{"product_id":"hofmann-monty-3850-truck-tire-changer","title":"Hofmann MONTY 3850 Truck Tire Changer","description":"\u003cdiv class=\"divider\"\u003e\u003cimg height=\"8\" width=\"1198\" alt=\"\" src=\"https:\/\/cdn11.bigcommerce.com\/s-ew8kwapfc4\/images\/stencil\/original\/image-manager\/golden-bar.png?t=1681903157\"\u003e\u003c\/div\u003e \u003cdiv class=\"kd-main-product-feature-container\" id=\"kd-main-product-feature-container\"\u003e \u003ch2 class=\"h3 accordion\"\u003eHofmann MONTY 3850 Truck Tire Changer\u003c\/h2\u003e \u003cdiv class=\"panel\"\u003e \u003cdiv class=\"kd-product-feature-continer kd-flex-row-2\"\u003e \u003cdiv class=\"kd-prouduct-feature-item kd-prouduct-feature-content\"\u003e \u003cp\u003eThe Hofmann MONTY 3850 is a truck tire changer built around an \u003cstrong\u003eelectro-hydraulic drive\u003c\/strong\u003e rather than the pneumatic systems used on car-and-light-truck machines. That single design choice is the reason this unit belongs in a commercial truck bay: hydraulic pressure — 160 bar at the chuck — delivers steady, controllable force at low speed instead of the sharp, on-off push of an air cylinder, and low-and-steady is what a 59\" commercial tire needs when its bead is seized onto a steel rim.\u003c\/p\u003e \u003cp\u003eIt is a single-tower assist machine for commercial and agricultural service work: truck, bus, trailer and light earthmover assemblies, handled by one technician working from a control unit that rolls to the wheel rather than a fixed panel the technician has to walk back to.\u003c\/p\u003e \u003ch3\u003eHydraulic drive, and what it changes at the bead\u003c\/h3\u003e \u003cp\u003eA pneumatic tire changer stores energy in compressed air, so its force arrives quickly and is difficult to modulate part-way through a stroke. A hydraulic circuit does not compress; the force you command is the force you get, and it holds there. On the MONTY 3850 that shows up in two places. The bead breaker roll works its way around the rim under continuous pressure rather than in bites, which is what keeps a stiff commercial sidewall from being levered against the flange. And the chuck turns at \u003cstrong\u003e7 rpm\u003c\/strong\u003e — a deliberately slow, high-torque rotation, not a productivity compromise. At that speed the technician can watch the bead move, stop, reposition the tool and start again, which is the difference between a clean demount and a damaged rim on a wheel that may be worth more than the tire on it.\u003c\/p\u003e \u003ch3\u003eAn infinitely self-centring hydraulic chuck\u003c\/h3\u003e \u003cp\u003eThe chuck is universal and self-centring across its whole range, which means it is not stepped into fixed positions — it clamps wherever the centre bore actually is, anywhere in a \u003cstrong\u003e14-26\" (356-660mm)\u003c\/strong\u003e centre-bore range. In practice that covers the great majority of commercial steel and aluminium truck wheels without an adapter change, and it removes the most common source of run-out damage on this class of machine, which is a wheel clamped very slightly off-centre and then rotated under load.\u003c\/p\u003e \u003ch3\u003eThe safety valve on the chuck\u003c\/h3\u003e \u003cp\u003eThis is the feature worth understanding before you compare this machine with anything else. The chuck carries a \u003cstrong\u003esafety valve that prevents accidental unclamping\u003c\/strong\u003e. A truck wheel and tire assembly on a hydraulic chuck is a large mass held by fluid pressure; a lost line, a knocked lever or a mis-keyed control on a machine without that interlock releases it. The valve means the clamp does not open because something upstream failed — it opens because the operator asked it to. On equipment this size that is a personnel-safety feature, not a convenience.