{"product_id":"liftmaster-k75-13334","title":"LiftMaster K75-13334 GH Bevel Gear Service Assembly — 3\/4-Inch ID, 3 HP Application","description":"\u003cp\u003e\u003cstrong\u003eThe LiftMaster K75-13334 is the bevel-gear service assembly identified with a 3\/4-inch inside diameter for the documented 3 HP GH commercial operator arrangement. Manufacturer parts drawings place the 75-13334 reference in the hand-chain shaft assembly. Match that exact gear position and service configuration rather than selecting any bevel gear with the same nominal bore. Select the replacement by the complete part number and the installed equipment configuration. A similar photograph or a shared LiftMaster brand name does not establish interchangeability. Confirm the applicable service drawing before ordering so the repair addresses the correct component and its related mounting, connection and operating requirements.\u003c\/strong\u003e\u003c\/p\u003e\u003ch2\u003eCompatibility — Models, Versions and Exclusions\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel or selection point\u003c\/th\u003e\n\u003cth\u003eCompatibility requirement\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eGH 3 HP configuration\u003c\/td\u003e\n\u003ctd\u003eConfirm the exact parts drawing and installed gear reference.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eHand-chain shaft arrangement\u003c\/td\u003e\n\u003ctd\u003eIdentify the correct mating position before ordering.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e08-13333 adjacent gear\u003c\/td\u003e\n\u003ctd\u003eA separate gear reference; do not transfer its tooth specification automatically.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther GH ratings\u003c\/td\u003e\n\u003ctd\u003eA shared family name or bore does not establish interchangeability.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eIdentify the Assembly and Plan the Repair\u003c\/h2\u003e\u003cp\u003eThe bevel gear must mesh correctly with the mating gear in the approved manual-hoist mechanism. Inspect the shaft, bearings, retention and tooth condition together. Replacing one gear without correcting a worn support or damaged mating component can leave the mechanism noisy, misaligned or unreliable.\u003c\/p\u003e\u003cp\u003eThe manufacturer drawing distinguishes 75-13334 from a nearby 08-13333 gear described with its own tooth count. Keep those callouts separate instead of transferring a specification from one row to another. Obtain the current kit contents and any missing dimensional information before dismantling the hoist, and follow the documented method for setup and lubrication.\u003c\/p\u003e\u003cp\u003eCompare the replacement with the installed service arrangement before dismantling the equipment. Photograph the part’s location and record the complete model and visible service numbers. Inspect the surrounding attachment points and mating components for wear, impact damage or misalignment. Replacing one worn item will not correct a damaged support or another component that continues to impose abnormal loads on the repaired assembly.\u003c\/p\u003e\u003ch2\u003eSpecifications and Product Identification\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrdering reference\u003c\/td\u003e\n\u003ctd\u003eK75-13334\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eComponent\u003c\/td\u003e\n\u003ctd\u003eBevel gear service assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInside diameter\u003c\/td\u003e\n\u003ctd\u003e3\/4 inch\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDocumented rating context\u003c\/td\u003e\n\u003ctd\u003e3 HP GH arrangement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDrawing reference\u003c\/td\u003e\n\u003ctd\u003e75-13334\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAssembly location\u003c\/td\u003e\n\u003ctd\u003eHand-chain shaft mechanism in the documented drawing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eBefore Ordering\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRecord the full GH model and 3 HP service configuration.\u003c\/li\u003e\n\u003cli\u003eLocate 75-13334 in the hand-chain shaft drawing.\u003c\/li\u003e\n\u003cli\u003eInspect the mating gear, shaft and bearings.\u003c\/li\u003e\n\u003cli\u003eConfirm current supplied components and the correct setup procedure.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003ePackage Contents and Separate Requirements\u003c\/h2\u003e\u003cp\u003eThis offer identifies the bevel-gear service assembly. Confirm the current gear and associated retention pieces supplied. A complete hand-chain shaft kit, mating gear, chain wheel, gearbox, motor and operator are not established as included merely because they appear together in an exploded drawing.\u003c\/p\u003e\u003ch2 class=\"safety-warning\"\u003eSafety Warnings — Read Before Installation or Service\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWARNING: A moving commercial door and exposed gh bevel gear service assembly — 3\/4-inch id, 3 hp application can cause serious injury or death. Have a trained door-systems technician perform installation and service.\u003c\/li\u003e\n\u003cli\u003eDisconnect mains power and any battery backup before mechanical work or wiring. Secure the door against unexpected movement as directed by its manufacturer.\u003c\/li\u003e\n\u003cli\u003eDo not work on springs, cables or counterbalance components without appropriate training. Never bypass safety sensors or increase force to overcome binding.\u003c\/li\u003e\n\u003cli\u003eRestore guards and complete the model-specific travel, reversal and protection-device tests before returning the door to normal operation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRelated Products and Important Differences\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/garage-doorparts.com\/products\/liftmaster-photocell-kit-indoor-only-for-30-wide-openings\"\u003eCPS-U monitored photo eyes\u003c\/a\u003e — separate protection devices for approved commercial-door controls; match the operator and environment.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/garage-doorparts.com\/products\/liftmaster-extended-duty-trolley-operator\"\u003eTDC12X1BMC MAXUM trolley operator\u003c\/a\u003e — a complete-operator comparison, not evidence that this legacy service part fits MAXUM.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs the 3\/4-inch dimension the bore?\u003c\/h3\u003e\u003cp\u003eThe documented description identifies a 3\/4-inch inside diameter. Verify the actual shaft and complete gear geometry.\u003c\/p\u003e\u003ch3\u003eIs this the adjacent 24-tooth gear?\u003c\/h3\u003e\u003cp\u003eDo not assume so. The manufacturer gives 08-13333 a separate callout and tooth description.\u003c\/p\u003e\u003ch3\u003eWill it fit every GH operator?\u003c\/h3\u003e\u003cp\u003eNo universal GH fit is claimed. Match the rating, installed assembly and exact service reference.\u003c\/p\u003e\u003ch3\u003eDoes it include a complete manual hoist?\u003c\/h3\u003e\u003cp\u003eNo. It identifies the bevel-gear service item; other hoist components require their own package and condition checks.\u003c\/p\u003e\u003ch2\u003eNeed Help Confirming the Right Product?\u003c\/h2\u003e\u003cp\u003e\u003ca href=\"https:\/\/garage-doorparts.com\/pages\/contact\"\u003eContact Garage-DoorParts.com before ordering\u003c\/a\u003e. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.\u003c\/p\u003e","brand":"Controlled products","offers":[{"title":"Default Title","offer_id":60730197410078,"sku":"K75-13334","price":1055.15,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/2781\/5710\/files\/k75-13334.png?v=1793254698","url":"https:\/\/garage-doorparts.com\/products\/liftmaster-k75-13334","provider":"garage-doorparts.com","version":"1.0","type":"link"}