TUBE AS 3573726 - Caterpillar

Caterpillar: Confidential Yellow
PARTIAL CREDIT AVAILABLE FOR SALES OF VALVE SPRING PRODUCT UPDATES FOR CERTAIN 3208 N/A ENGINES PI7007 WORLDWIDE (IN CLUDING ALL TEPS) EXCEPT COSA, BRAZIL SEE JUNE 27,1983 SERVICE LETTER
  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.
PARTIAL CREDIT AVAILABLE FOR SALES OF VALVE SPRING PRODUCT UPDATES FOR CERTAIN 3208 NA ENGINES, 1100, 1108, PI7007 U-27 A-25 AU-22 C-26 E-24 TT-3 TA-1 TM-3 INTRODUCTION The purpose of this Product Improvement Program is to provide an incentive for dealers to SELL the stronger valve springs for the 3208 NA (Naturally-Aspirated) Engines. Through this Program Caterpillar will provide a flat rate contribution of $50 (U.S.) for each valve spring update SOLD on the listed models. See Engine Product Update Guide, PEGP2811, Page 16 (Product Update U133) Parts Departments at Caterpillar dealers have received information on how to sell this update in ENG 83-4. The new valve spring and associated hardware have been in production and available for parts service since the first quarter of 1981. The new springs have a larger diameter wire and coil, and thus lower stress than the former springs. The new valve springs are a recommended Product Update which greatly reduces the possibility of failure and unscheduled downtime, and provides the user with a product improvement not available when the engine was built. For more information, refer to the following publications: Service Magazine dated April 4, 1983 Truck Engine News (Next Issue) Engine News (Next Issue) Engine Product Update Guide, PEGP2811, Page 16; Update U133 Special Instruction, SMHS8167, Installation Of 1W4259 Valve Springs Special Instruction, SMHS8131, Use Of 6V7028 Spring Seat Enlarger Affected Engines And Parts Needed All the listed naturally-aspirated models are included in this Program provided they are also within the age limitations in the following list, and the valve spring update is a revenue sale. There are no km (mile) or hour limitations. (SEE ILLUSTRATION) Action Requested (Change Parts Stock Records) Dealers are urged to promote sales of this valve spring Product Update U133 on all the listed models. The Program APPLIES ONLY TO REVENUE SALES of the valve spring update completed after the announcement date of this Service Letter. Engines updated as a result of a warrantable valve spring failure are not eligible for this contribution. The Caterpillar contribution can be used to reduce your retail price of the valve spring update, or as a sales incentive, or as a method to increase the profit of the sale. All the new parts must be installed at the same time on all 16 valves. Do not mix former and new parts on the same head or engine. Use Special Instruction SMHS8167 for the correct procedure to install these larger springs. Also, for engines with serial numbers 90N1-90N17385 or