CYLINDER GP 6C9407 - Caterpillar

Loader415F2 (S/N: HWA161-531)415F2 IL (S/N: PF4153-674)416F2 (S/N: HWB151-1275)420F2 (S/N: NMB90121-90125)420F2 IT (S/N: HWD1-2115)420F2 ST (S/N: HWC1-2715)427F2 (S/N: HWK1-341)428F2 (S/N: HWN1-773)430F2 IT (S/N: HWG1-504)430F2 ST (S/N: HWE1-696)432F2 (S/N: HWP1-1372)434F2 (S/N: HWR1-245)444F2 (S/N: HWS1-452)Description Of Change: The current software in the monitoring system, which controls the air conditioning compressor, reacts too slowly to the opening of the low-pressure switch. In certain situations this can cause the compressor to cycle on and off rapidly. The relay in the fuse panel can be heard rapidly clicking if this occurs. The air conditioning system will also operate at reduced performance if this state occurs.New software is now used for the sales models listed above. The new software prevents the rapid cycling of the air conditioning compressor.Adaptable To: The new software is adaptable to the machines within the listed serial numbers, and is effective with all machines after the listed serial numbers.The software is available in the form of a flash file through the Caterpillar Service Information System (SIS). A newer part number may be available. SIS web only displays the latest available flash file.