{"product_id":"278681r-genuine-bendix®-tu-flo-500-compressor","title":"278681R | Genuine Bendix® Tu-Flo 500 Air Compressor","description":"\u003cp\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e: Tu-Flo 500 Air Compressor For Freightliner, Kenworth, International \/ Navistar, Mack\u003cbr\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e: Bendix®\u003cbr\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e: New\u003cbr\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e: 278681R\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eVehicle Fitment\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003cp\u003e\u003cb\u003e1. Compatible Engine Platforms\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eThe specification is commonly mounted on classic and heavy-duty diesel engines, including:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCummins®:\u003c\/b\u003e Big Cam, Small Cam, N14, N855, PT series, and L10\/M11 engines (flange or belt\/gear-driven mounting depending on housing configuration).\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eDetroit Diesel®:\u003c\/b\u003e 2-Stroke Series (6V71, 8V71, 6V92, 8V92) and early Series 60 engines.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCaterpillar®:\u003c\/b\u003e 3406A, 3406B, 3406C, and 3306 engine series.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eMack® \u0026amp; International®\/Navistar®:\u003c\/b\u003e Classic Mack E6\/E7 and International DT466 \/ MaxxForce\/Navistar V8 platforms.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e2. Compatible Vehicle Makes \u0026amp; Models\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eUsed across a wide range of Class 7 \u0026amp; 8 commercial trucks, buses, and vocational machinery:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eFreightliner:\u003c\/b\u003e FLD, Classic, Century Class.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eKenworth:\u003c\/b\u003e W900, T600, T800, K100.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003ePeterbilt:\u003c\/b\u003e 379, 359, 378, 357.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eInternational \/ Navistar:\u003c\/b\u003e 4000, 8000, 9000-series heavy trucks and Paystar models.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eMack Trucks:\u003c\/b\u003e R-Series, CH, CL, Granby series.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eBuses \u0026amp; Coaches:\u003c\/b\u003e MCI, Prevost, Gillig, and Blue Bird transit\/school buses.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003eThe \u003cb\u003e500 Air Compressor \u003c\/b\u003eis a factory-remanufactured, heavy-duty 2-cylinder reciprocating piston air compressor engineered for commercial trucks, buses, and industrial diesel applications.\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003cp\u003e\u003cb\u003e1. What is it?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003ePart is the heart of a heavy vehicle's compressed air system. Driven by the vehicle's engine (via gears or belts), it draws ambient air, compresses it, and feeds high-pressure air into the primary and secondary air reservoirs to power critical pneumatic systems.\u003c\/p\u003e\n\u003cp\u003e\u003cb\u003e2. Core Functions \u0026amp; Applications\u003c\/b\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eAir Brake System Supply:\u003c\/b\u003e Generates the continuous air pressure required to operate pneumatic service brakes, spring parking brakes, and trailer brake systems.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eAuxiliary Pneumatics:\u003c\/b\u003e Supplies compressed air for air suspension systems, air horns, cab air seats, and automated transmission shifters.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eCooling \u0026amp; Lubrication Integration:\u003c\/b\u003e Utilizes an engine coolant-cooled cylinder head to prevent oil carbonization and is lubricated directly by the engine's oil system.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSigns of Faulty\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003cp\u003e\u003cb\u003e1. Excessive Oil Carryover into Air Tanks\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eWorn piston rings or scored cylinder walls allow engine oil to bypass the compressor pistons into the air system:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSymptom:\u003c\/b\u003e Liquid oil or sludge discharging from the air dryer purge valve or draining out of the primary air tanks.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eConsequence:\u003c\/b\u003e Contaminates brake valves, degrades rubber diaphragms in brake chambers, and clogs the air dryer desiccant cartridge.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e2. Slow Air Pressure Build-Up (Low CFM Delivery)\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eAs internal valves or piston rings wear, the compressor loses efficiency and struggles to pump air:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSymptom:\u003c\/b\u003e Taking significantly longer than standard time (typically \u0026gt;3–5 minutes) to build pressure from 85 PSI to 100+ PSI at high idle.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eConsequence:\u003c\/b\u003e Triggers low-air warning buzzers and dashboard lights; delays vehicle departure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e3. Excessive Noise \u0026amp; Knocking\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eWorn connecting rod bearings, wrist pins, or excessive crankshaft end-play create mechanical knocking noises:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSymptom:\u003c\/b\u003e Loud clattering or rhythmic metallic knocking coming from the front\/side of the engine where the compressor is mounted.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e4. Coolant Leaks \/ Overheating Air System\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eA blown head gasket or cracked cylinder head on the Tu-Flo 500 can cross-contaminate cooling and air passages:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSymptom:\u003c\/b\u003e Coolant disappearing with no external leaks, white milky residue in air tanks, or air bubbling into the radiator\/expansion tank.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eConsequence:\u003c\/b\u003e Engine overheating or severe carbon build-up in the discharge line due to extreme compressed air temperatures.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003e5. Air Leaks \u0026amp; Failure to Unload\u003c\/b\u003e\u003c\/p\u003e\n\u003cp\u003eIf the internal unloader valve mechanism sticks or fails:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cb\u003eSymptom:\u003c\/b\u003e The compressor continuously pumps air past the governor setpoint (causing air safety pop-off valves to trigger) OR fails to pump air at all because the unloader remains stuck open.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eManufacturer information\u003c\/strong\u003e\u003cbr\u003eA part of the Knorr-Bremse Group, \u003cstrong\u003eBendix®\u003c\/strong\u003e provides the automotive and truck parts industry with cutting-edge energy management solutions, active safety technologies, and air brake charging for tractors, buses, commercial vehicles, trailers, as well as medium- and heavy-duty trucks throughout North America. Headquartered in Elyria, Ohio, Bendix Commercial Vehicle Systems employs over 3,200 people who work hand in hand for the accomplishment of the brand's vision: \"to become the leading worldwide supplier of active vehicle safety systems within the commercial vehicle industry.\" This brand takes pride in being the first to introduce many notable parts and technologies to the North American commercial vehicle market. Among these many firsts are the groundbreaking air brake system technologies such as air dryers, air compressors, and ABS. At Bendix, exceeding industry standards is a strict requirement.\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003cbr\u003eFirst Truck Parts offers a \u003cstrong\u003e365-days warranty\u003c\/strong\u003e for all types of parts and in any condition. The warranty applies only to buyers who have placed an order on our website.\u003cbr\u003e\u003c\/p\u003e","brand":"Bendix®","offers":[{"title":"Default Title","offer_id":49056792314100,"sku":"278681R","price":1125.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0605\/1479\/5764\/files\/d8e0f7ecf6.jpg?v=1785542532","url":"https:\/\/firsttruckparts.com\/products\/278681r-genuine-bendix%c2%ae-tu-flo-500-compressor","provider":"First Truck Parts","version":"1.0","type":"link"}