{"product_id":"generac-0663860srv-brush-holder-assembly-genuine-oem-replacement-generator-brush-holder-assembly","title":"Generac 0663860SRV Brush Holder Assembly – Genuine OEM Replacement Generator Brush Holder Assembly","description":"\u003cdiv class=\"\" data-turn-id-container=\"1c1a2731-d064-4572-9cc1-b31f661e17fb\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-(--sticky-padding-top)\" dir=\"auto\" data-turn-id=\"1c1a2731-d064-4572-9cc1-b31f661e17fb\" data-turn-id-container=\"1c1a2731-d064-4572-9cc1-b31f661e17fb\" data-testid=\"conversation-turn-103\" data-turn=\"user\"\u003e\u003c\/section\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-6a5fddba-b608-83ea-9724-ade0503e7e42-94\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-6a5fddba-b608-83ea-9724-ade0503e7e42-94\" data-turn-id-container=\"request-6a5fddba-b608-83ea-9724-ade0503e7e42-94\" data-testid=\"conversation-turn-104\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-15 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv data-conversation-screenshot-content=\"\" class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden @[53.5rem]\/main:[--thread-content-max-width:48rem] relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"a5864a74-00b0-5c88-95bd-0b9e8b42ee5c\" data-turn-start-message=\"true\" dir=\"auto\" data-message-model-slug=\"gpt-5.6-sol-wm\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp data-start=\"0\" data-end=\"220\"\u003e\u003cstrong data-start=\"0\" data-end=\"16\"\u003ePart Number:\u003c\/strong\u003e 0663860SRV\u003cbr data-start=\"27\" data-end=\"30\"\u003e\u003cstrong data-start=\"30\" data-end=\"43\"\u003eCategory:\u003c\/strong\u003e Generator Parts → Alternator Components → Brush Holder Assemblies\u003cbr data-start=\"109\" data-end=\"112\"\u003e\u003cstrong data-start=\"112\" data-end=\"121\"\u003eType:\u003c\/strong\u003e Generac 0663860SRV Brush Holder Assembly – Genuine OEM Replacement Generator Brush Holder Assembly\u003c\/p\u003e\n\u003chr data-start=\"222\" data-end=\"225\"\u003e\n\u003cp data-start=\"227\" data-end=\"739\"\u003eThe Generac 0663860SRV Brush Holder Assembly is a genuine OEM replacement alternator component designed for compatible Generac generators. This assembly positions and supports the generator’s carbon brushes so they maintain proper electrical contact with the rotating slip rings. Manufactured to original equipment specifications, it provides the correct brush alignment, spring pressure, electrical connections, and mounting fit required when replacing a cracked, burned, worn, or damaged brush holder assembly.\u003c\/p\u003e\n\u003chr data-start=\"741\" data-end=\"744\"\u003e\n\u003ch2 data-section-id=\"1pi78xj\" data-start=\"746\" data-end=\"776\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"749\" data-end=\"776\"\u003eKey Features \u0026amp; Benefits\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"778\" data-end=\"1281\"\u003e\n\u003cli data-section-id=\"1ypomfg\" data-start=\"778\" data-end=\"803\"\u003ePart Number: 0663860SRV\u003c\/li\u003e\n\u003cli data-section-id=\"1n1ya84\" data-start=\"804\" data-end=\"842\"\u003eGenuine OEM Generac replacement part\u003c\/li\u003e\n\u003cli data-section-id=\"avf3kv\" data-start=\"843\" data-end=\"887\"\u003eDesigned for compatible Generac generators\u003c\/li\u003e\n\u003cli data-section-id=\"19ipnfq\" data-start=\"888\" data-end=\"934\"\u003eReplacement alternator brush holder assembly\u003c\/li\u003e\n\u003cli data-section-id=\"1jccc9o\" data-start=\"935\" data-end=\"982\"\u003eSupports and aligns designated carbon brushes\u003c\/li\u003e\n\u003cli data-section-id=\"1p721s5\" data-start=\"983\" data-end=\"1033\"\u003eHelps maintain proper brush-to-slip-ring contact\u003c\/li\u003e\n\u003cli data-section-id=\"1afd1y8\" data-start=\"1034\" data-end=\"1072\"\u003eSupports alternator field excitation\u003c\/li\u003e\n\u003cli data-section-id=\"1nc46wv\" data-start=\"1073\" data-end=\"1117\"\u003eHelps maintain