Abstract: A puller tool and method for pulling a component from another component are provided. The puller tool can include a cross bar, a pair of puller legs that are movable along the length of the cross bar and a forcing screw. The puller legs can be quickly positioned anywhere along the length of the cross bar through a quick release mechanism. The cross bar can include notches on its outer surface to ensure that the puller legs are equidistant from each other during use.

Abstract: An auto-aligning linear motion apparatus is provided. The apparatus includes a leadscrew. The apparatus also includes a nut arrangement configured to surround the leadscrew, wherein the nut arrangement includes at least a nut, a nut bracket, and a floating collar. A shoulder screw is inserted through a nut bracket slot of the nut bracket and a nut slot of the nut to rest at least partially within the floating collar. One dimension of the nut bracket slot is larger than a dimension through a cross-section area of the shoulder screw to enable the shoulder screw to move within the nut bracket slot to adjust the nut arrangement as the leadscrew is rotated to maintain a concentric relationship between the nut arrangement and the leadscrew.

Abstract: An assembling device for assembling an actuator and a lens module. The actuator includes a first top surface for supporting the lens module and a first bottom surface. The lens module includes a top portion for receiving lens and a bottom portion. The diameter of bottom portion is slightly larger than the top portion. The bottom portion further includes a second first bottom surface in contact with the first top surface. The assembling device includes a base, a support set, and a pressing sheet. The base includes a supporting surface for supporting the first bottom surface. The support set is above the base and defines at least three threaded holes therethrough. The pressing sheet is in contact with the second top surface. The at least three pins are movably threaded with the threaded holes correspondingly and configured for pushing the pressing sheet.

Abstract: A pulling tool includes a elongated main support body having a plurality of retention holes formed on opposite sides thereof. An actuator stem member is threadably mounted in the support body. A pair of jaw members is slidably mounted on opposite side of the support body. The jaw members have extended hook portions adapted to engage an outer periphery of a wheel element removably mounted on a stationary wheel mounting member. A pair of tubular holders is slidably mounted on opposite sides of the support body, and retained against outer faces of the jaw members to prevent lateral outward movement of the jaw members on the support body and to orient the jaw members substantially perpendicularly to the support body.

Abstract: A puller includes a main body provided with a plurality of support seats, a plurality of clamping members each pivotally and detachably mounted on a respective one of the support seats, a top cover mounted on the main body and provided with a plurality of pressing pieces each pressing a respective one of the clamping members, and a threaded rod extending through the top cover and the main body. Thus, each of the clamping members is pivotable relative to the respective support seat of the main body so as to adjust the inclined angle of each of the clamping members relative to the respective support seat. In addition, each of the clamping members is locked onto and unlocked from the respective support seat easily and quickly.

Abstract: A pulley removal system used to remove a pulley attached to an internal combustion engine includes a plurality of puller jaw members adapted to be detachably and radially connected to a hub member. Each jaw member comprises an elongated body having a top surface, an underside surface, and first and second opposed ends. The first end is adapted to be attached to the hub member, and the second end has hooked tip free to grasp a flange of a pulley. The hooked tip has a terminal edge with predetermined dimensions that enable it to fit within different sized recesses in the flange of the different pulleys and an underside arcuate surface extending from the terminal edge and merging with the underside surface to form a bite that receives the flange when the terminal end fits within the recess in the flange.

Abstract: A bearing puller for holding and disassembling a bearing which is tightly engaged with a machine part includes a fixing portion, a disassembling portion, a binding ring, and a sleeve, wherein the fixing portion has the binding ring sleeved on one end thereof. The sleeve is screwed on the fixing portion to compress the binding ring to reduce an inner diameter thereof, so as to grab and hold the bearing. Furthermore, the disassembling portion which is mounted on the fixing portion can have a displacement relative to the fixing portion to reject against the machine part or can hit the fixing portion to produce a momentum, thereby causing a relative movement between the machine part and the bearing to disassemble the bearing. Therefore, the bearing can be disassembled rapidly without damage, and thus, the reusing possibility of the bearing also can be increased for saving the cost.

Abstract: According to an embodiment of the present disclosure, a fastener removal device for removing a fastener from an apparatus includes a support structure and an extractor assembly movably associated with the support structure. The extractor assembly may include a collet configured to grip the fastener. The device further includes a turning mechanism associated with the extractor assembly. The turning mechanism is configured to rotate the extractor assembly with respect to the support structure.

