A loader for a work vehicle includes a loader arm, a mast section rotatably connected to the loader arm, an implement removably attached to the loader arm, a first actuator connected between the loader arm and the mast, a second actuator connected between the loader arm and the implement, and a first roller apparatus having a use position and a storage position. The first roller apparatus is positioned nearer a ground surface in the use position than in the storage position. The first roller apparatus is in contact with the ground surface in the use position and spaced apart from the ground surface in the storage position.

A stand of a front loader includes: a main body that is disposed on a boom and swings between a supporting position in which the main body supports a front loader and a storage position in which the main body is stored; a grounding-member swing shaft that is disposed on the main body and engages with the boom to hold the main body in the storage position; a swinging member swingably disposed on the boom; and an engagement lever disposed on the swinging member, wherein the main body has a guiding hole that guides the engagement lever to regulate a swinging range of the main body.

An automatically actuated shunt valve system opens and closes a passage between two chambers of a powered element operated by a power source. The shunt valve system includes a coupler connecting the powered element with the power source through two mating coupling elements. One of the coupling elements includes a valve contact and the other includes a shunt valve assembly. The shunt valve assembly includes a valve chamber connected with both chambers of the powered element, a valve element opening or closing a flow path between the conduits, and a shaft for moving the valve element. The shaft engages the valve contact to move the valve element to close the flow path when the coupling elements are mated together, and moves the valve element to open the flow path when the shaft disengages from the valve contact as the coupling elements are disconnected from one another.

A link operating mechanism is provided spanning a bucket and a stand. The link operating mechanism causes, using a swing force of the bucket, a bending/stretching link to bend so that propping and supporting of the bending/stretching link are released.

A stand 18 is maintained under a stored posture when the stand 18 is pivoted toward the stored posture side in association with a dumping actin of a bucket 13 and a lock mechanism 25 is switched to a locking state. The stand is switched to an in-use posture when the lock mechanism 25 is switched to a releasing state while the stand 18 is maintained under the stored posture by the lock mechanism 25.

A link operating mechanism is provided spanning a bucket and a stand. The link operating mechanism causes, using a swing force of the bucket, a bending or stretching link to bend so that propping and supporting of the bending or stretching link are released.

A loader attachment system is configured so as to detachably attach a loader to a vehicle by detachably attaching a mast of the loader to a loader mount fixed on the vehicle. The loader attachment system includes a support device, a location device, and an engagement device. The support device is configured to support the mast on the loader mount so that the mast is rotatable relative to the loader mount. The location device is configured to locate the mast supported on the loader mount by the support device at an attachment position. The engagement device is configured to engage the mast at the attachment position with the loader mount so as to prevent the mast from rotating in a direction to detach the mast from the loader mount. The support device, the location device and the engagement device are configured independent of one another.

A front loader includes a boom, a first pivotal shaft disposed on a tip portion of the boom, a bucket supported by the first pivotal shaft to be capable of performing a shoveling movement and a dumping movement, a boom cylinder to swing the boom, a bucket cylinder to move the bucket to make the bucket perform the shoveling movement and the dumping movement, a control valve to be switched to any one of a first state supplying an operation fluid to the bucket cylinder and a second state stopping supplying the operation fluid to the bucket cylinder, a first movable member to turn around the first pivotal shaft in accordance with the movement of the bucket, and a wire connecting the first movable member to the control valve.

A link operating mechanism is provided spanning a bucket and a stand. The link operating mechanism causes, using a swing force of the bucket, a bending or stretching link to bend so that propping and supporting of the bending or stretching link are released.

A link operating mechanism is provided spanning a bucket and a stand. The link operating mechanism is configured to cause, using a swing force of the bucket, a bending/stretching link to bend so that propping and supporting of the bending/stretching link are released.