TURBOCHARGER GP 1236478 - Caterpillar

Caterpillar: Confidential Yellow
PRIORITY - REINFORCING PLATES NEED TO BE INSTALLED ON THE DRAFT TUBES OF CERTAIN 631E AND 637E SCRAPERS - PI3525 - MAI LED US AND CANADA, CACO, COFA, BRAZIL, CFEL, 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.
U-45 A-36 AU-30 B-9 E-34 O-39 PRIORITY 6206 PI3525 COMPLETION DATE Termination Date
September 30, 1991 March 31, 1992
Problem
Cracks may develop in the reinforcing ring of the draft tube on certain 631E and 637E Scrapers. Reinforcing plates need to be installed on these draft tubes of these scrapers.
Affected Product
Model Identification Number 631E 1AB735-1287, 1289-1311, 1314-1322, 1325, 1326, 1328, 1332-1351, 1353, 1354, 1359 1NB565-720, 723-729, 735, 738, 743-748, 750, 754 3ND245-304, 306, 309-312, 314, 315, 317, 318 637E 1FB352-387, 389-393, 395-398, 400-405, 407-410, 412-424, 426, 428-432, 434-447, 455, 464-466, 470-477, 480, 483-489, 492, 498-508 1JB557-724
Parts Needed
Dealers will need to order parts for this Program. 2 - 3G7146 Reinforcement
Action Required
See the attached procedure to install the reinforcement plates on 631E and 637E Scrapers.
Owner Notification
Not Applicable
Service Claim Allowances
Caterpillar Dealer Suggested Customer Suggested Parts Labor Hrs.