DIAPHRAGM 9Y4811 - Caterpillar

Caterpillar: Confidential Yellow
PRIORITY - NEW CONTROL GROUPS (PERSONALITY MODULES) NEED TO BE INSTALLED ON CERTAIN 3406B AND 3406C ENGINES - PI3584 - MAILED US AND CANADA, TRUCK TEPS - REVISED 05/92
  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.
April 23, 1992 (Revised May 1992) U-62 TT-10 PRIORITY NEW CONTROL GROUPS (PERSONALITY MODULES) NEED TO BE INSTALLED ON CERTAIN 3406B AND 3406C ENGINES 1902 PI3584 This Program must be administered as soon as possible. When reporting the repair, use "PI3584" 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 "PI3584" as the Part Number, "7751" as the Group Number, "96" as the Warranty Claim Description Code, and "Z" as the SIMS Description Code. This Revised Service Letter replaces the April 23, 1992 Service Letter. Changes have been made to the Parts Needed, Action Required, and Service Claim Allowances. COMPLETION DATE Termination Date
October 31, 1992 April 30, 1993
Problem
A new control group (personality module) needs to be installed on certain 3406B and 3406C Engines.
Affected Product
Model Identification Number 3406B & 4CK1-958, 961-1001, 1005, 1007-1026, 1034-1039, 3406C 1041-1087, 1090-1107, 1109-1168, 1170-1173, 1175-1187, 1190, 1192, 1193, 1207, 1209, 1213,