{"product_id":"s4784079282-genuine-wabco®-hydraulic-pump-motor-kit","title":"S4784079282 | Genuine Wabco® Hydraulic Pump Motor Kit","description":"\u003cp\u003e\u003cstrong\u003eDescription\u003c\/strong\u003e:\u003cbr\u003eA Hydraulic Pump Motor \u003cstrong\u003eS4784079282 \u003c\/strong\u003eis the component that creates and moves hydraulic pressure in a system. In simple terms, it’s the part that powers the fluid flow so hydraulic systems can do work. Hydraulic Pump Motor Kit For \u003cspan\u003eFreightliner, Kenworth, Mack, Peterbilt, Volvo\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003ePart Number\u003cspan\u003e:\u003c\/span\u003e\u003c\/strong\u003e S478 407 928 2, S4784079282\u003cbr\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003cspan\u003e: New\u003c\/span\u003e\u003cbr\u003e\u003cstrong\u003eManufacture\/Brand\u003c\/strong\u003e\u003cspan\u003e: Wabco\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cspan\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cstrong\u003eFits\u003cspan\u003e S4784079282 \u003c\/span\u003eFor\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp data-end=\"506\" data-start=\"490\"\u003e\u003cspan\u003eFreightliner, Kenworth, Mack, Peterbilt, Volvo\u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong data-end=\"597\" data-start=\"585\"\u003ePurpose of using S4784079282:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp data-end=\"443\" data-start=\"420\" data-section-id=\"16j0ow4\"\u003e\u003cstrong\u003e1. Provide power\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"525\" data-start=\"444\"\u003e\n\u003cli data-end=\"494\" data-start=\"444\" data-section-id=\"1e8mtmz\"\u003e\n\u003cp data-end=\"494\" data-start=\"446\"\u003eThe motor (electric or engine-driven) turns on\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"525\" data-start=\"495\" data-section-id=\"1xbpjpi\"\u003e\n\u003cp data-end=\"525\" data-start=\"497\"\u003eSupplies rotational energy\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"556\" data-start=\"532\" data-section-id=\"kw0dse\"\u003e\u003cstrong\u003e2. Drive the pump\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"637\" data-start=\"557\"\u003e\n\u003cli data-end=\"595\" data-start=\"557\" data-section-id=\"9txrqx\"\u003e\n\u003cp data-end=\"595\" data-start=\"559\"\u003eThe motor spins the hydraulic pump\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"637\" data-start=\"596\" data-section-id=\"1rxuuq4\"\u003e\n\u003cp data-end=\"637\" data-start=\"598\"\u003eThis is what actually moves the fluid\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"674\" data-start=\"644\" data-section-id=\"6lwlhz\"\u003e\u003cstrong\u003e3. Move hydraulic fluid\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"746\" data-start=\"675\"\u003e\n\u003cli data-end=\"711\" data-start=\"675\" data-section-id=\"1pmuuqq\"\u003e\n\u003cp data-end=\"711\" data-start=\"677\"\u003eFluid is pulled from a reservoir\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"746\" data-start=\"712\" data-section-id=\"1if4zc7\"\u003e\n\u003cp data-end=\"746\" data-start=\"714\"\u003eThen pushed through the system\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"778\" data-start=\"753\" data-section-id=\"yrsk94\"\u003e\u003cstrong\u003e4. Create pressure\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"874\" data-start=\"779\"\u003e\n\u003cli data-end=\"822\" data-start=\"779\" data-section-id=\"y0dvp4\"\u003e\n\u003cp data-end=\"822\" data-start=\"781\"\u003eThe pump forces fluid into tight spaces\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"874\" data-start=\"823\" data-section-id=\"g38n7e\"\u003e\n\u003cp data-end=\"874\" data-start=\"825\"\u003eThis