LINES GP-HYDRAULIC 2406804 - Caterpillar

Caterpillar: Confidential Yellow
SERVICE LETTER SUPPLEMENT FOR FEBRUARY 24, 1991 SL - PRIORITY - PARTS STOCK ACTION NEEDED - NEW VALVE LOCKS NEED TO BE INS TALLED ON CERTAIN D4E, D5B, D6D, D6E, D8L TRACTORS; 930R, 966R WHEEL LOADERS; 120G, 140G MOTOR GRADERS; 621S SCRAPERS; 3306, 3408 ENGINES - PI3515 - MAILED BRAZIL
  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.
August 13, 1991 B-28 SERVICE LETTER SUPPLEMENT Some information needs to be changed in the Service Letter which follows: February 24, 1991 (Revised May 1991) - PI3515; New Valve Locks Need To Be Installed On Certain D4E, D5B, D6D, D6E, And D8L Tractors; 930R And 966R Wheel Loaders; 120G And 140G Motor Graders; 621S Scrapers; And 3304, 3306 And 3408 Engines Under the heading Affected Product, for 140G Motor Graders, change the identification numbers to those that follow: 140G 5MD734-818, 820-948, 950-1009, 1011-1016