Komatsu Engine Washer 6150-61-2815 for 6D125 WA450 PC400 Product Overview This heavy-duty 6150-61-2815 engine washer is a premium aftermarket replacement spare part designed specifically for Komatsu 125 series powertrain systems. It provides crucial surface load distribution and precise fluid sealing parameters at critical junction points. Featuring strict dimensional metrics, it prevents clamping force relaxation and counters rapid pressure drops during high-torque open-pit excavation and continuous heavy hauling operations. Core Technical Performance & Load Bearing Advantages Engineered for high-stress mining environments, this resilient sealing washer features advanced engineering characteristics: High Thermal Stability: Maintains structural tensile strength and prevents compression set when subjected to prolonged high temperature environments. Corrosion Resistance: Resistant to heavy chemical degradation from modern industrial cooling additives, engine oils, and sulfur-rich combustion byproducts. Load Distribution Matrix: Maximizes face contact to evenly scatter high axial tension, preventing surface galling on mating cast-iron engine components. Compatible Machine & Serial Number Matrix This vital structural washer seamlessly integrates across an extensive range of Komatsu heavy infrastructure machinery utilizing the 125 engine family: Equipment Type Compatible Machine Models Engine Build Configurations Heavy Excavators PC400-6, PC400LC-6, PC450-6, PC450LC-6 S6D125E-2, SA6D125E-2 Wheel Loaders WA450-3, WA470-3, WA480-5 SAA6D125E-3, SAA6D125E-5 Crawler Bulldozers D65E-12, D65P-12, D85ESS-2A 6D125-1, S6D125-1 Rigid Dump Trucks HD325-6, HD325-7, HD405-7 SAA6D125E-3, SAA6D125E-5A/B/C OEM Matching Cross Reference & Pairing Parts List Ensure robust configuration integrity during complete system overhauls by cross-referencing precise matching components: Component Description OEM Part Number Interchange / Pairing Reference Engine Sealing Washer 6150-61-2815 6150612815 Drive Sealing Element Water Pump Assembly 6151-61-1102 6151611102 Cooling Component Thermostat Unit 6150-61-2112 6150612112 Temperature Regulator O-Ring Seal 07000-62085 0700062085 Fluid Joint Ring Common Axle Hub Failure & Component Replacement Guidance When operating continuously under severe open-pit mining heavy loads or -40℃ extreme arctic cold, critical engine gaskets and washers experience rapid cycling wear: Clamping Relaxation: Severe vibration can lead to bolt backing or washer deformation, precipitating dynamic oil or coolant weeping along the assembly flange. Abrasive Erosion: Desert operations filled with fine particulate matter can introduce micro-abrasives if seals degrade, creating surface scoring on copper interfaces. Installation Caution: Washers are single-use tension items. Never reuse a crushed 6150-61-2815 ring during rebuilds, as seating memory loss will compromise fluid boundary integrity under heavy load parameters. Manufacturing & Precision QC Standard Every aftermarket replacement spare part complies with standardized earthmoving powertrain metrics to safeguard high runtime parameters: Thickness Uniformity: Parallel faces are precision ground to within micron ranges to prevent uneven loading and stud bending stresses. Edge Deburring: Microscopic tumbling protocols eliminate perimeter flash lines, preventing stress concentration points and seating misalignments. Material Hardness: Heat-treated to specific Rockwell hardness ranges to ensure optimal deformation elasticity without breaking under high torque limits. Frequently Asked Questions Q: Can the 6150-61-2815 washer be safely annealed and re-used in an emergency? A: No. This aftermarket replacement spare part is manufactured to custom tension ratings to provide structural clamping resilience. Re-annealing alters the material matrix, raising the risk of fluid bypass under load. Q: What causes premature wear or blowout of this washer component? A: Over-torquing structural studs beyond factory specifications or thermal cycling shocks caused by cooling system failure are the main causes of washer distortion. Q: Is this washer compatible with the fuel delivery lines on the 125 engine? A: The 6150-61-2815 is designed primarily for the cooling and lubricating path auxiliary groups. Check your parts manual to verify if it shares dimensions with your specific fuel line banjo fittings. Related Axle & Drivetrain Spare Parts 6151-61-1102 Heavy Equipment Water Pump Group 6150-61-2112 High Flow Engine Thermostat 07000-62085 Nitrile Flange Junction O-Ring 6151-21-4110 Complete Overhaul Gasket Component Kit Komatsu Engine Washer 6150-61-2815 for 6D125 WA450 PC400 No. Part Number Part Name 1* X16-0350440 OIL COOLER UNIT 1 6152-62-2210 ELEMENT 2 6150-61-2125 COVER 2 6150-61-2124 COVER 2 6150-61-2123 COVER (6150-61-2124,6150-61-2520(4)) 3 6150-61-2510 O-RING(K2) 4 6150-61-2520 O-RING(K2) 4 6150-61-2562 GASKET(K2) 5 6150-61-2580 NUT 5 01582-11008 NUT 6 01602-21030 WASHER,SPRING 7 01640-21016 WASHER 8 6150-61-2530 PLUG 9 6151-62-2130 COVER 10 07000-63042 O-RING(K2) 11 6212-65-2610 THERMOSTAT 12 6150-61-2540 SEAL(K2) 13 6150-61-2141 CASE 14 6150-61-2151 PLATE 15 01435-00825 BOLT 16 6150-61-2550 O-RING(K2) 17 6151-62-2180 STRAINER 18 6150-61-2815 GASKET(K2) 18 6150-61-2813 GASKET(K2) 19 01010-81025 BOLT 19 01010-51025 BOLT 20 01010-81065 BOLT 21 01010-81080 BOLT 22 01640-21016 WASHER 22 01640-21016 WASHER Related Part Numbers NO P.N. 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