Abstract: A puller driving structure is connected to a fixing module and a propping module for installing or removing a bearing, and the structure connects a hydraulic driving device with a connecting module, and the connecting module is connected to a plurality of slide rods and a plurality of resilient elements of a position resuming module, such that an actuating element is actuated on each slide rod, and the hydraulic driving device presses and moves the actuating element, and each resilient element presses and props the actuating element in an opposite direction to resume its original position, so as to achieve a better balance during the use of the puller driving structure provides a better concentricity for the bearing and the spindle.

Abstract: A tool assembly for removing an article from, or inserting an article onto, a printed circuit board which includes a tool housing having a handle portion and an article receiving portion, a plate slidable within the housing, the plate having a handle portion at a first end adjacent to the handle portion of the housing and two receiving portions at a second end, and two lever arms within the housing, each lever arm having a first end pinned to the housing and a second end of each lever arm inserted into the receiving portion of the plate such that each of the lever arms pivots about the pinned first end upon movement of the plate. The tool further comprises a pair of flexible rods located in respective recessed channels on either side of the article receiving portion, with one end of the flexible rods affixed to a first end of each of the lever arms, each of the flexible rods having a free end for interacting with an article retention device.

Abstract: A pulling tool includes a elongated main support body having a plurality of retention holes formed on opposite sides thereof. An actuator stem member is threadably mounted in the support body. A pair of jaw members is slidably mounted on opposite side of the support body. The jaw members have extended hook portions adapted to engage an outer periphery of a wheel element removably mounted on a stationary wheel mounting member. A pair of tubular holders is slidably mounted on opposite sides of the support body, and retained against outer faces of the jaw members to prevent lateral outward movement of the jaw members on the support body and to orient the jaw members substantially perpendicularly to the support body.

Abstract: An apparatus and method enhances installation of a waste disposer mounting assembly at a drain-received sink flange. The apparatus comprises a carriage guide, a carriage assembly, and a spring-actuable notch stop. The carriage guide comprises a hooked end, a handled end, and a notched face extending intermediate the hooked and handled ends. The carriage assembly is translatably and cooperably associated with the carriage guide and comprises a centralized rail guide aperture and a plurality of fastener-engaging arm assemblies. The guide aperture is sized and shaped to receive the guide rail and the notch stop engages the notched face for selectively prevent translation of the carriage assembly relative to the carriage guide. The arm assemblies of the carriage assembly carry a mounting assembly via fastener-port engagement to a mount position where a snap ring fastener may be manually installed to prevent downward displacement of the mounting assembly from the mount position.

Abstract: The invention relates to a device for installing and removing a bearing assembly (3) which consists of a chock in which a trunnion hearing is arranged on a supporting roller stud (1) of a rolling stand. The aim of said invention is to replace said assembly by means of an operationally reliable device without carrying out modifications or large-scale modifications of the supporting roller stud (1), in particular to obtain reproducible mounting forces in order to ensure best long-term wear-less service possible, best possible rotation and easily controlled stripping forces for reliable operation of the rolling stand. The invention also relates to a nut (8) fixed to the roller stud (1) prestressed against the bearing assembly (3). According to said invention, a stripping device (11) can be temporarily coupled to the bearing assembly (3), the hydraulic cylinder (15) thereof resting against the roller stud (1).

Abstract: A method and an assembly for fastening at least one screw nut to be tightened of a rotor blade bearing of a wind turbine are provided. A screw nut driver assembly is provided at a rotatable portion of the rotor blade bearing, the screw nut driver assembly being adapted to automatically tighten the at least one screw nut. The screw nut driver assembly is aligned with the screw nut to be tightened by rotating the rotatable portion with a pitch drive of the wind turbine. Then the screw nut is tightened using the screw nut driver assembly.

Abstract: A tool removes from, or inserts into, an arm of a wheel mounting for an automotive vehicle a bushing. The tool includes a press member configured to grip the arm while overlying the location in the arm for the bushing. A screw element passes through a portion of the press member and engages a pressing cup with an outer rim that abuts an end of the bushing as the screw is manually rotated. The press member, screw element, and pressing cup upon being aligned and assembled with the press member gripping the arm and the rim of the pressing cup bearing against the end of the bushing, the screw element is rotated to apply a force to the end of the bushing as the screw element advances in the direction of the arm.

