{"product_id":"liftmaster-q238","title":"LiftMaster Q238 \/ K75-50339 CSW Gate Limit Adjustment Cam","description":"\u003cp\u003e\u003cstrong\u003eThe LiftMaster Q238 is the CSW limit adjustment cam identified by the supplier as manufacturer part K75-50339. LiftMaster also describes this reference as a gate adjustment switch in its parts schedule. It belongs to the documented mechanical limit arrangement on applicable CSW200 equipment and must be matched to the installed assembly. This small service part should not be confused with the separate Q029 electrical limit switch or a complete limit-switch kit. Confirm the original part and operator generation before ordering.\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\u003eCSW200 \/ CSW200ULE Omni assemblies\u003c\/td\u003e\n\u003ctd\u003eManufacturer service-parts guide identifies K75-50339 within the limit-switch kit breakdown.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther CSW200 revisions\u003c\/td\u003e\n\u003ctd\u003eUse the exact revision’s parts diagram; a shared family name does not establish every limit component.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eQ029 \/ K23-50099\u003c\/td\u003e\n\u003ctd\u003eSeparate electrical limit switch; not the same service item as the adjustment cam.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectronic position encoders\u003c\/td\u003e\n\u003ctd\u003eA different feedback arrangement; this cam is not an APS encoder replacement.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eSeparate the Cam from the Electrical Limit Switch\u003c\/h2\u003e\u003cp\u003eA mechanical limit system uses several components to establish the stopping positions. The cam or adjuster and the electrical switch have different roles, even though they work together in the assembly. Identify the damaged component before ordering. Buying a new cam does not replace worn switch contacts, a damaged holder or a fault in the wiring.\u003c\/p\u003e\u003cp\u003eIf the gate stops inconsistently or travels beyond its intended position, keep it out of normal service until the cause is diagnosed. A technician should inspect the complete limit mechanism and its mounting, then follow the operator’s adjustment procedure. Do not move a limit setting simply to compensate for a bent arm, binding gate or another mechanical problem.\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\u003eSupplier SKU\u003c\/td\u003e\n\u003ctd\u003eQ238\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer reference\u003c\/td\u003e\n\u003ctd\u003eK75-50339\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSupplier description\u003c\/td\u003e\n\u003ctd\u003eCSW limit cam\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer parts terminology\u003c\/td\u003e\n\u003ctd\u003eGate adjustment switch, Q238\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eApplication\u003c\/td\u003e\n\u003ctd\u003eApplicable CSW200 mechanical limit arrangements\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSelection basis\u003c\/td\u003e\n\u003ctd\u003eExact component reference and operator generation\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 operator model and whether the installed assembly is the documented Omni configuration.\u003c\/li\u003e\n\u003cli\u003eMatch Q238 and K75-50339 to the original component or service drawing.\u003c\/li\u003e\n\u003cli\u003eInspect the companion switch, holder and adjustment mechanism.\u003c\/li\u003e\n\u003cli\u003eConfirm whether only the cam or a complete limit kit is required for the repair.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003ePackage Contents and Separate Requirements\u003c\/h2\u003e\u003cp\u003eThis listing identifies the Q238 adjustment component. A Q029 switch, holder, complete limit assembly, control board or wiring harness is not promised as included. Confirm the current carton and any separate fasteners needed. When consulting an exploded drawing, distinguish the individual item number from the larger kit containing several associated components.\u003c\/p\u003e\u003ch2 class=\"safety-warning\"\u003eSafety Warnings — Read Before Installation or Service\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWARNING: Incorrect travel limits can allow dangerous gate movement. Service requires a qualified gate-systems technician.\u003c\/li\u003e\n\u003cli\u003eIsolate all applicable power and secure the gate before accessing or replacing limit hardware.\u003c\/li\u003e\n\u003cli\u003eDo not bypass the limit circuit or operate normally with unreliable stopping positions. Keep people clear during supervised setup.\u003c\/li\u003e\n\u003cli\u003eAfter adjustment, verify both travel endpoints and all required reversal and entrapment-protection responses before normal use.\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-lmrrul-monitored-retro-reflective-photo-eye\"\u003eLMRRUL monitored photo eye\u003c\/a\u003e — a separate protection option only where the exact operator and board approve it; not a universal legacy-system retrofit.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/garage-doorparts.com\/products\/liftmaster-lmwekitu-monitored-wireless-edge-kit-for-gate-operators\"\u003eLMWEKITU monitored wireless edge kit\u003c\/a\u003e — a separate monitored-edge system requiring documented control compatibility; it does not replace a travel-limit component.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eWhy is this called both a cam and an adjustment switch?\u003c\/h3\u003e\u003cp\u003eThe supplier uses limit cam while LiftMaster’s parts schedule uses gate adjustment switch. The exact K75-50339 reference identifies the offered item.\u003c\/p\u003e\u003ch3\u003eIs Q029 the same part?\u003c\/h3\u003e\u003cp\u003eNo. Q029 maps to K23-50099, the separate electrical limit switch. Select the component that the diagnosis identifies.\u003c\/p\u003e\u003ch3\u003eWill it fit every CSW200 operator?\u003c\/h3\u003e\u003cp\u003eDo not assume that. Confirm the installed limit assembly and the service drawing for the exact generation.\u003c\/p\u003e\u003ch3\u003eWill changing the cam cure a damaged switch?\u003c\/h3\u003e\u003cp\u003eNo. Inspect both components and their mounting. Replace the parts actually required, then carry out the prescribed setup and safety tests.\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":"LiftMaster","offers":[{"title":"Default Title","offer_id":60655770239262,"sku":"Q238","price":10000.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/2781\/5710\/files\/q238.jpg?v=1793139884","url":"https:\/\/garage-doorparts.com\/products\/liftmaster-q238","provider":"garage-doorparts.com","version":"1.0","type":"link"}