105923-0731 ZEXEL 9 420 613 897 BOSCH GOVERNOR 9420613897 1059230731 1157707731

Caterpillar: Confidential Yellow
PSP FOR ADDING HOLDDOWN BRACKET AND PLATE TO FUEL INJECTION LINES ON CERTAIN CHALLENGER 65 TRACTORS - MAILED US AND CANADA, LI MITED CACO, LIMITED COFA
  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-159 A-73.1 AU-98.1 1252 PS4250 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 "PS4250" as Part Number and "7755" as Group Number. Termination Date
October 31, 1989
Problem
The No. 1, No. 2, and No. 3 fuel injection lines may crack at the injector end of the lines due to vibration from injection pulses or engine combustion. A clamping plate and a hold-down bracket can be installed to the lines to reduce vibration.
Affected Product
Model Identification Number CH65 7YC1 - 824, 828-831, 835, 836, 841, 849, 851
Parts Needed
3 - 4B4274 Washer 3 - 1W9169 Clamp 3 - 9N3388 Screw 1 - 9Y7523 Bracket 3 - 1W9167 Clamp As. 1 - 9Y7524 Plate
Action Required
Install the parts needed as shown in Illustrations 1 and 2.
Service Claim Allowances
Product Caterpillar Dealer Suggested Customer Suggested smu/age Parts Labor Hrs. Parts Labor Hrs. Parts Labor Hrs. whichever (D/N) (Cost) (C/L) (Sell) comes first 0-2000 100% 1 0 0 0 0 0-24 mo 2001-4000 33 1/3% .5 0 .5 0 0 25-36 mo This is a 1-hour job.
Parts Disposition
Not applicable ****** IMAGE: SEBE3893.00001.001 CAPTION: Illustration 1. Top View Of Installation ****** IMAGE: SEBE3893.00001.002 CAPTION: Illustration 2. Side View Of Installation