Abstract: A system and method for extracting seized components is disclosed. The method further grasping a seized component with a gripping mechanism and securing the gripping mechanism to the seized component by turning a camlock mechanism. A force is applied to a power transfer mechanism that moves a threaded axis that is threaded through the power transfer mechanism. The method additionally includes attaching the threaded axis to the gripping mechanism, which extracts the seized component. To facilitate extraction, the method also includes generating vibrations by a vibration mechanism, which may include a vibration mechanism rotating a rotary plate about a shaft. The method may also include generating vibrations by a cam attached to the rotary plate contacting one or more spring-loaded hammers. The spring-loaded hammers may be capable of impacting a strike plate, generating vibrations.

Abstract: Load-balancing and bearing removal devices useful in removing bearings, such as rolling element bearings, for rotating machine maintenance and replacement. Insulation assemblies useful with bearing assemblies that fit in openings in bearing brackets of rotating machines, such as large synchronous motors or generators.

Abstract: A puller includes a main body provided with a plurality of support seats, a plurality of clamping members each pivotally and detachably mounted on a respective one of the support seats, a top cover mounted on the main body and provided with a plurality of pressing pieces each pressing a respective one of the clamping members, and a threaded rod extending through the top cover and the main body. Thus, each of the clamping members is pivotable relative to the respective support seat of the main body so as to adjust the inclined angle of each of the clamping members relative to the respective support seat. In addition, each of the clamping members is locked onto and unlocked from the respective support seat easily and quickly.

Abstract: A method and apparatus is provided for removing a centrifugal compressor diffuser case from a turbofan gas turbine engine case which may be used while the engine is installed on an aircraft or when the engine has been removed from the aircraft. The tool includes movable gripping members at least one force member for exerting a pushing action on the engine structure on which the diffuser case is mounted the method includes gripping a peripheral portion of the diffuser case and applying an axial pushing force on the case relative to the engine case to thereby overcome an interference fit between the diffuser case and the engine case.

Abstract: A forced puller includes a central seat having a threaded hole centrally defined therein and extending therethrough. The central seat has two opposite sides each having a rod perpendicularly extending therefrom relative to an axis of the threaded hole. Two hook members are respectively slidably mounted to a corresponding one of the two rods. Each hook member is formed with a hook engaged to a workpiece that is purposed to be detached. A main threaded rod is screwed through the threaded hole in the central seat. The main threaded rod has a polygonal head formed on a first end thereof for user to forcefully rotate the main threaded rod and a push portion is formed on a second end of the main threaded rod to securely and longitudinally abut against the workpiece after rotating the main threaded rod.

Abstract: The invention disclosed includes a gear puller system in which a vibrating means is used to loosen the target gear in a machine making it easier to remove or pull the gear from a housing, such as a hub. In one embodiment, the vibrator transmits vibrations along the shaft of the gear puller. In second vibration, the vibrating means transmits vibrations through the machine to the gear puller.

Abstract: A clamping apparatus of a puller includes a first clamping element, two second clamping elements, four pivoting elements and three adjusting rod modules. Each pivoting element is pivotally coupled to both ends of the first clamping element and an end of each second clamping element corresponding to the first clamping element. Another end of each second clamping element has a transverse penetrating hole. One of the adjusting rod modules is passed through a penetrating hole of each second clamping element, and the other two adjusting rod modules are passed through the penetrating hole of each pivoting element, so that the adjusting rod modules are arranged substantially in a triangular shape. The pivoting element is installed between the clamping elements for pivotally turning each adjusting rod module and automatically guiding to the central position and increasing the range between the clamping elements for mounting and installing a bearing easily.

Abstract: A memory metal or Nitinol plug is inserted into a tube and heated to cause the plug to expand as it transforms from a martensitic state to an austenitic state. The plug is held by a tool connected to an electric conductor. The tube is then grounded and current is run through the holder, the plug, and, in turn, the tube. Electrical resistance causes the plug to heat up and revert to the austenitic state. The holder is preferably a tube with an internal collet, spring urged into a closed position adapted to grasp a post of the Nitinol plug. To separate the holder from the plug, the collet is pulled to an expanded position by pulling the holder from the tube. This allows the collet to open and separate from the plug.

Abstract: The invention disclosed includes a gear puller system in which a vibrating means is used to loosen the target gear in a machine making it easier to remove or pull the gear from a housing, such as a hub. In one embodiment, the vibrator transmits vibrations along the shaft of the gear puller. In second vibration, the vibrating means transmits vibrations through the machine to the gear puller.