\u003c\/p\u003e \u003ch3\u003eMobile control unit and swing-arm tooling\u003c\/h3\u003e \u003cp\u003eThe control unit is mobile and vertically adjustable. The technician positions the controls at a comfortable working height beside the wheel, sees the tool contact point directly, and makes fine adjustments while looking at the work instead of over a shoulder. The bead breaker roll and the mounting\/demounting tool are both carried on the swing arm, so the two operations share one accurately positioned arm rather than needing the wheel to be re-set between them. Positioning of both the wheel and the tool is adjustable across a wide range, which is what lets one operator handle assemblies that would otherwise need a second pair of hands.\u003c\/p\u003e \u003ch3\u003eWill It Fit?\u003c\/h3\u003e \u003cp\u003eThree things to check before ordering.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePower.\u003c\/strong\u003e The MONTY 3850 runs on \u003cstrong\u003e208V, 1Ph, 60Hz\u003c\/strong\u003e. That is single-phase, so it does not require a three-phase service — but 208V single-phase is not a standard wall outlet either, and it is on the customer to have a suitably rated, correctly fused circuit run to the machine's location by a licensed electrician before delivery.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eFloor.\u003c\/strong\u003e The unit weighs \u003cstrong\u003e1,212 lbs.\u003c\/strong\u003e and works loaded truck assemblies, so it wants a sound, level concrete floor. Have your own contractor confirm your slab is adequate for the installed weight plus the wheels you intend to handle.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWorking space.\u003c\/strong\u003e Because the control unit is mobile and the arm swings, plan clear floor around the machine rather than just the footprint of the machine itself — the technician needs to walk the controls around the wheel, and a wheel up to 59\" (1,500mm) in diameter has to be rolled in and out.\u003c\/p\u003e \u003ch3\u003ePerfect For\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e \u003cstrong\u003eCommercial truck and trailer service shops\u003c\/strong\u003e handling steel and aluminium drive, steer and trailer wheels daily.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eFleet maintenance operations\u003c\/strong\u003e — municipal, refuse, utility, agricultural — where wheels come off in-house rather than going to a vendor.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eBus and RV service centres\u003c\/strong\u003e where the assemblies are heavy and the wheels are frequently cosmetic.\u003c\/li\u003e \u003cli\u003e \u003cstrong\u003eTire dealers adding a commercial bay\u003c\/strong\u003e to a passenger-car operation.\u003c\/li\u003e \u003c\/ul\u003e \u003ch3\u003eWhat's in the Box\u003c\/h3\u003e \u003cp\u003eThe machine is supplied with the items its own feature list names: the electro-hydraulic drive unit, the mobile control unit, the self-centring universal hydraulic chuck, and the bead breaker roll and mounting\/demounting tool fitted on the swing arm. Anything beyond that — additional adapters, specialist tooling, consumables — is not listed as included, so ask us before you assume it is in the crate.\u003c\/p\u003e \u003ch3\u003eKey Specifications\u003c\/h3\u003e \u003ctable\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth\u003eClamping centre bore range\u003c\/th\u003e \u003ctd\u003e14-26\" (356-660mm)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eMaximum wheel diameter\u003c\/th\u003e \u003ctd\u003e59\" (1,500mm)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eChuck speed\u003c\/th\u003e \u003ctd\u003e7 rpm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eHydraulic pressure\u003c\/th\u003e \u003ctd\u003e160 bar\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ctable\u003e \u003ctbody\u003e \u003ctr\u003e \u003cth\u003ePower supply\u003c\/th\u003e \u003ctd\u003e208V \/ 1Ph \/ 60Hz\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eMachine weight\u003c\/th\u003e \u003ctd\u003e1,212 lbs.