builds \u003cstrong data-end=\"854\" data-start=\"837\"\u003ehigh pressure\u003c\/strong\u003e needed to do work\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"914\" data-start=\"881\" data-section-id=\"bfmlto\"\u003e\u003cstrong\u003e5. Perform mechanical work\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-end=\"940\" data-start=\"915\"\u003eThat pressure is used to:\u003c\/p\u003e\n\u003cul data-end=\"1024\" data-start=\"941\"\u003e\n\u003cli data-end=\"957\" data-start=\"941\" data-section-id=\"140qgr9\"\u003e\n\u003cp data-end=\"957\" data-start=\"943\"\u003eMove pistons\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"981\" data-start=\"958\" data-section-id=\"ofapgb\"\u003e\n\u003cp data-end=\"981\" data-start=\"960\"\u003eApply braking force\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1002\" data-start=\"982\" data-section-id=\"8sg11l\"\u003e\n\u003cp data-end=\"1002\" data-start=\"984\"\u003eLift heavy loads\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1024\" data-start=\"1003\" data-section-id=\"1rmsn4u\"\u003e\n\u003cp data-end=\"1024\" data-start=\"1005\"\u003eOperate machinery\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-end=\"1066\" data-start=\"1031\" data-section-id=\"fotdjf\"\u003e\u003cstrong\u003e6. Maintain system operation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-end=\"1129\" data-start=\"1067\"\u003e\n\u003cli data-end=\"1094\" data-start=\"1067\" data-section-id=\"17meh7p\"\u003e\n\u003cp data-end=\"1094\" data-start=\"1069\"\u003eKeeps fluid circulating\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-end=\"1129\" data-start=\"1095\" data-section-id=\"1j2efyx\"\u003e\n\u003cp data-end=\"1129\" data-start=\"1097\"\u003eEnsures consistent performance\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 data-end=\"703\" data-start=\"585\"\u003e\u003cstrong data-end=\"597\" data-start=\"585\"\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSigns of Hydraulic Pump Motor S4784079282:\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp data-section-id=\"mr0yqs\" data-start=\"217\" data-end=\"256\"\u003e\u003cstrong\u003e1. Unusual noise (first warning)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"257\" data-end=\"456\"\u003e\n\u003cli data-section-id=\"gx911r\" data-start=\"257\" data-end=\"296\"\u003e\n\u003cp data-start=\"259\" data-end=\"296\"\u003eWhining, buzzing, or grinding sound\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"x8wsf6\" data-start=\"297\" data-end=\"348\"\u003e\n\u003cp data-start=\"299\" data-end=\"348\"\u003eOften gets louder when the system is under load\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"52nlh1\" data-start=\"349\" data-end=\"456\"\u003e\n\u003cp data-start=\"351\" data-end=\"456\"\u003eIn ABS systems, you may hear it during hard braking tied to the \u003cstrong data-start=\"415\" data-end=\"456\"\u003e\u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eanti-lock braking system\u003c\/span\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-section-id=\"qrlzfj\" data-start=\"463\" data-end=\"499\"\u003e\u003cstrong\u003e2. Slow or weak performance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"500\" data-end=\"667\"\u003e\n\u003cli data-section-id=\"10vbdr0\" data-start=\"500\" data-end=\"608\"\u003e\n\u003cp data-start=\"502\" data-end=\"524\"\u003eSystem feels sluggish:\u003c\/p\u003e\n\u003cul data-start=\"527\" data-end=\"608\"\u003e\n\u003cli data-section-id=\"vum91j\" data-start=\"527\" data-end=\"565\"\u003e\n\u003cp data-start=\"529\" data-end=\"565\"\u003eSlow brake pressure recovery (ABS)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1r9p1n1\" data-start=\"568\" data-end=\"608\"\u003e\n\u003cp