Abstract: An extractor tool used to remove the quill shaft unique to the General Electric T-700 series turboshaft engine when used as the powerplant for the AH-64A & D model Apache Helicopters. The extractor incorporates an alignment housing coupled with an extractor unit. The alignment unit consists of a top plate with alignment holes for the 2 pullers as well as a bottom plate that has mounting holes unique to the T-700 turboshaft engine with both plates held together by spacer sleeves. The extractor unit incorporates a threaded shaft with a machined point that is threaded through a crossbar. The crossbar holds 2 individual jaws that slide onto the crossbar and are used to grasp and remove the quill shaft when the quill shaft is mounted in the T-700 Series engine and installed for use as the primary powerplant in the AH-64A & D model Apache Helicopters.

Abstract: Apparatus and methods for removing a gear from a shaft. In one embodiment, the invention includes a slotted gear puller which engages the web of a gear and can be used to pull the gear from the shaft based on engagement of the gear puller with the gear in the area of the web of the gear.

Abstract: A pulley removal system used to remove a pulley attached to an internal combustion engine includes a plurality of puller jaw members adapted to be detachably and radially connected to a hub member. Each jaw member comprises an elongated body having a top surface, an underside surface, and first and second opposed ends. The first end is adapted to be attached to the hub member, and the second end has hooked tip free to grasp a flange of a pulley. The hooked tip has a terminal edge with predetermined dimensions that enable it to fit within different sized recesses in the flange of the different pulleys and an underside arcuate surface extending from the terminal edge and merging with the underside surface to form a bite that receives the flange when the terminal end fits within the recess in the flange.

Abstract: A compact removal feature comprises a plurality of recesses, such as radius slots, on an inner diameter (ID) of a bearing inner ring. The removal tool can engage the removal feature and remove the entire bearing assembly without damage to the parts. The placement of the removal feature on the bearing inner ring ID allows for a reduction in inner ring length (and weight) while maintaining bearing assembly integrity.

Abstract: To extract a bushing from a housing, a number of cylindrical engaging elements are inserted in the bore of the bushing. The elements are clipped together by clips and have a lip which bears on the bushing end surface. An extractor head pushes on the elements to force the bushing from the housing.

Abstract: A gear puller has a screw shaft, a connecting seat, multiple paws and a fixed element. The screw shaft is attached to a shaft and has a hexagonal head and a tip. The connecting seat is connected rotatably to the screw shaft and has a body, a threaded stub and multiple arms. Each arm is formed on the body and has two hangers and a gap. The paws are pivotally mounted on the arms of the connecting seat and each has a pivotal axle and a hook. The pivotal axle is pivotally connected to the hangers on a corresponding arm, and the hook is formed on the action end to contact a circular element. The fixed element is mounted on the connecting seat and has a fixed board, a spring and a nut. The spring is mounted between the fixed board and the screw nut.

Abstract: A novel apparatus and method to engage a liner in an cylinder of an engine is provided. A wedge and rod are utilized as part of a liner remover assembly to move at least one collet axially to engage the liner. In a preferred embodiment, a novel eyehook is provided at an end of the rod to assist in the pulling of the liner from the cylinder.

Abstract: The invention relates to an improved propellor puller device for pulling a propellor hub from a marine engine. The propellor puller has a hub base member that has a central axis and a multiplicity of puller arms extending radially from the central axis. A threaded bolt threadably engages the hub base member so that rotation of the bolt is translated into axial displacement of the hub base member. Tension members composed of a series of chain links are slidably carried by a respective puller arm and attachable by a hook to a propellor blade. As tension in the tension members increases, the tension members will slide radially inwardly towards the central axis.

Abstract: A liner remover and installer assembly for a cylinder that includes a base having an opening to receive a rod with a tool at an end, an adjustment member and a support member. The support member can have an alignment feature adapted to mate with a dowel pin on an engine block. The tool can be a liner installer or remover. The liner remover can have a shoe with a lip. The support member and the lip can be made from a material that will not score the engine such as aluminum.

Abstract: A steering column pivot pin removal tool includes a bridge support with a jack nut having a cap screw threaded therethrough for engagement with a pivot pin of a steering assembly. The jack nut is held in place by an O-ring. Reverse rotation of the jack nut effects withdrawal of the pivot pin engaged by the cap screw.

