|Other names||Tire mounter|
|Types||Passenger Car & Light Truck, Motorcycle, Heavy Duty|
|Manufacturer||Teco Automotive Equipment, COATS, Hunter Engineering Company, Snap-on, Accu-turn, Corghi, Puli|
|Model||The above tire changer is the Rim Clamp 5060AX manufactured by COATS.|
|Related||Tires, Alloy wheel, Bead breaker|
A tire changer is a machine used to help tire technicians dismount and mount tires with automobile wheels. After the wheel and tire assembly are removed from the automobile, the tire changer has all the components necessary to remove and replace the tire from the wheel. Different tire changers allow technicians to replace tires on automobiles, motorcycles and heavy-duty trucks. New tire and wheel technology has improved certain tire changers to be able to change a low profile tire or a run-flat tire.
The tire changer has two foot pedals. The left pedal is called the clamp control pedal, a three position pedal that opens and closes the rim clamps.Once pressed, pneumatic pistons move the 4 rim clamps together or apart simultaneously. The right pedal is the table top pedal, which is a three position pedal that controls the rotation of the table top. When the table top pedal is pressed down, the table top spins clockwise. The table top spins counter clockwise when the pedal is raised.
The mount/demount mechanism consists of the duckhead, swing arm, and vertical slide. The duckhead is at the bottom end of the vertical slide. The duckhead is uniquely shaped, like a tapered bill, to fit next and surround the rim of a wheel. It can either be made of metal or plastic. The duckhead mounts and demounts the tire from the wheel.The swing arm moves left and right. The purpose of the swing arm is to move the duck head near or away from the rim. The last component of the mount/demount mechanism is the vertical slide. The vertical slide moves up and down so that the duck head can fit onto the rims of different size wheel widths. The vertical slide has a spring and locking handle above the swing arm to set the duckhead and maintain a stable position around the rim.
The air pressure system on a tire changer provides the air to inflate tires mounted on wheels. The air pressure system consists of 4 components: air hose, air inflation gauge, inflation pedal and manual pressure bleed valve. The air hose is located near the top of the tire changer, and it allows compressed air to travel into the tire. A specialized end is used on the air hose to clamp firmly onto valve stems of the wheels. The air inflation gauge displays the air pressure within the tire when the air hose is connected to the valve stem. The air inflation gauge displays the pressure in pounds per square inch (psi). Directly below the air hose on the side of the tire changer is the inflation pedal that enables the inflation of the tire.When the inflation pedal is raised, a burst of air is released from valves next to each rim clamp toward the bottom bead of the tire to help with inflation. The manual bleed valve is located next to the air hose and air inflation gauge. The manual bleed valve allows the manual release of air pressure from tire.
The table top and rim clamps hold and rotate the wheel to mount or dismount a tire. The table top is directly above the foot pedals and below the mount/demount mechanism. The table top is able to rotate clockwise and counter clockwise. The table top is shaped as the letter "X", but it can be a circle in different tire changer models. On each end of the table top, there are pneumatic–powered rim clamps. These rim clamps move in unison to secure wheels onto the table top.Each rim clamp can be adjusted closer or further away from the center of the table top to accommodate smaller or larger wheels.
The bead loosening system releases the tire bead from the rim of the wheel. The bead loosening system consists of an arm near the bottom right side of the tire changer. There is a shovel shaped metal piece at the end of the arm called the bead loosener shoe. The bead loosener shoe pivots and is rounded to accommodate the shape of a wheel. On top of the arm, there is a handle with a button on top to engage the bead loosening system. Across from the shovel shaped metal piece, there are rubber squares to protect the wheel from scratches during the loosening procedure.
The following list provides an explanation of an operator installing a tire onto a wheel using a tire changer:
Motorcycle tire changers are less sophisticated than passenger car and light truck or heavy-duty tire changers because they deal with smaller and lighter tires and wheels. Motorcycle tire changers mainly provide a simple bead loosening system and rim clamps powered manually. Certain motorcycle tire changers can accommodate wheel diameters as small as 10 inches (250 mm) and wheels at least 1+1⁄2 inches (38 mm) wide. In addition, small atv wheels and tires are used on motorcycle tire changers.
Heavy-duty tire changers require larger equipment because these changers deal with larger, heavier tires and wheels. Heavy-duty tire changers can work with some wheels up to 56 inches (1.4 m) in diameter and tires up to 90.5 inches (2.30 m) in diameter and 43 inches (1.1 m) wide. Heavy-duty tire changers are used for agricultural, off-road and construction vehicles. However, now, bigger versions of the heavy-duty tire changers are designed to mount/demount tires up to 95 inches (2.4 m) in diameter and also feature a hydraulically operated self-centering four-jaw chuck with clamping jaws that can clamp from 14 to 58 inches (0.36 to 1.47 m) either from the wheel’s inside or from the center bore.
Higher volume producers typically utilize specialized tire and wheel mounting and inflation equipment which is partially or fully automated. Depending on the tire size, machines may be a single station or multistation. In these machines, the tire is inflated using high volume, high pressure compressed air that flows into the tire around the tire bead rather than through the valve stem. When the tire has achieved the desired inflation pressure, the machine's inflation head moves away from the tire and the inflation process is completed.
A tire or tyre is a ring-shaped component that surrounds a wheel's rim to transfer a vehicle's load from the axle through the wheel to the ground and to provide traction on the surface over which the wheel travels. Most tires, such as those for automobiles and bicycles, are pneumatically inflated structures, which also provide a flexible cushion that absorbs shock as the tire rolls over rough features on the surface. Tires provide a footprint, called a contact patch, that is designed to match the weight of the vehicle with the bearing strength of the surface that it rolls over by providing a bearing pressure that will not deform the surface excessively.
