HOUSING A. 1F6126 - Caterpillar

(2YN444, 3ZN487, 4MN430, 5LN640, 6JN418, 7KN427, 8LN431, 9PN538, ) D7R (9HM541, 2EN416, 3DN236, 2HR671),
D8R (7XM1669),
D9R (7TL814, 8BL1021),
D10R (3KR766) Track-Type Tractors;
589 (31Z486) PipelayersReference: Special Instruction; February, 1997; "Assembly Procedure For Advanced Modular Cooling (Radiator) System (AMOCS) in Tractors."Description of Change: A seal and spacer made of a different material are used in the above machines powered by 3306, 3406, 3408, and 3508 Engines. The new seal and spacer are made of Nitrile rubber, and are a reddish brown in color. The new seal and spacer are better suited for an oil and coolant environment. Both the new and the former seal and spacer have comparable abrasion resistance. The former seal and spacer are made of EPDM Rubber, and are black in color.Adaptable To: The new 144-0520 Seal, and 144-8461 Spacer are effective with the above machines, but are not available for parts service. The 144-0520 Seal and the 144-8461 Spacer are serviced by the 6I-2431 Seal and the 6I-2435 Spacer.