consistent generator output\u003c\/li\u003e\n\u003cli data-section-id=\"uvvqep\" data-start=\"1118\" data-end=\"1173\"\u003eDirect replacement for a damaged or worn brush holder\u003c\/li\u003e\n\u003cli data-section-id=\"fyhvnz\" data-start=\"1174\" data-end=\"1225\"\u003eManufactured to original equipment specifications\u003c\/li\u003e\n\u003cli data-section-id=\"1u7e18g\" data-start=\"1226\" data-end=\"1281\"\u003eIdeal for generator electrical repair and maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1283\" data-end=\"1286\"\u003e\n\u003ch2 data-section-id=\"id1bjs\" data-start=\"1288\" data-end=\"1319\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1291\" data-end=\"1319\"\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"1321\" data-end=\"1608\"\u003e\n\u003cli data-section-id=\"1ypomfg\" data-start=\"1321\" data-end=\"1346\"\u003ePart Number: 0663860SRV\u003c\/li\u003e\n\u003cli data-section-id=\"1419b18\" data-start=\"1347\" data-end=\"1370\"\u003eManufacturer: Generac\u003c\/li\u003e\n\u003cli data-section-id=\"1l01lxm\" data-start=\"1371\" data-end=\"1418\"\u003eProduct Type: Generator Brush Holder Assembly\u003c\/li\u003e\n\u003cli data-section-id=\"1q71rq5\" data-start=\"1419\" data-end=\"1491\"\u003eInstallation Location: Generator alternator or generator-head assembly\u003c\/li\u003e\n\u003cli data-section-id=\"utgau5\" data-start=\"1492\" data-end=\"1562\"\u003eApplication: Carbon-brush support, alignment, and electrical contact\u003c\/li\u003e\n\u003cli data-section-id=\"t73psd\" data-start=\"1563\" data-end=\"1578\"\u003eOEM Part: Yes\u003c\/li\u003e\n\u003cli data-section-id=\"1ic2kyp\" data-start=\"1579\" data-end=\"1608\"\u003eQuantity: Sold Individually\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003chr data-start=\"1610\" data-end=\"1613\"\u003e\n\u003ch2 data-section-id=\"4jtp2i\" data-start=\"1615\" data-end=\"1645\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"1618\" data-end=\"1645\"\u003eCompatible Applications\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"1647\" data-end=\"1784\"\u003eThe Generac 0663860SRV Brush Holder Assembly is designed for use with select Generac generators and compatible alternator configurations.\u003c\/p\u003e\n\u003cp data-start=\"1786\" data-end=\"2021\"\u003eAlways verify the generator model, serial number, alternator configuration, original part number, connector arrangement, mounting design, included components, and applicable parts diagram before ordering to ensure proper compatibility.\u003c\/p\u003e\n\u003chr data-start=\"2023\" data-end=\"2026\"\u003e\n\u003ch2 data-section-id=\"147sz9r\" data-start=\"2028\" data-end=\"2072\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2031\" data-end=\"2072\"\u003eFunction of the Brush Holder Assembly\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2074\" data-end=\"2126\"\u003eThe 0663860SRV Brush Holder Assembly is designed to:\u003c\/p\u003e\n\u003cul data-start=\"2128\" data-end=\"2535\"\u003e\n\u003cli data-section-id=\"1scp5z1\" data-start=\"2128\" data-end=\"2189\"\u003eHold the carbon brushes in their proper operating positions\u003c\/li\u003e\n\u003cli data-section-id=\"1jgrz05\" data-start=\"2190\" data-end=\"2248\"\u003eMaintain brush alignment against the rotating slip rings\u003c\/li\u003e\n\u003cli data-section-id=\"13l6f81\" data-start=\"2249\" data-end=\"2305\"\u003eSupport consistent spring pressure as the brushes wear\u003c\/li\u003e\n\u003cli data-section-id=\"10eoqbu\" data-start=\"2306\" data-end=\"2359\"\u003eTransfer excitation current to the alternator rotor\u003c\/li\u003e\n\u003cli data-section-id=\"84beyb\" data-start=\"2360\" data-end=\"2422\"\u003eHelp create the magnetic field required for power generation\u003c\/li\u003e\n\u003cli data-section-id=\"1w8s8f8\" data-start=\"2423\" data-end=\"2472\"\u003eSupport stable and dependable electrical output\u003c\/li\u003e\n\u003cli data-section-id=\"46929t\" data-start=\"2473\" data-end=\"2535\"\u003eRestore the generator’s original brush-contact functionality\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2537\" data-end=\"2661\"\u003eProper brush alignment and contact pressure are essential for dependable alternator excitation and generator voltage output.