A mountain bike (MTB) or mountain bicycle is a bicycle designed for off-road cycling. Mountain bikes share some similarities with other bicycles, but incorporate features designed to enhance durability and performance in rough terrain, which makes them heavier, more complex and less efficient on smooth surfaces. These typically include a suspension fork, large knobby tires, more durable wheels, more powerful brakes, straight, extra wide handlebars to improve balance and comfort over rough terrain, and wide-ratio gearing optimised for topography and application. Rear suspension is ubiquitous in heavier-duty bikes and now common even in lighter bikes. Dropper posts can be installed to allow the rider to quickly adjust the seat height.
A bicycle wheel is a wheel, most commonly a wire wheel, designed for a bicycle. A pair is often called a wheelset, especially in the context of ready built "off the shelf" performance-oriented wheels.
A racing bicycle, also known as a road bike is a bicycle designed for competitive road cycling, a sport governed by and according to the rules of the Union Cycliste Internationale (UCI).
The term bicycle tools usually refers to specialty tools only used on bicycles, as opposed to general purpose mechanical tools such as spanners and hex wrenches. Various bicycle tools' have evolved over the years into specialized tools for working on a bicycle. Modern bicycle shops will stock a large number of tools for working on different bicycle parts. This work can be performed by a trained bicycle mechanic, or for simple tasks, by the bicycle owner.
Gear ratios of bicycles are relative measures of bicycle gearing giving an indication of the mechanical advantage of different gears, which combined with the wheel diameter determines how far the bicycle advances per pedal or crank revolution.
ISO 5775 is an international standard for labeling the size of bicycle tires and rims. The system used was originally developed by the European Tyre and Rim Technical Organisation (ETRTO). It is designed to make tire sizing consistent and clear. It replaces overlapping informal systems that ambiguously distinguished between sizes. For example, at least 6 different "26 inch" sizes exist, and "27 inch" wheels have a larger diameter than American "28 inch" wheels. The Japanese Industrial Standards Committee also cooperates with ISO 5775. The corresponding Japanese standards are JIS D 9112 for tires and JIS D 9421 for rims.
Tire bead is the term for the edge of a tire that sits on the rim. Wheels for automobiles, bicycles, etc. are made with a small slot or groove into which the tire bead sits. When the tire is properly inflated, the air pressure within the tire keeps the bead in this groove.
A beadlock or bead lock is a mechanical device that secures the bead of a tire to the wheel of a vehicle. Tires and wheels are designed so that when the tire is inflated, the tire pressure pushes the bead of the tire against the inside of the wheel rim so that the tire stays on the wheel and the two rotate together. In situations where tire pressure is insufficient to hold the bead of the tire in place, a beadlock is needed.
The rim is the "outer edge of a wheel, holding the tire". It makes up the outer circular design of the wheel on which the inside edge of the tire is mounted on vehicles such as automobiles. For example, on a bicycle wheel the rim is a large hoop attached to the outer ends of the spokes of the wheel that holds the tire and tube. In cross-section, the rim is deep in the center and shallow at the outer edges, thus forming a "U" shape that supports the bead of the tire casing.
A tire-pressure monitoring system (TPMS) monitors the air pressure inside the pneumatic tires on vehicles. A TPMS reports real-time tire-pressure information to the driver, using either a gauge, a pictogram display, or a simple low-pressure warning light. TPMS can be divided into two different types – direct (dTPMS) and indirect (iTPMS).
The Suzuki GSX-R750 is a sports motorcycle made by Suzuki since 1984. It was introduced at the Cologne Motorcycle Show in October 1984 as a motorcycle of the GSX-R series for the 1985 model year.
A tubeless tire is a pneumatic tire that does not require a separate inner tube.
A bead breaker is a tool used for separating tires from rims. The innermost diameter of the tire that interfaces with the rim of a wheel is called the tire bead. The bead is a thicker section of rubber, and is reinforced with braided steel cables, called the bead bundle. The surface of the bead creates a seal between the tire and rim on radial and bias-ply tires.
Inspection and maintenance of tires is about inspecting for wear and damage on tires so that adjustments or measures can be made to take better care of the tires so that they last longer, or to detect or predict if repairs or replacement of the tires becomes necessary. Tire maintenance for motor vehicles is based on several factors. The chief reason for tire replacement is friction from moving contact with road surfaces, causing the tread on the outer perimeter of tires to eventually wear away. When the tread depth becomes too shallow, like for example below 3.2 mm, the tire is worn out and should be replaced. The same rims can usually be used throughout the lifetime of the car. Other problems encountered in tire maintenance include:
A bicycle tire is a tire that fits on the wheel of a bicycle or similar vehicle. These tires may also be used on tricycles, wheelchairs, and handcycles, frequently for racing. Bicycle tires provide an important source of suspension, generate the lateral forces necessary for balancing and turning, and generate the longitudinal forces necessary for propulsion and braking. Although the use of a pneumatic tire greatly reduces rolling resistance compared to the use of a rigid wheel or solid tire, the tires are still typically, the second largest source, after wind resistance, of power consumption on a level road. The modern detachable pneumatic bicycle tire contributed to the popularity and eventual dominance of the safety bicycle.
Mountain bike trials, also known as observed trials, is a discipline of mountain biking in which the rider attempts to pass through an obstacle course without setting foot to ground. Derived from motorcycle trials, it originated in Catalonia, Spain as trialsín and is said to have been invented by Pere Pi, the father of Ot Pi, a world champion motorcycle trials rider. Pi's father had wanted his son to learn motorcycle trials by practicing on an ordinary bicycle.
The following outline is provided as an overview of and topical guide to tires: