{"product_id":"4324330530-genuine-wabco-ad-syss-twin-with-tcv-and-coal-24v-0-8mm","title":"4324330530 | Genuine WABCO AD SysS Twin with TCV and Coal, 24V, 0.8mm","description":"\u003cp\u003e\u003cstrong\u003eDescription:\u003cbr\u003e\u003c\/strong\u003eAn AD SysS Twin with TCV and Coal \u003cstrong\u003e4324330530 \u003c\/strong\u003eis a WABCO\/ZF System Saver Twin air dryer assembly used on air-brake-equipped heavy trucks and buses. Its job is to clean, dry, and regulate the compressed air before it enters the vehicle's air brake system.  AD SysS Twin with TCV and Coal, 24V, 0.8mm Kenworth\u003cspan data-start=\"489\" data-end=\"501\"\u003e, \u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003ePeterbilt, \u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eFreightliner, \u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eVolvo Trucks, \u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eMack Trucks, \u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eWestern Star\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e: 4324330530\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\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSpecifications:\u003c\/strong\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003cul class=\"list-group techSpecs\"\u003e\n\u003cli class=\"list-group-item row\"\u003e\n\u003cdiv class=\"col-sm-6 text-gray-bold\"\u003ePart type\u003c\/div\u003e\n\u003cdiv class=\"col-sm-6\"\u003ePremium original quality\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"list-group-item row\"\u003e\n\u003cdiv class=\"col-sm-6 text-gray-bold\"\u003eProduct category\u003c\/div\u003e\n\u003cdiv class=\"col-sm-6\"\u003eDevice\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"list-group-item row\"\u003e\n\u003cdiv class=\"col-sm-6 text-gray-bold\"\u003eCalculated Volume (dm³)\u003c\/div\u003e\n\u003cdiv class=\"col-sm-6\"\u003e17.1\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"list-group-item row\"\u003e\n\u003cdiv class=\"col-sm-6 text-gray-bold\"\u003eTechnical specification\u003c\/div\u003e\n\u003cdiv class=\"col-sm-6\"\u003eOE specification\u003c\/div\u003e\n\u003c\/li\u003e\n\u003cli class=\"list-group-item row\"\u003e\n\u003cdiv class=\"col-sm-6 text-gray-bold\"\u003eSize (mm x mm x mm)\u003c\/div\u003e\n\u003cdiv class=\"col-sm-6\"\u003e286 x 188 x 318\u003c\/div\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\u003cspan\u003e\u003cstrong\u003e\u003cbr\u003eFits 4324330530 For\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\n\u003cp\u003eKenworth\u003cspan data-start=\"489\" data-end=\"501\"\u003e, \u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003ePeterbilt, \u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eFreightliner, \u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eVolvo Trucks, \u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eMack Trucks, \u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eWestern Star, \u003c\/span\u003e\u003cspan style=\"font-size: 0.875rem;\"\u003eother heavy-duty trucks and buses using WABCO air brake systems and a 24V electrical system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cspan style=\"font-size: 0.875rem;\"\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong data-start=\"585\" data-end=\"597\"\u003ePurpose of using 4324330530: \u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003cul\u003e\n\u003cli data-section-id=\"lr1owc\" data-start=\"361\" data-end=\"582\"\u003e\n\u003cstrong data-start=\"363\" data-end=\"402\"\u003eRemove moisture from compressed air\u003c\/strong\u003e\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\n\u003cul data-start=\"405\" data-end=\"582\"\u003e\n\u003cli data-section-id=\"gv2cgj\" data-start=\"405\" data-end=\"453\"\u003ePrevents water from accumulating in air tanks.\u003c\/li\u003e\n\u003cli data-section-id=\"1xiorid\" data-start=\"456\" data-end=\"512\"\u003eReduces corrosion inside valves, tanks, and air lines.\u003c\/li\u003e\n\u003cli data-section-id=\"1a845dq\" data-start=\"515\" data-end=\"582\"\u003eHelps prevent air lines and valves from freezing in cold weather.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"jb0j81\" data-start=\"584\" data-end=\"853\"\u003e\n\u003cstrong data-start=\"586\" data-end=\"621\"\u003eFilter out oil and contaminants\u003c\/strong\u003e\n\u003cul data-start=\"624\" data-end=\"853\"\u003e\n\u003cli data-section-id=\"1wzbdn\" data-start=\"624\" data-end=\"749\"\u003eThe \u003cstrong data-start=\"630\" data-end=\"660\"\u003ecoalescing (\"Coal\") filter\u003c\/strong\u003e captures fine oil aerosols from the air compressor, as well as dirt and other particles.