Abstract: A device (1) is provided for pressing out a component pressed into a bearing bore of a bearing eye of an axle component. The device includes a support bell (2) being supported at the bearing eye in the area around the bearing bore and a pressure piece (20), which can be pushed axially through the bearing bore together with the component. The pressing device can be operatively positioned or mounted to the support bell (2) and to the pressure piece (20) for the pressing-out operation. To make it possible to carry out the pressing-out operation simply and reliably, provisions are made for arranging a clamping plate (12), which can be detachably connected to the support bell (2) and via which the support bell (2) is held at the bearing eye (24) in a firmly seated manner, at the bearing eye (12) axially opposite the support bell (2).

Abstract: To extract a bushing from a housing, a number of cylindrical engaging elements are inserted in the bore of the bushing. The elements are clipped together by clips and have a lip which bears on the bushing end surface. An extractor head pushes on the elements to force the bushing from the housing.

Abstract: A pulling tool (1) of the type used on the end of a shaft (2) to remove a mechanical part (3) that is force-fitted or stuck to the shaft (2). The tool includes a threaded rod (20) and a body (5) to which legs (6) are hinged. A sleeve is designed to be mounted on the threaded rod (20) and to form a bearing member for a member (27) which inhibits rotation of the legs (6) during screwing of the threaded rod. Thus, the sleeve acts as a member for protecting the threaded rod (20) from the rotation-inhibiting member (27).

Abstract: A tool for removal of a pulley from a shaft includes articulated arms mounted on a hub with a thrust bolt provided to drive the hub and attached arms outwardly from a shaft on which the pulley is mounted. The arms comprise jaw members which in combination with wedge members ensure maintenance of the jaw members in mechanical contact with the pulley to thereby effect its removal from a shaft.

Abstract: An improved puller apparatus for pulling various articles, including automotive pitman arms, includes a puller frame having a base and at least one upstanding arm extending therefrom, the arms having inwardly extending gripping projections for transmitting pulling force to the article being pulled, the base having an aperture extending therethrough for receiving pushing means, which pushing means include an actuation means disposed at a portion of the pushing means proximal to the article being pulled, such that a user may engage the actuation means at a position within the puller frame to axially move the pushing rod against a relatively stationary interiorly disposed object around which the article to be removed is mounted. The pushing force applied against the interiorly disposed object creates a corresponding reaction force in a direction opposite the pushing force, which reaction force is transmitted to the article being removed via the gripping projections on the puller frame.

Abstract: A puller tool for separating a security pin from a mated female part comprises an outer sleeve having an axially extending passage, a radial detent shoulder about the passage at one end of the sleeve, an actuating bolt including a threaded shank axially insertable into the passage and an enlarged head that engages the detent shoulder to prevent further insertion of the actuating bolt into the passage, and a puller member insertable into the passage from an opposite end of the sleeve. The puller member is axially slidable relative to the outer sleeve by rotation of the actuating bolt which mates with a threaded hole in the puller member, and is prevented from rotating relative to the outer sleeve during travel relative to the sleeve. The puller member includes a cavity extending axially and radially through an end thereof to receive the security pin head or female part.

Abstract: A piston pulling apparatus constructed like a mandrel; having top and bottom ends and a cylindric periphery body defined by an array of piston bowl gripping segments having tops and bottoms and lying longitudinally between the top and bottom ends. The top end and the proximate tops of segments are held to each other with a fixed radius and circumference. The bottom end and its proximate array of bottoms are coupled to enable the radial expansion of the array from its bottoms. A threaded shaft lies axially within the body and is coupled to the bottom end to move it vertically upward axially, to displace the segment array bottoms radially, to increase the effective circumference of this apparatus near its bottom end; which, during the expansion, can be positioned to grip the inner sides of a piston bowl.

Abstract: This invention relates to an improved impeller puller where a first jaw is arranged proximate a first end of an elongate support frame and a second jaw, is movably mounted along the support frame spaced from the first jaw, with both jaws extending radially outwardly from the support frame in general alignment with each other, and an extraction screw member is slidably mounted along the support member so as to be variably extended in general radial alignment with the first and second jaw members, the extraction screw member being arranged to engage a shaft so as to extract the impeller from its mounting shaft.

