PUMP GP-WATER 3520209 - Caterpillar

Caterpillar: Confidential Yellow
PSP FOR INSTALLING A HIGHER CAPACITY AIR CLEANER GROUP ON CERTAIN HIGH PERFORMANCE 3412 MARINE ENGINES - PS4653 - MAILED US AND CANADA, CACO, CFEL, COSA, MARINE TEPS, 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.
May 3, 1991 U-88 A-63 AU-50.2 E-55 O-65 TM-8 PRODUCT SUPPORT PROGRAM FOR INSTALLING A HIGHER CAPACITY AIR CLEANER GROUP ON CERTAIN HIGH PERFORMANCE 3412 MARINE ENGINES 1051 PS4653 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 "PS4653" as Part Number, "7755" as Group Number, and "96" as Description Code. Termination Date
May 31, 1992
Problem
The existing panel type air cleaner on certain high performance 3412 Marine Engines may not have sufficient air flow capacity for operation under full load if the inlet restriction is at or near the maximum allowable restriction of 30 inches of water.
Affected Product
Model Identification Number 3412* 60M2477, 2574, 2575, 2577, 2580, 2663, 2669, 2767, 2820, 2826, 2856, 2857, 2860, 2864, 2866, 2963, 2965, 2988, 2992, 3001,