Product Support Program For Replacing Engine Throttle Software On Certain 3508B, 3512B, And 3516B Marine Engines Caterpillar

Product Support Program For Replacing Engine Throttle Software On Certain 3508B, 3512B, And 3516B Marine Engines

April 8, 1997
U-95
A-80
AU-70
S-44
H-27.1
O-70
TM-2

NOTE: 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.

NOTE: This Program can be administered either before or after a failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS4033" as the Part Number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and use "T" as the SIMS Description Code. If administered after failure, use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.

Termination Date

Problem

Some 3508B, 3512B, and 3516B Marine Engines have experienced throttle software corruption. The throttle corruption may cause the engine's speed to fluctuate. The speed fluctuation is audible and can be viewed on the Electronic Technician Service Tool as a rapid rpm fluctuation when the speed burps.

NOTE: This is not a fix to synchronize multiple throttles.

Affected Product
Model & Identification Number

3508B (7SM28-65 2BM113-119 )

3512B (4TN39-89 7HM164-172 )

3516B (8KN68-123 8CN134-142 )

Parts Needed

See the attached Software Cross Reference for selecting the appropriate software.

Action Required

Flash new software onto the primary and backup Electronic Control Module (ECM).

NOTE: The new software part number is determined from the attachment. A pre-programmed control group (personality module for service replacement) can also be ordered from the parts system, but it is recommended to flash software into the ECM by down-loading software from SIS cd rom or from the Caterpillar mailbox through Hyperaccess/5.

Service Claim Allowances

Parts Disposition

Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.

Attach.

(1-Software Reference)

Software Cross Reference

Software is listed by application then number of cylinders. All engines are SCAC (Separate Circuit After Cooled) unless specified. Latest software services all Serial Numbers Back to first production, unless noted otherwise.

3508B Marine Propulsion

3508B Marine Propulsion Continued

3512B Marine Propulsion

3512B Marine Propulsion Continued

3516B Marine Propulsion