HOSE AS 4490242 - Caterpillar

(S/N: GAC1-2845; PZL1-996; WEY1-841)313F (S/N: DJE1-10115; PRG1-10126)314E (S/N: DKD1-877; ZJT1-1768)316E (S/N: DZW1-2432; YZZ1-526)316F (S/N: YDL1-10156; ECZ1-10033)318E (S/N: DZF1-377; WZS1-336)318F (S/N: FFT1-193)320E (S/N: SXE1-4118; TNJ1-474; LAK1-366; WBK1-3932; LHN1-1102; TFX1-1646; NAZ1-2496)323E (S/N: RAP1-1123; YRP1-318; TDW1-637)323F (S/N: P391-90143; PLB1-10060; YEC1-10051; XCF1-10401; YEJ1-10269; NCW1-10127; KBY1-251)324E (S/N: PNW1-1640)326F (S/N: HCJ1-10052; XFK1-10046; WGL1-10227)329E (S/N: RLD1-780; ZCD1-838; TST1-879)330F (S/N: WBA1-10006; LBN1-394; JFR1-10074; HBT1-10103; MBX1-10471)336E (S/N: RZA1-1060; YEP1-549; CMR1-344; BZY1-2670)336F (S/N: TZA1-10092; RKB1-10508; RBC1-332; YBH1-10015; NAJ1-10015; PFL1-10010; SSN1-10060; LTP1-10025; KCS1-10074; NBS1-401; MTW1-178; DFY1-10017)349D2 (S/N: XAC1-162)349E (S/N: ETC1-164)349F (S/N: BZ21-10215; KEA1-181; HPD1-10163)352F (S/N: YEG1-258; KBP1-304)374F (S/N: NFJ1-10077; DNM1-459)390F (S/N: MGF1-312; FEH1-10035)OEM Excavator Based Specialty Solution374F OEM (S/N: P4L1-90206)Reference: Special Instruction , M0079336 , "GRADE System Calibration and Measure-Up Procedure for the 2D and 3D on Excavators"Description Of Change: Updated instructions for GRADE system calibration and measure-up procedure are now used on the machines listed above. Improvements have been made to factory calibration processes which will limit the need to re-calibrate grade assist and payload functions.Adaptable To: The following changes are adaptable to the products within the listed serial numbers, and are effective with all products after the listed serial numbers.Before replacing the sensor, attempt the Special Instruction , M0079336 , "GRADE System Calibration and Measure-Up Procedure for the 2D and 3D on Excavators" , Boom Sensor Calibration and Stick Sensor Calibration.The Special Instruction is available through the normal literature distribution system. The publication can also be found on the Caterpillar Service Information System (SIS).