ROLLER GP-TRACK-DOUBLE FLANGE 9W5585 - Caterpillar

All 3406 EnginesSUPPLEMENT: 10/00/84ENGINE NEWS, FEBRUARY 22, 1984, PAGE 4.Put a mark through the article "New Cylinder Head Assembly Made With A Different Material". The article made reference to a new material (compacted graphite iron) used in 3406 Direct Injection Engines. The compacted graphite iron cylinder heads should not be used in precombustion chamber engines. A new high alloy material is used in all cylinder heads (direct injection and precombustion) used in 3400 Series Engines.
--------------- END SUPPLEMENT ---------------Description of Change: A new head assembly is now used in the cylinder head groups on 3406 Engines. The new head assembly is made from a different material. The new material makes a stronger casting that has more resistance to cracks.Adaptable As: The new 1W1509 Cylinder Head Assembly is a direct replacement for the former 7N1303 Cylinder Head Assembly. The former 7N1303 Head Assembly is canceled. The new cylinder head is in effect as shown in the chart.