Abstract: A special purpose tool for manual installation and removal of bushings or sleeve bearings from press fit bearing housings within automotive engines, transmissions, and other machinery with no resultant damage to the housing is disclosed. The present tool is comprised of a cylindrical body member including a pilot diameter, which aligns the tool in coaxial relation to the bushing and a bushing locating journal that engages the bushing to be removed. A plurality of machine screws are disposed in the body member at predetermined radial positions. To remove a bushing the machine screws are advanced axially within threaded holes such that the machine screw threads tap into and capture the worn bushing and/or bearing sleeve and the tool is withdrawn. The present tool is also utilized to manually install new bushings into housings and other components by removal of the aforementioned machine screws.

Abstract: The hand tool for extracting bolts is a specialized marine oriented bolt extractor for use in extracting what are commonly called “Body Bound Bolts” from motor vessel shaft couplings. The body of the bolt extractor would be made of heavy duty steel and comprises a stationary flange and a moving flange. Located on the front side of the stationary flange are two cylindrical bolt housings for the bound bolts and two cylindrical extractor rod housings. The extractor rod housings pass through both flanges and house the 180 degree hook shaped extractor rods. One end of the extractor rods is secured to the moving flange with a washer and a nut, and the other end is placed against the bound bolts. A jack bolt passes through the moving flange such that the end of it is placed against the stationary flange. As the jack bolt is tightened, the moving flange moves away from the stationary flange and the extractor rods apply pressure to the bound bolts. This process is continued until the bolts are freed.

Abstract: A tool for inserting a plump plunger through a packing in a fluid end of a plunger pump enables easy and rapid insertion of the plunger through the packing without damaging the packing or the pump plunger.

Abstract: This invention relates to an improved impeller puller where a first jaw is arranged proximate a first end of an elongate support frame and a second jaw, is movably mounted along the support frame spaced from the first jaw, with both jaws extending radially outwardly from the support frame in general alignment with each other, and an extraction screw member is slidably mounted along the support member so as to be variably extended in general radial alignment with the first and second jaw members, the extraction screw member being arranged to engage a shaft so as to extract the impeller from its mounting shaft.

Abstract: An apparatus for the repair or maintenance of a vehicle is provided which facilitates the removal of a wheel, wheel rim, brake rotor, brake drum or the like, when these become seized or fused onto the wheel hub of the vehicle. The wheel pulling apparatus provides a pull plate to pull on, for example, a brake drum, and a push plate which acts to directly or indirectly push on the wheel studs of the vehicle. A simple, easy to use wheel pulling apparatus is provided.

Abstract: A template for the precision drilling of an access hole in a the door of a safety deposit box is disclosed. The access hole in the box door permits a locksmith to pick the dual cylinder lock for which the key has been lost. In one of the preferred embodiments of this invention, the template includes a planar component or element comprises an inflexible, rectangular plate (e.g. metal or structural plastic), generally smaller than the dimension of the safety deposit box door. This plate includes at least one and preferable multiple registration means for alignment of a drill bit guide in relation to the box locking mechanism that is mounted on the interior surface of the safety deposit box door.

Abstract: The device (1) for replacing toothed belt pulleys (61) on motor vehicle engines (65) includes a pull-off disk (2), which is provided with at least two tie rods (7, 8, 9, 10). To pull off the toothed belt pulley (61), the tie rods (7, 8, 9, 10) can be engaged with at least two openings (57, 58, 59, 60) of the toothed belt pulley (61) in an axially firmly seated manner. The pull-off disk (2) is provided with a central threaded hole, into which a spindle drive, by which the toothed belt pulley (61) can be pulled off from its seating via of the pull-off disk (2) engaging the toothed belt pulley (61), can be inserted. To simplify handling as much as possible, a wrench can be attached to the fastening screw connection (66) of the toothed belt pulley (61) through the threaded hole.

Abstract: The device (1) for replacing toothed belt pulleys (61) on motor vehicle engines (65) includes a pull-off disk (2), which is provided with at least two tie rods (7, 8, 9, 10). To pull off the toothed belt pulley (61), the tie rods (7, 8, 9, 10) can be engaged with at least two openings (57, 58, 59, 60) of the toothed belt pulley (61) in an axially firmly seated manner. The pull-off disk (2) is provided with a central threaded hole, into which a spindle drive, by which the toothed belt pulley (61) can be pulled off from its seating via of the pull-off disk (2) engaging the toothed belt pulley (61), can be inserted. To simplify handling as much as possible, a wrench can be attached to the fastening screw connection (66) of the toothed belt pulley (61) through the threaded hole.