SEAL AS-BUFFER 1672214 - Caterpillar

Asphalt Paver: AP-1000D (S/N: EAD1-UP) AP-1055D (S/N: FAC1-UP; A6P1-UP) AP-755 (S/N: B3T1-UP) BG-2455D (S/N: BNW1-UP) BG-260D (S/N: BPW1-UP)Cold Planer: PM-102 (S/N: Z2X1-UP)Landfill Compactor: 816F Series 2 (S/N: BZR1-UP)Soil Compactor: 815F Series 2 (S/N: BYN1-UP)Engine: C7 (S/N: JTF1-UP; RMF1-UP; FML1-UP; FMM1-UP; JRT1-UP; WAX1-UP; PRY1-UP) C9 (S/N: LFE1-UP; 9DG1-UP; CKP1-UP; LFR1-UP; X3R1-UP; C9Y1-UP)Generator Set: C18 GEN SET (S/N: STM1-UP) C9 GEN SET (S/N: C9E1-UP) C9 MARINE GEN (S/N: SJB1-UP) C9 MARINE GS (S/N: C9A1-UP)Industrial Engine: C9 INDUSTRIAL (S/N: JSC1-UP; JLW1-UP)Marine Engine: C7 MARINE (S/N: M7A1-UP) C9 MARINE (S/N: CSN1-UP; X9Y1-UP)Truck Engines: C7 TRUCK ENGINE (S/N: LBM1-UP)Excavator: 324D (S/N: LAB1-UP; EJC1-UP; MND1-UP; T2D1-UP; BYE1-UP; JJG1-UP; ECH1-UP; TRH1-UP; BTK1-UP; AWN1-UP; TSN1-UP; DFP1-UP; JKR1-UP; JZR1-UP; JLS1-UP; JAT1-UP; PYT1-UP; CJX1-UP) 325D (S/N: GPB1-UP; NAC1-UP; KBE1-UP; PKE1-UP; KDG1-UP; C4H1-UP; DBH1-UP; ERK1-UP; RJK1-UP; C8L1-UP; LAL1-UP; MCL1-UP; DAP1-UP; A3R1-UP; GBR1-UP; SCR1-UP) 328D (S/N: BYH1-UP; GTN1-UP; MKR1-UP) 329D (S/N: MNB1-UP; XDB1-UP; BFC1-UP; BBF1-UP; CZF1-UP; DJF1-UP; JHJ1-UP; RSK1-UP; WDK1-UP; EBM1-UP; TPM1-UP; BYS1-UP; WLT1-UP; LFW1-UP; YFW1-UP; SCY1-UP; TAY1-UP; DTZ1-UP) 330D (S/N: PFC1-UP; NBD1-UP; R2D1-UP; GGE1-UP; NEF1-UP; B6H1-UP; EAH1-UP; LCJ1-UP; THJ1-UP; C5K1-UP; E4K1-UP; FFK1-UP; H3K1-UP; L2K1-UP; RDK1-UP; PEL1-UP; JJM1-UP; LEM1-UP; LRM1-UP; ERN1-UP; JLP1-UP; MWP1-UP; RAS1-UP; MEY1-UP) 336D (S/N: SKE1-UP; JBF1-UP; J2F1-UP; PRF1-UP; LMG1-UP; MYG1-UP; KDJ1-UP; WRK1-UP; W3K1-UP; MPL1-UP; PPN1-UP; MYP1-UP; M2P1-UP; JER1-UP; DTS1-UP; NLS1-UP; JBT1-UP; KKT1-UP; M4T1-UP; WET1-UP; PGW1-UP; L5X1-UP) M325D (S/N: EDF1-UP; KGG1-UP; KAY1-UP)Forwarder: 584 (S/N: PAK1-UP) 584HD (S/N: PBK1-UP)Track Feller Buncher: 2390 (S/N: P3H1-UP) 2491 (S/N: P5J1-UP) 511 (S/N: 5111-UP) 521 (S/N: 5211-UP) 522 (S/N: 5221-UP) 532 (S/N: 5321-UP) 552 (S/N: 5521-UP)Integrated Toolcarrier: IT62H (S/N: M5G1-UP)Motor Grader: 120K (S/N: SZN1-UP; JAP1-UP) 120M Series II (S/N: M9H1-UP) 12K (S/N: JJA1-UP; SZP1-UP) 140K (S/N: JPA1-UP; SZL1-UP) 140M Series II (S/N: M9D1-UP; M9J1-UP) 140M (S/N: B9D1-UP; B9G1-UP; D9G1-UP; B9M1-UP) 160K (S/N: SZM1-UP; JBP1-UP) 160M Series II (S/N: M9E1-UP; M9K1-UP) 160M (S/N: B9E1-UP; B9L1-UP; B9T1-UP; D9T1-UP)Mobile Hydraulic Power Unit: 323D MHPU (S/N: DCY1-UP) 324D MHPU (S/N: KJR1-UP) 325D MHPU (S/N: SRC1-UP; C3N1-UP; H3N1-UP; X3N1-UP) 329D MHPU (S/N: J9D1-UP; L5H1-UP) 330D MHPU (S/N: D3D1-UP; H3D1-UP; M3D1-UP; GMN1-UP) 336D MHPU (S/N: J6D1-UP; M3N1-UP)Petroleum Engine: C7 PETROLEUM (S/N: K2A1-UP; C7P1-UP) C9 PETROLEUM (S/N: P9L1-UP; KLW1-UP)Petroleum Power Train Package: TH31-C9I (S/N: PAZ1-UP)Track-Type Loader: 973C (S/N: LDX1-UP) 973D (S/N: LCP1-UP)Track-Type Tractor: D6R Series III (S/N: JEK1-UP; EXL1-UP; LGP1-UP; EXW1-UP) D6T (S/N: JHB1-UP; ZEB1-UP; SMC1-UP; LBD1-UP; LAE1-UP; DJG1-UP; WCG1-UP; WFH1-UP; LKJ1-UP; SNK1-UP; KJL1-UP; SKL1-UP; GCT1-UP; RLW1-UP; LAY1-UP; PEZ1-UP)Wheel Dozer: 814F Series 2 (S/N: BXG1-UP)Wheel Loader: 950H (S/N: N1A1-UP; M1G1-UP; J5J1-UP; K5K1-UP) 962H (S/N: N4A1-UP; M3G1-UP; J6J1-UP; K6K1-UP; MAL1-UP)Wheel Skidder: 525C (S/N: 5251-UP) 535C (S/N: 5351-UP) 545C (S/N: 5451-UP)Wheel Tractor-Scraper: 627G (S/N: DBD1-UP) 637G (S/N: DFJ1-UP)Introduction
This Special Instruction is intended to give information for troubleshooting C7 and C9 HEUI engine fuel systems. Read all of the instruction before performing any of the procedures listed in this instruction.Low Pressure Fuel System Requirements
Increasing fuel supply pressure and effectively removing water and abrasive particles has demonstrated injector durability increases from 200 percent to as high as 1,000 percent in severe applications. More aggressive filtration and monitoring is required to maximize fuel injector life and meet increasing reliability and durability expectations. Conversely, reliability and