\u003c\/li\u003e\n\u003cli data-section-id=\"1vels8o\" data-start=\"752\" data-end=\"853\"\u003eThis protects sensitive components such as brake valves, ABS modulators, and air suspension valves.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"1bnpmrt\" data-start=\"855\" data-end=\"1130\"\u003e\n\u003cstrong data-start=\"857\" data-end=\"899\"\u003eAutomatically purge collected moisture\u003c\/strong\u003e\n\u003cul data-start=\"902\" data-end=\"1130\"\u003e\n\u003cli data-section-id=\"1h6dyo8\" data-start=\"902\" data-end=\"1040\"\u003eWhen the air compressor reaches the cut-out pressure, the air dryer purges the collected water and contaminants through its purge valve.\u003c\/li\u003e\n\u003cli data-section-id=\"14awxrc\" data-start=\"1043\" data-end=\"1130\"\u003eThis keeps the drying media effective and prepares it for the next compression cycle.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"73mgyt\" data-start=\"1132\" data-end=\"1344\"\u003e\n\u003cstrong data-start=\"1134\" data-end=\"1164\"\u003eReduce compressor workload\u003c\/strong\u003e\n\u003cul data-start=\"1167\" data-end=\"1344\"\u003e\n\u003cli data-section-id=\"16kbf1a\" data-start=\"1167\" data-end=\"1344\"\u003eThe \u003cstrong data-start=\"1173\" data-end=\"1202\"\u003eTurbo Cut-Off Valve (TCV)\u003c\/strong\u003e works with the compressor unloading process during the purge cycle, helping improve efficiency and reducing unnecessary compressor operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli data-section-id=\"8nql82\" data-start=\"1346\" data-end=\"1593\"\u003e\n\u003cstrong data-start=\"1348\" data-end=\"1387\"\u003eProtect the entire pneumatic system\u003c\/strong\u003e\n\u003cul data-start=\"1390\" data-end=\"1593\"\u003e\n\u003cli data-section-id=\"zk6fbz\" data-start=\"1390\" data-end=\"1593\"\u003eClean, dry air extends the service life of components such as:\n\u003cul data-start=\"1459\" data-end=\"1593\"\u003e\n\u003cli data-section-id=\"4rm8h8\" data-start=\"1459\" data-end=\"1473\"\u003eBrake valves\u003c\/li\u003e\n\u003cli data-section-id=\"5qwvjg\" data-start=\"1478\" data-end=\"1505\"\u003eABS valves and modulators\u003c\/li\u003e\n\u003cli data-section-id=\"29akhf\" data-start=\"1510\" data-end=\"1535\"\u003eAir suspension controls\u003c\/li\u003e\n\u003cli data-section-id=\"1skkrmt\" data-start=\"1540\" data-end=\"1566\"\u003eAir-operated accessories\u003c\/li\u003e\n\u003cli data-section-id=\"n34f79\" data-start=\"1571\" data-end=\"1593\"\u003eSeals and diaphragms\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\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\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eSigns of\u003c\/strong\u003e\u003cstrong data-start=\"585\" data-end=\"597\"\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/strong\u003e\u003cstrong\u003ea\u003c\/strong\u003e\u003cstrong data-start=\"585\" data-end=\"597\"\u003e\u003cstrong\u003e \u003c\/strong\u003e\u003c\/strong\u003e\u003cstrong\u003eBad AD SysS Twin with TCV and Coal 4324330530: \u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"100%\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e \n\u003cp data-start=\"413\" data-end=\"442\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cstrong data-start=\"413\" data-end=\"442\"\u003e1. Water in the air tanks\u003c\/strong\u003e\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cul data-start=\"443\" data-end=\"672\"\u003e\n\u003cli data-section-id=\"7w552f\" data-start=\"443\" data-end=\"487\"\u003eExcessive water drains from the air tanks.\u003c\/li\u003e\n\u003cli data-section-id=\"1hb75pj\" data-start=\"488\" data-end=\"532\"\u003eRust or sludge is found in the reservoirs.\u003c\/li\u003e\n\u003cli data-section-id=\"11tqlf4\" data-start=\"533\" data-end=\"672\"\u003eThis is one of the most common signs that the desiccant cartridges are saturated or the dryer is no longer removing moisture effectively.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"674\" data-end=\"702\"\u003e\u003cstrong data-start=\"674\" data-end=\"702\"\u003e2. Oil in the air system\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"703\" data-end=\"922\"\u003e\n\u003cli data-section-id=\"em29bc\" data-start=\"703\" data-end=\"744\"\u003eOily residue in air tanks or air lines.\u003c\/li\u003e\n\u003cli data-section-id=\"7ig99d\" data-start=\"745\" data-end=\"827\"\u003eOil contaminates brake valves, suspension valves, or other pneumatic components.\u003c\/li\u003e\n\u003cli data-section-id=\"10hpw50\" data-start=\"828\" data-end=\"922\"\u003eThis can indicate a failed coalescing filter or excessive oil carryover from the compressor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"924\" data-end=\"961\"\u003e\u003cstrong data-start=\"924\" data-end=\"961\"\u003e3. Air leaks from the purge valve\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"962\" data-end=\"1176\"\u003e\n\u003cli data-section-id=\"1nw38yx\" data-start=\"962\" data-end=\"1022\"\u003eA constant hissing sound from the bottom of the air dryer.