\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eStyle\u003c\/th\u003e \u003ctd\u003eTruck\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003cth\u003eAssist type\u003c\/th\u003e \u003ctd\u003eSingle tower assist\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch3\u003eOne figure we will not pick for you\u003c\/h3\u003e \u003cp\u003eOur two sources for maximum wheel width disagree. The specification table published on this page gives \u003cstrong\u003e27.5\" (698mm)\u003c\/strong\u003e; the product's own spec field gives \u003cstrong\u003e28\"\u003c\/strong\u003e. Half an inch rarely decides a purchase, but if you are buying this machine specifically for a wide-base or super-single wheel that sits near the limit, \u003ca href=\"https:\/\/mechanicsuperstore.com\/pages\/contact\"\u003econtact us\u003c\/a\u003e and we will confirm the figure with Hofmann against your wheel before you order rather than guess at it here.\u003c\/p\u003e \u003ch3\u003eCertification and compliance, honestly\u003c\/h3\u003e \u003cp\u003eThe product data we hold for the MONTY 3850 does not record a third-party safety listing, and we will not imply one it does not claim. A manufacturer's own declaration of conformity is a different document from an independent, third-party listing carried out by an accredited body, and the two are not interchangeable. If your insurer, your fleet policy, a franchise agreement or your local authority having jurisdiction requires a specific listing for shop equipment, establish exactly what they require and ask us to confirm this machine's documentation against it before you buy.\u003c\/p\u003e \u003ch3\u003eShipping and delivery\u003c\/h3\u003e \u003cp\u003eThis is freight equipment, shipped to the lower 48 states. Delivery arrangements for Hofmann machines are set out in the Pick Up and Delivery section further down this page, and they differ from our general freight terms — read that section, and if anything there does not match what you see at checkout, confirm it with us before ordering. Whatever the arrangement, one rule always applies: inspect the shipment before you sign. Walk around the crate, look for punctures, crushed corners, shifted load or damaged banding, and note anything you find on the bill of lading at the time of delivery. A signed clean BOL is your statement that the equipment arrived undamaged, and it is very difficult to unwind afterwards.\u003c\/p\u003e \u003ch3\u003eWarranty\u003c\/h3\u003e \u003cp\u003eWarranty coverage is handled under our published \u003ca href=\"https:\/\/mechanicsuperstore.com\/pages\/warranty-claims\"\u003ewarranty claims\u003c\/a\u003e process; we have not stated a term here because the product data we hold does not specify one, and we would rather send you to the actual policy than quote a length we cannot verify. One practical warning that applies to every hydraulic machine we sell: \u003cstrong\u003edo not disassemble a suspect component before you open a claim.\u003c\/strong\u003e Photograph the fault in place, record the serial number, and contact us first. A unit that has already been opened up is frequently outside the terms of any claim, however genuine the original fault was.\u003c\/p\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"divider\"\u003e\u003cimg height=\"8\" width=\"1198\" alt=\"\" src=\"https:\/\/cdn11.bigcommerce.com\/s-ew8kwapfc4\/images\/stencil\/original\/image-manager\/golden-bar.png?t=1681903157\"\u003e\u003c\/div\u003e \u003cdiv class=\"kd-main-product-details-container\" id=\"kd-main-product-details-container\"\u003e \u003ch3 class=\"h3 accordion\"\u003eProduct Features\u003c\/h3\u003e \u003cdiv class=\"panel\"\u003e \u003cdiv class=\"kd-product-details-continer kd-flex-row\"\u003e \u003cdiv class=\"kd-prouduct-details-item\"\u003e \u003cul\u003e \u003cli\u003e\u003cspan\u003eElectro-hydraulic drive\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan\u003eMobile control unit\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan\u003ePositioning of wheel and tool within a wide accurate adjustment range\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan\u003eInfinitely self-centring universal hydraulic chuck\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan\u003eBead breaker roll and