2012/04/30 Caterpillar

Articulated Truck:

725 (S/N: B1L1-UP)

730 (S/N: B1M1-UP)

730 EJECTOR (S/N: B1W1-UP)

735 (S/N: B1N1-UP)

735B (S/N: T4P1-UP)

740 (S/N: WWD1-UP; B1P1-UP)

740 EJECTOR (S/N: B1R1-UP)

740B (S/N: T4R1-UP)

Cold Planer:

PM-200 (S/N: P1C1-UP)

PM-201 (S/N: PNM1-UP)

PM200 (S/N: P1M1-UP)

Landfill Compactor:

826H (S/N: AWF1-UP)

836H (S/N: BXD1-UP)

Soil Compactor:

825H (S/N: AZW1-UP)

Excavator:

323D (S/N: CWG1-UP)

345C (S/N: SCN1-UP; M2R1-UP; D3S1-UP)

345D (S/N: DPA1-UP; BYC1-UP; HLC1-UP; RGD1-UP; RAE1-UP; YEE1-UP; NEG1-UP; RGG1-UP; EEH1-UP; KFH1-UP; RAJ1-UP; MLK1-UP; FES1-UP; PBT1-UP; BYW1-UP; LKY1-UP)

365C (S/N: ELC1-UP; FEN1-UP; MCS1-UP; MCY1-UP)

374D (S/N: PAP1-UP; PAS1-UP; PAX1-UP)

385C (S/N: EDA1-UP; MMA1-UP; KGB1-UP; SBE1-UP; KKK1-UP; EAM1-UP; WAW1-UP; MNZ1-UP)

390D (S/N: WAG1-UP; WAP1-UP)

Load Haul Dump:

R1700G (S/N: SBR1-UP)

R2900G (S/N: JLK1-UP)

Motor Grader:

14M (S/N: B9J1-UP)

16M (S/N: B9H1-UP)

24M (S/N: B9K1-UP)

Mobile Hydraulic Power Unit:

345C MHPU (S/N: L5B1-UP; M3F1-UP; B6N1-UP)

345D MHPU (S/N: P5D1-UP)

365C MHPU (S/N: GSZ1-UP)

385C MHPU (S/N: MSF1-UP; M3P1-UP)

Off-Highway Truck/Tractor:

770 (S/N: BZZ1-UP)

772 (S/N: RLB1-UP)

773F (S/N: EED1-UP)

777F (S/N: JRP1-UP)

Quarry Truck:

775F (S/N: DLS1-UP)

Pipelayer:

583T (S/N: CMX1-UP)

587T (S/N: FAT1-UP)

Power Module:

C32 POWER MODUL (S/N: MED1-UP; KNM1-UP)

Reclaimer Mixer:

RM-300 (S/N: BWR1-UP)

Road Reclaimer/Soil Stabilizer:

RM-500 (S/N: ASW1-UP)

Track-Type Tractor:

D10T (S/N: RJG1-UP)

D11T (S/N: GEB1-UP; TPB1-UP)

D8T (S/N: J8B1-UP; KPZ1-UP)

D9T (S/N: RJS1-UP)

Underground Articulated Truck:

AD30 (S/N: DXR1-UP)

AD45B (S/N: CXM1-UP)

AD55 (S/N: DNW1-UP)

AD55B (S/N: JNW1-UP)

Wheel Dozer:

824H (S/N: ASX1-UP)

834H (S/N: BTX1-UP)

844H (S/N: BTW1-UP)

854K (S/N: 2211-UP)

Wheel Loader:

966H (S/N: A6D1-UP; RYF1-UP; A6G1-UP; A6J1-UP; TAL1-UP)

972H (S/N: A7D1-UP; A7G1-UP; A7J1-UP)

980H (S/N: MHG1-UP; A8J1-UP; JMS1-UP)

988H (S/N: BXY1-UP)

990H (S/N: BWX1-UP)

992K (S/N: H4C1-UP)

993K (S/N: Z9K1-UP)

Wheel Tractor-Scraper:

621G (S/N: DBB1-UP; DXB1-UP)

623G (S/N: DBC1-UP)

627G (S/N: DBD1-UP)

631G (S/N: DFA1-UP; DXE1-UP)

637G (S/N: DFJ1-UP)

657G (S/N: W1B1-UP; W1C1-UP)

The improved 230-3728 O-Ring Seal and 230-3775 O-Ring Seal provide better sealing capability due to an improved manufacturing process. These O-Ring seals are adaptable back to first production on the serial numbers listed above.

This process improvement is effective for all engine serial numbers built on or after 3January 2011.