\u003c\/li\u003e\n\u003cli data-section-id=\"gb5a3s\" data-start=\"1023\" data-end=\"1087\"\u003eAir continues leaking after the purge cycle should have ended.\u003c\/li\u003e\n\u003cli data-section-id=\"1oq8d8g\" data-start=\"1088\" data-end=\"1176\"\u003ePossible causes include a worn purge valve, damaged seals, or internal valve problems.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1178\" data-end=\"1221\"\u003e\u003cstrong data-start=\"1178\" data-end=\"1221\"\u003e4. Air compressor runs more than normal\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1222\" data-end=\"1378\"\u003e\n\u003cli data-section-id=\"44sxdw\" data-start=\"1222\" data-end=\"1264\"\u003eCompressor cycles on and off frequently.\u003c\/li\u003e\n\u003cli data-section-id=\"1oifaz1\" data-start=\"1265\" data-end=\"1311\"\u003eLonger time is needed to build air pressure.\u003c\/li\u003e\n\u003cli data-section-id=\"1vadp7b\" data-start=\"1312\" data-end=\"1378\"\u003eAir pressure may struggle to reach the governor cut-out setting.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1380\" data-end=\"1413\"\u003e\u003cstrong data-start=\"1380\" data-end=\"1413\"\u003e5. Poor air pressure build-up\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1414\" data-end=\"1534\"\u003e\n\u003cli data-section-id=\"12sg7l4\" data-start=\"1414\" data-end=\"1449\"\u003eSlow pressure rise after startup.\u003c\/li\u003e\n\u003cli data-section-id=\"1pxuah7\" data-start=\"1450\" data-end=\"1481\"\u003eLow system pressure warnings.\u003c\/li\u003e\n\u003cli data-section-id=\"mxmdhw\" data-start=\"1482\" data-end=\"1534\"\u003eAir-powered accessories may not function properly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1536\" data-end=\"1575\"\u003e\u003cstrong data-start=\"1536\" data-end=\"1575\"\u003e6. Frozen air lines in cold weather\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1576\" data-end=\"1722\"\u003e\n\u003cli data-section-id=\"x0i34w\" data-start=\"1576\" data-end=\"1641\"\u003eMoisture bypasses the dryer and freezes in valves or air lines.\u003c\/li\u003e\n\u003cli data-section-id=\"1hyp2kh\" data-start=\"1642\" data-end=\"1722\"\u003eBrakes or suspension may operate sluggishly or not at all until the ice melts.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1724\" data-end=\"1768\"\u003e\u003cstrong data-start=\"1724\" data-end=\"1768\"\u003e7. Purge valve doesn't operate correctly\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul data-start=\"1769\" data-end=\"1943\"\u003e\n\u003cli data-section-id=\"15n6h9f\" data-start=\"1769\" data-end=\"1831\"\u003eNo purge blast when the compressor reaches cut-out pressure.\u003c\/li\u003e\n\u003cli data-section-id=\"1oswgxj\" data-start=\"1832\" data-end=\"1881\"\u003ePurge occurs continuously or at the wrong time.\u003c\/li\u003e\n\u003cli data-section-id=\"1d65dpw\" data-start=\"1882\" data-end=\"1943\"\u003eA loud purge that never stops can indicate a valve failure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"1945\" data-end=\"2065\"\u003e\u003cstrong data-start=\"1945\" data-end=\"1980\"\u003e8. Brake or suspension problems\u003c\/strong\u003e\u003cbr\u003eAlthough the air dryer isn't the brake control itself, contaminated air can lead to:\u003c\/p\u003e\n\u003cul data-start=\"2066\" data-end=\"2175\"\u003e\n\u003cli data-section-id=\"aw5hoz\" data-start=\"2066\" data-end=\"2087\"\u003eSticky brake valves\u003c\/li\u003e\n\u003cli data-section-id=\"ils5zt\" data-start=\"2088\" data-end=\"2108\"\u003eSlow brake release\u003c\/li\u003e\n\u003cli data-section-id=\"6ywwvy\" data-start=\"2109\" data-end=\"2132\"\u003eAir suspension faults\u003c\/li\u003e\n\u003cli data-section-id=\"1rnwtex\" data-start=\"2133\" data-end=\"2175\"\u003ePremature failure of ABS or relay valves\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\u003cstrong\u003e\u003cbr\u003eAbout the Manufacturer – Wabco:\u003cbr\u003e\u003c\/strong\u003e\u003cbr data-end=\"154\" data-start=\"151\"\u003eWABCO (originally the Westinghouse 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":50907612315895,"sku":"4324330530","price":3899.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0895\/7080\/3959\/files\/s-l1600-2025-08-28T225305.164-Photoroom_900x_4d25c0ab-7614-4509-abb3-da69320cde77.webp?v=1782929136","url":"https:\/\/forcetruckparts.com\/products\/4324330530-genuine-wabco-ad-syss-twin-with-tcv-and-coal-24v-0-8mm","provider":"Force Truck Parts","version":"1.0","type":"link"}