The paper describes and analyses the video recordings of the experiment for changing the shape of the α-PdH_n alloy cantilever in the temperature range from 110°C to 350°C during degassing of the hydrogen installation chamber and the cantilever, when the hydrogen pressure is of 0.03 MPa, 0.09 MPa, 0.15 MPa. The cantilever is covered on one side with a copper film with a thickness of 0.75 μm, which does not allow hydrogen to pass through and does not affect the size of the shape change. Saturation of the palladium cantilever to the α-PdH_n alloy is carried out in a chamber at a constant temperature of the experiment. Next, the obtained alloy is kept in isothermal conditions, after which one-sided degassing of the cantilever is carried out. For the first time, it is experimentally recorded that, during degassing and changing the pressure by ΔP_H2 = 0.03, 0.9, 0.15 MPa, the value of the maximum bends for the cantilever increases and reaches its maximum value in the temperature range of 220−280°C. As established, during degassing of hydrogen from a chamber for a cantilever made of α-PdH_n alloys, the bending develops at two different time stages. The first stage lasts for a very short time (9−30 seconds) and is characterized by the rapid achievement of the maximum bending of the cantilever. The second stage lasts much longer (more than 100 seconds) and is characterized by the formation of a plateau lasting from 3 to 30 seconds and the reverse straightening of the cantilever. During the second stage, the cantilever returns to its initial state or reaches a stationary state with minimal deviation from the initial position. As also recorded, the degree of reversibility of cantilever bending during degassing increases with increasing hydrogen concentration within the α-PdH_n alloy. As determined, the internal hydrogen concentration stresses, which occur during hydrogen degassing from α-PdH_n alloys, in some cases exceed the elastic characteristics of the α-PdH_n alloy (200 MPa) and are in the range from 62 to 370 MPa. The process of forming the maximum bending of the cantilever during the degassing process for α-PdH_n alloys is due to the diffusion transport of hydrogen, the redistribution of internal stresses in the cantilever during its bending (straightening), and the corresponding restructuring of the hydrogen concentration field, which changes the internal conditions for the diffusion transport of hydrogen into the layers of the α-PdH_n alloy.