VALVE GP-PUMP CONTROL 2643144 - Caterpillar

Caterpillar: Confidential Yellow
PRIORITY - NEW PARTS NEED TO BE INSTALLED IN REAR CAM DRIVE GEAR GROUP ON CERTAIN 3516 LOW SPEED INDUSTRIAL AND MARINE ENG INES - PI3539 - MAILED US AND CANADA, CACO, CFEL, COSA - REVISED 11/91
  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 28, 1991 (Revised November 1991) U-163 A-125 E-111 O-126 PRIORITY NEW PARTS NEED TO BE INSTALLED IN REAR CAM DRIVE GEAR GROUP ON CERTAIN 3516 LOW SPEED INDUSTRIAL AND MARINE ENGINES 1206 PI3539 This Revised Service Letter replaces the August 28, 1991 (Revised October 1991) Service Letter. Changes have been made to the Affected Product. COMPLETION DATE Termination Date
February 29, 1992 August 31, 1992
Problem
New parts need to be installed in rear cam drive gear group on certain 3516 Low Speed Industrial and Marine Engines. The new parts will increase the service life of the rear cam drive gear group.
Affected Product
Model Identification Number ***** Group 1 ***** 3516 71Z242, 243, 253-256, 258-262, 274-282, 285-287, 289, 290, 292- 296 72Z339-354,