INSULATION 9D1803 - Caterpillar

(S/N: P721-124; P731-127)Track-Type TractorD6T (S/N: CR31-120; 2B31-UP; MH71-327; CG81-105; SGA1-103; KSB1-2018; ZJB1-1715; JZC1-309; DTD1-1309; RAD1-1009; STE1-118; EJJ1-316; SLJ1-1291; GMK1-1667; RRK1-307; JML1-251; MEL1-205; TSM1-418; WLM1-307; WRN1-574; K1R1-UP; KMR1-606; PLR1-721; WES1-400; SGT1-434; JRW1-721; RCW1-1605; NDY1-202; TMY1-368; HTZ1-672)Description Of Change: An improved AC condenser compressor is now being used on certain D6T and Pipelayer Track-Type Tractors. The improved compressor is a heavy-duty compressor improving performance and durability.Adaptable To: Replace the existing 324-9711 Refrigerant Compressor Gp with the heavy duty 507-3868 Clutch and Compressor GP.The following changes are adaptable to the products within the listed serial numbers, and are effective with all products after the listed serial numbers.