HOUSING-WATER REGULATOR 2275942 - Caterpillar

Caterpillar: Confidential Yellow
PARTS STOCK ACTION NEEDED - PSP TO REPLACE CARRIER PLANET AND WASHERS ON CERTAIN 320, 325 EXCAVATOR SWING DRIVES - COSA LET TER NO. 3 - MAILED COSA
  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.
February 26, 1993 COSA LETTER No. 3 ***************** PRODUCT SUPPORT PROGRAM TO REPLACE CARRIER * Parts Stock * PLANET AND WASHERS ON CERTAIN 320/325 * Action Needed * EXCAVATOR SWING DRIVES ***************** 5459 PS4952 This Program can be administered either before or after a failure or complaint. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS4952" as the Part Number, and "7755" as the Group Number. If administered before failure, use "56", and after failure "96" as the Warranty Claim Description Code. Termination Date
February 28, 1994
Problem
Certain 320 and 325 Excavators may experience internal swing drive wear. This will first show up in high iron content. When S.O.S. analysis shows an iron PPM level higher than 1000, the second stage carrier planet and thrust-washers may need to be replaced. HEBE1412
Affected Product
Model Identification Number 320 4ZJ1 - 457 320L 3XK1 - 809, 812 - 833 320N 9WG1 - 705, 708 - 710, 712, 714 - 716, 718 - 739 325 9SG1 - 255 9ZK1 - 066 325L 7LJ1 - 327 2SL1 - 099, 101 - 104 325LN 2SK1 - 450 3LL1 - 104, 106 - 120, 122 - 125, 127 - 147
Parts Needed
*** Model 320 *** 1 - 7Y1774 Carrier Planet 6 - 094-1528 Washer *** Model 325 *** 1 - 7Y0596 Carrier Planet 8 - 094-1528 Washer
Action