data-start=\"570\" data-end=\"608\"\u003eSlow lifting or movement (equipment)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"89pkth\" data-start=\"609\" data-end=\"667\"\u003e\n\u003cp data-start=\"611\" data-end=\"667\"\u003eIndicates the pump isn’t building pressure efficiently\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-section-id=\"rwwn2\" data-start=\"674\" data-end=\"708\"\u003e\u003cstrong\u003e3. Intermittent operation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"709\" data-end=\"845\"\u003e\n\u003cli data-section-id=\"jhny54\" data-start=\"709\" data-end=\"740\"\u003e\n\u003cp data-start=\"711\" data-end=\"740\"\u003eWorks sometimes, then stops\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"fuaov9\" data-start=\"741\" data-end=\"845\"\u003e\n\u003cp data-start=\"743\" data-end=\"769\"\u003eMay cut in and out due to:\u003c\/p\u003e\n\u003cul data-start=\"772\" data-end=\"845\"\u003e\n\u003cli data-section-id=\"nvqpbp\" data-start=\"772\" data-end=\"812\"\u003e\n\u003cp data-start=\"774\" data-end=\"812\"\u003eWorn motor brushes (electric motors)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"129prug\" data-start=\"815\" data-end=\"845\"\u003e\n\u003cp data-start=\"817\" data-end=\"845\"\u003eInternal electrical faults\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-section-id=\"if2zpu\" data-start=\"852\" data-end=\"875\"\u003e\u003cstrong\u003e4. Overheating\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"876\" data-end=\"1001\"\u003e\n\u003cli data-section-id=\"z104dh\" data-start=\"876\" data-end=\"904\"\u003e\n\u003cp data-start=\"878\" data-end=\"904\"\u003eMotor gets unusually hot\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"cixj7a\" data-start=\"905\" data-end=\"936\"\u003e\n\u003cp data-start=\"907\" data-end=\"936\"\u003eMay produce a burning smell\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"8q4w84\" data-start=\"937\" data-end=\"1001\"\u003e\n\u003cp data-start=\"939\" data-end=\"949\"\u003eCaused by:\u003c\/p\u003e\n\u003cul data-start=\"952\" data-end=\"1001\"\u003e\n\u003cli data-section-id=\"omwg99\" data-start=\"952\" data-end=\"973\"\u003e\n\u003cp data-start=\"954\" data-end=\"973\"\u003eInternal friction\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"7mgew5\" data-start=\"976\" data-end=\"1001\"\u003e\n\u003cp data-start=\"978\" data-end=\"1001\"\u003eElectrical resistance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-section-id=\"tox76w\" data-start=\"1008\" data-end=\"1051\"\u003e\u003cstrong\u003e5. Blown fuse or electrical issues\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1052\" data-end=\"1152\"\u003e\n\u003cli data-section-id=\"qwge34\" data-start=\"1052\" data-end=\"1112\"\u003e\n\u003cp data-start=\"1054\" data-end=\"1064\"\u003eMotor may:\u003c\/p\u003e\n\u003cul data-start=\"1067\" data-end=\"1112\"\u003e\n\u003cli data-section-id=\"lfetpz\" data-start=\"1067\" data-end=\"1084\"\u003e\n\u003cp data-start=\"1069\" data-end=\"1084\"\u003eTrip circuits\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"w1g2kr\" data-start=\"1087\" data-end=\"1112\"\u003e\n\u003cp data-start=\"1089\" data-end=\"1112\"\u003eBlow fuses repeatedly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"48la1r\" data-start=\"1113\" data-end=\"1152\"\u003e\n\u003cp data-start=\"1115\" data-end=\"1152\"\u003eSuggests internal short or overload\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-section-id=\"18gfwa8\" data-start=\"1159\" data-end=\"1199\"\u003e\u003cstrong\u003e6. Low or no hydraulic pressure\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1200\" data-end=\"1336\"\u003e\n\u003cli