CORE ASSEM. 4N8430 - Caterpillar

Caterpillar: Confidential Yellow
PSP FOR INSTALLING A SUPPORT FOR STICK AND BOOM CIRCUIT TUBES AND FOR INSTALLING NEW HYDRAULIC SWING PIPES AND HOSES ON CER TAIN E200B AND EL200B EXCAVATORS - PS4395 - MAILED US AND CANADA, CACO, COFA, CFEL
  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.
U-67 A-39 AU-42 E-43 5057, 5459 PS4395 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 "PS4395" as Part Number, "7755" as Group Number, and "96" as Description Code. Termination Date
April 30, 1991
Problem
The stick circuit tubes, boom raise circuit tubes, and hydraulic swing pipes may vibrate and crack at the weld joints on certain E200B and EL200B Excavators.
Affected Product
Model Identification Number ***** Group 1 - Stick And Boom Circuit Tubes ***** E200B 6KF1 - 279 6KG1 - 178 EL200B 7DF1 - 634 ***** Group 2 - Hydraulic Swing Pipes ***** E200B 6KF1 - 253 6KG1 - 177 EL200B 7DF1 - 566
Parts Needed
***** Group 1 - Stick And Boom