a direct replacement for the existing software and is adaptable back to first production on the serial numbers listed above. Refer to Table 1 for a list of the new part numbers and the former part numbers that are replaced.

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Table 1
New Part Number	Former Part Number
386-3132	383-6860
394-7217	388-6399
395-3301	393-1597
395-3302	392-8030

This change is effective for the serial numbers listed in Table 2.

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Table 2
Effective Serial Numbers
S/N:AWS124-UP
S/N:SXE228-UP
S/N:LAK160-UP
S/N:NAZ396-UP
S/N:TNJ193-UP
S/N:WBK683-UP
S/N:DFG196-UP
S/N:PNL170-UP
S/N:TFX212-UP
S/N:LHN132-UP
S/N:RAP326-UP
S/N:TDW204-UP
S/N:YRP140-UP
S/N:JCZ110-UP
S/N:KTE169-UP
S/N:PNW519-UP
S/N:TLF165-UP
S/N:LDG280-UP
S/N:RDX2-UP
S/N:WJK2-UP
S/N:BZY1499-UP
S/N:YEP367-UP