866927 Volvo.Penta Cable kit

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PSP FOR REPLACING UNIT INJECTOR RETURN SPRINGS ON CERTAIN D11N TRACTORS; 776B TRACTORS; 777B, 785, 789 TRUCKS; 3508, 3512, 351 6 ENGINES - PS4591 - MAILED BRAZIL
  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.
May 31, 1991 B-18 PRODUCT SUPPORT PROGRAM FOR REPLACING UNIT INJECTOR RETURN SPRINGS ON CERTAIN D11N TRACTORS; 776B TRACTORS; 777B, 785, AND 789 TRUCKS; AND 3508, 3512, AND 3516 ENGINES. 1290 PS0548 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 "PS0548" as Part Number, "7755" as Group Number, and "96" as Description Code. Although this Program can only be administered after failure on the Affected Product, parts stock should be reworked as soon as possible. Termination Date
May 31, 1992
Problem
The return springs for Type 2 unit injectors on certain D11N Tractors; 776B Tractors; 777B, 785, and 789 Trucks; and 3508, 3512, and 3516 Engines may fail in some applications. Type 2 injectors are described on page 10 of the October 2, 1989 Service Magazine.
Affected Product
Model Identification Number D11N 74Z1-862 776B 6JC1-83 777B 4YC1-1486, 1493 785 8GB1-443, 445-449, 461, 473 789 9ZC1-493, 495-501 3508 1ZF1-560 95Y1-775 96Y1-1111 97Y1-672 23Z1-3267 68Z1-768 69Z1-547 70Z1-765 3512 3YF1-530 49Y1-587 50Y1-907 51Y1-624 24Z1-3443 65Z1-708 66Z1-412 67Z1-778 3516 4XF1-349 9KF1-54 5MJ1-24 25Z1-2015 27Z1-679 28Z1-621 29Z1-941 71Z1-294 72Z1-399 73Z1-395
Parts Needed
1 - 4P3487 Spring 1 - 6V1250 Seal (Use as required per injector) 2 - 8J8725 Seal (Use as required per injector)
Action Required
Type 2 injectors are described on page 10 of the October 2, 1989 Service Magazine. **** Parts Stock **** Replace the unit injector return spring on the following fuel injectors parts stock if the existing spring has a white or a pink paint stripe on it. The new 4P3487 Springs have a blue paint stripe on them. NEW REMANUFACTURED 7C4173 0R2922 7C4174 0R2923 7C4175 0R2924 7C9576 0R1759 7C9577 0R1758 7C9578 0R1757 / 0R1756 7C9579 0R2927 7C9580 0R2928 7C9581 0R2926 7E3381 0R3051 7E3382 0R2921 7E3383 0R2925 7E3384 0R3052 ***** Affected Product ***** Replace the spring on the failed injector and install the new spring on all of remaining injectors. See Special Instruction SEHS9287 "Spring Replacement for Type 2 Fuel Injectors." The procedure and tooling described in the Special Instruction must be used to replace the injector springs.
Service Claim Allowances
***** Parts Stock ***** Submit one claim for all Type 2 unit injectors in parts stock that are reworked. It is a .2-hour job to replace a unit injector return spring. ***** Affected Product ***** **** 3508 Engines **** Product Caterpillar Dealer Suggested Customer Suggested smu