Product Support Program For Flashing New Performance Parameters For Certain 550 HP And 475 HP @ 1750 Lb Ft Of Torque Rated 3406E Truck Engines Caterpillar

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 only be administered after a failure occurs. The decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS0869" as the Part Number and "7755" as the Group Number. Use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.

NOTE: This Revised Service Letter replaces the July 16, 1995 Service Letter. Changes have been made to the Termination Date.

NOTE: This program can only be administered if the customer has returned after PS0843 has been performed or in conjunction with that program if the first-time complaint is:

1. The engine histograms indicate higher than normal vehicle speeds.

and/or

2. The engine RPM histograms indicate significant time is spent at or above 1700 RPM.

Termination Date

Problem

Some customers may complain of low power on certain 500 HP and 475 HP @ 1750 lb ft of torque rated 3406E Truck Engines.

Affected Product
Model & Identification Number

3406E (5EK1-Up)

NOTE: This Program only applies to 3406E Truck Engines within the above serial number range that are rated at 500 HP or 475 HP @ 1750 lb ft of torque.

Parts Needed

Not applicable

Action Required

1. The owner of the truck must be contacted by the repairing dealer and notified of the potential impact on fuel economy if the Top Engine Limit is set above 1900 RPM.

2. Flash the engine with the new High RPM Performance rating:

Flash file 128-6848 for 475 HP @ 1750 lb ft of torque engines without Brakesaver.

Flash file 128-6851 for 475 HP @ 1750 lb ft of torque engines with Brakesaver.

Flash file 126-3887 for 500 HP engines without Brakesaver.

Flash file 128-6569 for 500 HP engines with Brakesaver.

3. Set the Top Engine Limit (TEL) at the customer specified limit up to 2120 RPM.

4. Record the final TEL setting in the COMMENTS SECTION of the warranty claim.

a. FINAL Top Engine Limit (TEL____)

b. % time 1700 RPM or above (R__)

c. % time 65 MPH or above (M__)

d. % time idling (I__)

Service Claim Allowances

NOTE: This is a .5 hour job.

NOTE: If this Program is done in conjunction with PS0843, submit only one claim against PS0869 and claim 1.5 hour total time.The SIMS report will be automatically generated for PS0843.