LINES GP-HYDRAULIC OIL COOLER 2489840 - Caterpillar

(9CK685-1581) TRUCK ENGINES RATED AT 350 HORSEPOWERProblem:
Engine idle rpm may be unstable for 10 seconds on engine start up. This unstable idle rpm will ONLY exist on:350 horsepower engines in the serial number range 9CK685-1581.WITHEngine Monitoring programmed to "DERATE" or " SHUTDOWN". (If programmed to "OFF" or " ", the unstable idle rpm does NOT exist.)Solution:
A personality module update has been released to correct the unstable idle rpm. The Personality Module part number has NOT changed. ONLY the version has changed. The Service Personality Module for 3176B, 350 Horsepower is available as Part Number 1105880.Verify that the unstable idle rpm exists PRIOR to updating the Personality Module. If your dealership is equipped to FLASH PROGRAM, obtain the latest FLASH files from the CAT MAILBOX and APPLY flash file 1105878 (version 01).Please share this information with your TEPS Dealers.COPYRIGHT 1993 CATERPILLAR ALL RIGHT RESERVED