data-section-id=\"l6hgwv\" data-start=\"1200\" data-end=\"1231\"\u003e\n\u003cp data-start=\"1202\" data-end=\"1231\"\u003eSystem can’t build pressure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1b27joi\" data-start=\"1232\" data-end=\"1336\"\u003e\n\u003cp data-start=\"1234\" data-end=\"1243\"\u003eSymptoms:\u003c\/p\u003e\n\u003cul data-start=\"1246\" data-end=\"1336\"\u003e\n\u003cli data-section-id=\"18cwcth\" data-start=\"1246\" data-end=\"1269\"\u003e\n\u003cp data-start=\"1248\" data-end=\"1269\"\u003eWeak braking assist\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"c1anpb\" data-start=\"1272\" data-end=\"1300\"\u003e\n\u003cp data-start=\"1274\" data-end=\"1300\"\u003eNo ABS pressure recovery\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"pzptj\" data-start=\"1303\" data-end=\"1336\"\u003e\n\u003cp data-start=\"1305\" data-end=\"1336\"\u003eEquipment won’t move properly\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-section-id=\"119o9to\" data-start=\"1343\" data-end=\"1383\"\u003e\u003cstrong\u003e7. ABS or system warning lights\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"1384\" data-end=\"1397\"\u003e(In vehicles)\u003c\/p\u003e\n\u003cul data-start=\"1398\" data-end=\"1502\"\u003e\n\u003cli data-section-id=\"1nfycog\" data-start=\"1398\" data-end=\"1420\"\u003e\n\u003cp data-start=\"1400\" data-end=\"1420\"\u003eABS light comes on\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"12lyxbx\" data-start=\"1421\" data-end=\"1460\"\u003e\n\u003cp data-start=\"1423\" data-end=\"1460\"\u003eSystem disables due to pump failure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1a8183s\" data-start=\"1461\" data-end=\"1502\"\u003e\n\u003cp data-start=\"1463\" data-end=\"1502\"\u003eOften confused with modulator failure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-section-id=\"xp5xpc\" data-start=\"1509\" data-end=\"1551\"\u003e\u003cstrong\u003e8. Complete failure (no operation)\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1552\" data-end=\"1669\"\u003e\n\u003cli data-section-id=\"1qb1aio\" data-start=\"1552\" data-end=\"1580\"\u003e\n\u003cp data-start=\"1554\" data-end=\"1580\"\u003eMotor doesn’t run at all\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"19ncq6k\" data-start=\"1581\" data-end=\"1619\"\u003e\n\u003cp data-start=\"1583\" data-end=\"1619\"\u003eNo sound, no pressure, no response\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"e6e6d\" data-start=\"1620\" data-end=\"1669\"\u003e\n\u003cp data-start=\"1622\" data-end=\"1669\"\u003eSystem relying on it stops working completely\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 data-end=\"476\" data-start=\"97\"\u003e\u003cstrong data-end=\"151\" data-start=\"97\"\u003e\u003cbr\u003eAbout the Manufacturer – Wabco:\u003c\/strong\u003e\u003cbr data-end=\"154\" data-start=\"151\"\u003e\u003cstrong data-end=\"9\" data-start=\"0\"\u003eWABCO\u003c\/strong\u003e (originally the\u003cstrong\u003e \u003c\/strong\u003eWestinghouse Air Brake Company) is a global leader in vehicle control systems for commercial vehicles such as trucks, buses, and trailers. Founded in 1869 and later becoming a part of ZF Friedrichshafen AG in 2020, WABCO is best known for pioneering advanced braking, stability, and suspension technologies.\u003cbr\u003e\u003c\/p\u003e","brand":"Wabco","offers":[{"title":"Default Title","offer_id":50610985009399,"sku":"S4784079282","price":1475.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/7080\/3959\/files\/photo_2026-03-20_04-19-11.jpg?v=1773973576","url":"https:\/\/forcetruckparts.com\/products\/s4784079282-genuine-wabco%c2%ae-hydraulic-pump-motor-kit","provider":"Force Truck Parts","version":"1.0","type":"link"}