\u003c\/p\u003e\n\u003chr data-start=\"2663\" data-end=\"2666\"\u003e\n\u003ch2 data-section-id=\"1h7g79j\" data-start=\"2668\" data-end=\"2709\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"2671\" data-end=\"2709\"\u003eCommon Signs Replacement Is Needed\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp data-start=\"2711\" data-end=\"2770\"\u003eReplace or inspect the brush holder assembly if you notice:\u003c\/p\u003e\n\u003cul data-start=\"2772\" data-end=\"3214\"\u003e\n\u003cli data-section-id=\"1glx5lh\" data-start=\"2772\" data-end=\"2829\"\u003eGenerator engine runs but produces no electrical output\u003c\/li\u003e\n\u003cli data-section-id=\"1m4izkf\" data-start=\"2830\" data-end=\"2880\"\u003eOutput voltage is low, intermittent, or unstable\u003c\/li\u003e\n\u003cli data-section-id=\"1nlilnn\" data-start=\"2881\" data-end=\"2928\"\u003eBrush holder is cracked, melted, or distorted\u003c\/li\u003e\n\u003cli data-section-id=\"q65q0m\" data-start=\"2929\" data-end=\"2968\"\u003eCarbon brushes bind within the holder\u003c\/li\u003e\n\u003cli data-section-id=\"13hwf07\" data-start=\"2969\" data-end=\"3013\"\u003eBrush springs are weak, broken, or damaged\u003c\/li\u003e\n\u003cli data-section-id=\"1wmgh0j\" data-start=\"3014\" data-end=\"3062\"\u003eElectrical leads or terminals show heat damage\u003c\/li\u003e\n\u003cli data-section-id=\"1tlckzt\" data-start=\"3063\" data-end=\"3106\"\u003eExcessive arcing occurs at the slip rings\u003c\/li\u003e\n\u003cli data-section-id=\"13ll1tj\" data-start=\"3107\" data-end=\"3130\"\u003eBrushes wear unevenly\u003c\/li\u003e\n\u003cli data-section-id=\"1shqaky\" data-start=\"3131\" data-end=\"3165\"\u003eAssembly will not mount securely\u003c\/li\u003e\n\u003cli data-section-id=\"1c7atxg\" data-start=\"3166\" data-end=\"3214\"\u003eDiagnostic testing confirms poor brush contact\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"3216\" data-end=\"3430\"\u003eOutput problems can also result from worn brushes, damaged slip rings, loose wiring, a failed voltage regulator, or faults within the rotor or stator. Diagnose the complete generating system before replacing parts.\u003c\/p\u003e\n\u003chr data-start=\"3432\" data-end=\"3435\"\u003e\n\u003ch2 data-section-id=\"bnihmp\" data-start=\"3437\" data-end=\"3472\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"3440\" data-end=\"3472\"\u003eInstallation \u0026amp; Service Notes\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"3474\" data-end=\"4468\"\u003e\n\u003cli data-section-id=\"ojosrm\" data-start=\"3474\" data-end=\"3549\"\u003eShut down the generator and allow it to cool completely before servicing.\u003c\/li\u003e\n\u003cli data-section-id=\"e1ypy3\" data-start=\"3550\" data-end=\"3611\"\u003eDisconnect all electrical loads and external power sources.\u003c\/li\u003e\n\u003cli data-section-id=\"1a6ox7q\" data-start=\"3612\" data-end=\"3685\"\u003eDisable automatic startup according to the manufacturer’s instructions.\u003c\/li\u003e\n\u003cli data-section-id=\"7qw9fq\" data-start=\"3686\" data-end=\"3755\"\u003eDisconnect the starting battery, beginning with the negative cable.\u003c\/li\u003e\n\u003cli data-section-id=\"13e8bta\" data-start=\"3756\" data-end=\"3835\"\u003eConfirm that no hazardous voltage is present before accessing the alternator.\u003c\/li\u003e\n\u003cli data-section-id=\"1qmjqcz\" data-start=\"3836\" data-end=\"3902\"\u003eLabel or photograph the original wiring and connector positions.\u003c\/li\u003e\n\u003cli data-section-id=\"7fkeko\" data-start=\"3903\" data-end=\"3976\"\u003eRemove the existing brush holder without pulling directly on its wires.