mounting\/demounting tool fitted on swing arm\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan\u003eSafety valve on chuck prevents accidental unclamping of wheels\u003c\/span\u003e\u003c\/li\u003e \u003cli\u003e\u003cspan\u003eErgonomic operation owing to vertically adjustable control unit\u003c\/span\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"divider\"\u003e\u003cimg height=\"8\" width=\"1198\" alt=\"\" src=\"https:\/\/cdn11.bigcommerce.com\/s-ew8kwapfc4\/images\/stencil\/original\/image-manager\/golden-bar.png?t=1681903157\"\u003e\u003c\/div\u003e \u003cdiv class=\"kd-main-product-spec-container\" id=\"kd-main-product-spec-container\"\u003e \u003ch3 class=\"h3 accordion\"\u003eProduct Specifications\u003c\/h3\u003e \u003cdiv class=\"panel\"\u003e \u003cdiv class=\"kd-product-spec-continer kd-flex-row\"\u003e \u003cdiv class=\"kd-prouduct-spec-item\"\u003e \u003ctable cellspacing=\"0\" border=\"0\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd width=\"50%\" align=\"left\"\u003eClamping center bore range inch\u003c\/td\u003e \u003ctd width=\"50%\" align=\"right\"\u003e14-26\" (356-660mm)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd width=\"50%\" align=\"left\"\u003eWheel diameter\u003c\/td\u003e \u003ctd width=\"50%\" align=\"right\"\u003e59\" (1,500mm)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd width=\"50%\" align=\"left\"\u003eWheel width\u003c\/td\u003e \u003ctd width=\"50%\" align=\"right\"\u003e27.5\" (698mm)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd width=\"50%\" align=\"left\"\u003eChuck speed\u003c\/td\u003e \u003ctd width=\"50%\" align=\"right\"\u003e7 rpm\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd width=\"50%\" align=\"left\"\u003eHydraulic Pressure\u003c\/td\u003e \u003ctd width=\"50%\" align=\"right\"\u003e160 bar\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd width=\"50%\" align=\"left\"\u003ePower Supply\u003c\/td\u003e \u003ctd width=\"50%\" align=\"right\"\u003e208V \/ 1Ph \/ 60Hz \/ 25A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd width=\"50%\" align=\"left\"\u003eWeight\u003c\/td\u003e \u003ctd width=\"50%\" align=\"right\"\u003e1,212 lbs.\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003c\/div\u003e \u003cdiv class=\"kd-prouduct-spec-item\"\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"divider\"\u003e\u003cimg height=\"8\" width=\"1198\" alt=\"\" src=\"https:\/\/cdn11.bigcommerce.com\/s-ew8kwapfc4\/images\/stencil\/original\/image-manager\/golden-bar.png?t=1681903157\"\u003e\u003c\/div\u003e \u003cdiv class=\"kd-main-product-pickupdelivry-container\" id=\"kd-main-product-pickupdelivry-container\"\u003e \u003ch3 class=\"h3 accordion\"\u003ePick Up and Delivery\u003c\/h3\u003e \u003cdiv class=\"panel\"\u003e \u003cdiv class=\"kd-product-pickupdelivry-continer kd-flex-row\"\u003e \u003cdiv class=\"kd-prouduct-pickupdelivry-item\"\u003e \u003cp\u003eAll Hofmann machines come with free delivery, setup, and instruction.\u003cbr\u003e\u003cbr\u003eCall, text, or chat with us if you have questions. - 866-774-7743\u003c\/p\u003e \u003c\/div\u003e \u003cdiv class=\"kd-prouduct-pickupdelivry-item\"\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003cdiv class=\"divider\"\u003e\u003cimg height=\"8\" width=\"1198\" alt=\"\" src=\"https:\/\/cdn11.bigcommerce.com\/s-ew8kwapfc4\/images\/stencil\/original\/image-manager\/golden-bar.png?t=1681903157\"\u003e\u003c\/div\u003e \u003cdiv class=\"kd-main-product-downloads-container\" id=\"kd-main-product-downloads-container\"\u003e \u003cdiv class=\"panel\"\u003e \u003cdiv class=\"kd-product-downloads-continer kd-flex-row\"\u003e \u003cdiv class=\"kd-prouduct-downloads-item\"\u003e\u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e \u003c\/div\u003e","brand":"Hofmann USA","offers":[{"title":"Default Title","offer_id":49287140049050,"sku":"MONTY3850","price":11494.9,"currency_code":"PKR","in_stock":true}],"url":"https:\/\/coretarps.co.uk\/products\/hofmann-monty-3850-truck-tire-changer","provider":"My Store","version":"1.0","type":"link"}