Patent ID: 8490477

Claim:
A testing device for a torque converter, the torque converter including a rotatable turbine portion which has a splined portion on an inner circumferential periphery thereof, and a stator portion which is fixedly supported in a concentrical relation to the turbine portion and has a splined portion on an inner circumferential periphery thereof, the testing device comprising: a turbine shaft rotatably supported on a first support portion, the turbine shaft having a splined portion on an outer circumferential periphery thereof which is engaged with the splined portion of the turbine portion of the torque converter when the turbine shaft is moved downwardly in an axial direction thereof, the turbine shaft having an oil passage for a torque converter oil which extends through a central portion of the turbine shaft, a stator shaft disposed concentrically with the turbine shaft with a clearance between the stator shaft and the turbine shaft, the stator shaft on an outer circumferential side of the turbine shaft being supported on a second support portion to be axially moveable and non-rotatable with respect to the second support portion, the stator shaft having a splined portion on an outer circumferential periphery thereof which is engaged with the splined portion of the stator portion of the torque converter when the stator shaft is moved downwardly in an axial direction thereof, and a spring which biases the stator shaft toward the torque converter, wherein the testing device is constructed such that when the torque converter oil is supplied to the testing device, the torque converter oil is filled in a space in which the spring is accommodated through the clearance between the stator shaft and the turbine shaft, the space in which the spring is accommodated being formed in the second support portion, and wherein the stator shaft is urged toward the stator portion of the torque converter by a pressing force of the spring and an oil pressure of the torque converter oil which is filled in the space in which the spring is accommodated through the clearance between the stator shaft and the turbine shaft.