CYLINDER GP-AIR OVER HYD 7V0430 - Caterpillar

Install Updated Software In Certain 3508B, 3512B And 3516B Marine Engines
SMCS - 1920 PI3078
October 9, 1997
U-299
A-266
S-144
O-255
TM-16 The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.
This Program must be administered as soon as possible. When reporting the repair, use "PI3078" as the Part Number, "7751" as the Group Number, "56" as the Warranty Claim Description Code and "T" as the SIMS Description Code. Exception: If the repair is done after failure, use "PI3078" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code.
Refer to your Warranty Bulletin for detailed information with regard to Product Improvement Programs.
Completion Date
April 30, 1998Termination Date
October 31, 1998Problem
Due to a software problem the backup Electronic Control Module (ECM) will assume control of the engine if the engine is restarted from a remote start/stop switch (i.e. pilot house panel) without first cycling the power to the ECM.
Affected Product
Model & Identification Number
3508B (7SM77-90)
3512B (7HM174, 7HM175 4TN96-105 )
3516B (8CN144, 8CN145 8KN143-174 )
Parts Needed
Updated Flash File Software (refer to the "Action Required")
Action Required
Determine the most current software part number containing the update for the engine by reviewing the FIND system text file: "3500B Commercial Engine (Built >4/97)" located in document type "Flash File Cross-Reference" (FLASH) or same file name on the SIS tool guide and setup cd.
Flash the updated software into the primary and backup Electronic Control Module (ECM).
Reference the July 1997 Engine News article entitled "Software Serviceability".
Owner Notification
U.S. and Canadian owners will receive the attached Owner Notification.
Service Claim Allowances
This is a 2.5-hour job.
Parts Disposition
Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.
MAKE EVERY EFFORT TO COMPLETE THIS PROGRAM AS SOON AS POSSIBLE.
Attach.(1-Owner Notification)Copy Of Owner Notification For U.S. And Canadian Owners