\u003c\/li\u003e\n\u003cli data-section-id=\"1edhtrr\" data-start=\"3977\" data-end=\"4053\"\u003eInspect the carbon brushes, springs, terminals, and slip rings for damage.\u003c\/li\u003e\n\u003cli data-section-id=\"1w6bsf7\" data-start=\"4054\" data-end=\"4122\"\u003eClean the mounting area using the manufacturer-approved procedure.\u003c\/li\u003e\n\u003cli data-section-id=\"nz0ye2\" data-start=\"4123\" data-end=\"4197\"\u003eInstall the 0663860SRV Brush Holder Assembly in the correct orientation.\u003c\/li\u003e\n\u003cli data-section-id=\"1k3tjjq\" data-start=\"4198\" data-end=\"4273\"\u003eConfirm that the brushes move freely and contact the slip rings properly.\u003c\/li\u003e\n\u003cli data-section-id=\"gk47f9\" data-start=\"4274\" data-end=\"4348\"\u003eReconnect all wiring according to the applicable Generac wiring diagram.\u003c\/li\u003e\n\u003cli data-section-id=\"4a8af7\" data-start=\"4349\" data-end=\"4394\"\u003eReinstall all protective covers and guards.\u003c\/li\u003e\n\u003cli data-section-id=\"1jvszhy\" data-start=\"4395\" data-end=\"4468\"\u003eVerify generator voltage and frequency with appropriate test equipment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"4470\" data-end=\"4829\"\u003e\u003cstrong data-start=\"4470\" data-end=\"4484\"\u003eImportant:\u003c\/strong\u003e Brush holder assemblies may be supplied with different included components depending on the service package. Verify the product contents before ordering. Generator electrical systems may contain hazardous voltage and can start automatically, so professional installation is recommended when proper electrical service procedures are unavailable.\u003c\/p\u003e\n\u003chr data-start=\"4831\" data-end=\"4834\"\u003e\n\u003ch2 data-section-id=\"d80cxu\" data-start=\"4836\" data-end=\"4870\"\u003e\u003cspan role=\"text\"\u003e\u003cstrong data-start=\"4839\" data-end=\"4870\"\u003eMaintenance Recommendations\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h2\u003e\n\u003cul data-start=\"4872\" data-end=\"5494\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\n\u003cli data-section-id=\"nhm0ar\" data-start=\"4872\" data-end=\"4938\"\u003eInspect the brush holder during scheduled generator maintenance.\u003c\/li\u003e\n\u003cli data-section-id=\"utci23\" data-start=\"4939\" data-end=\"4991\"\u003eCheck carbon-brush length and condition regularly.\u003c\/li\u003e\n\u003cli data-section-id=\"nge2q3\" data-start=\"4992\" data-end=\"5049\"\u003eConfirm that each brush moves freely within the holder.\u003c\/li\u003e\n\u003cli data-section-id=\"onwaug\" data-start=\"5050\" data-end=\"5107\"\u003eKeep the assembly free of carbon dust, oil, and debris.\u003c\/li\u003e\n\u003cli data-section-id=\"dyow0o\" data-start=\"5108\" data-end=\"5173\"\u003eInspect the slip rings for scoring, burning, and contamination.\u003c\/li\u003e\n\u003cli data-section-id=\"10tupvw\" data-start=\"5174\" data-end=\"5243\"\u003eInvestigate excessive arcing or unstable generator output promptly.\u003c\/li\u003e\n\u003cli data-section-id=\"1rwv1n1\" data-start=\"5244\" data-end=\"5313\"\u003eReplace damaged springs, brushes, or holder components as required.\u003c\/li\u003e\n\u003cli data-section-id=\"ei4lrz\" data-start=\"5314\" data-end=\"5375\"\u003eAvoid contaminating the brush contact surfaces with grease.\u003c\/li\u003e\n\u003cli data-section-id=\"1vw8h5\" data-start=\"5376\" data-end=\"5494\" data-is-last-node=\"\"\u003eUse genuine OEM replacement parts to maintain proper alignment, electrical contact, and dependable generator output.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e","brand":"Generac","offers":[{"title":"Default Title","offer_id":53592936153451,"sku":"0663860SRV","price":19.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0917\/9201\/5723\/files\/0663860SRV.jpg?v=1784738388","url":"https:\/\/generalsprayers.com\/products\/generac-0663860srv-brush-holder-assembly-genuine-oem-replacement-generator-brush-holder-assembly","provider":"GeneralSprayers","version":"1.0","type":"link"}