HYDRAULIC CLUTCH RELEASE DEVICE

PROBLEM TO BE SOLVED: To provide a hydraulic clutch release device, in which a seal can be prevented from being damaged due to an oil path.SOLUTION: The hydraulic clutch release device includes: an inside housing 1; an outside housing 2; a cylinder chamber 4 formed between the inside housing 1 and the outside housing 2; the oil path formed in the outside housing 2 in communication with the cylinder chamber 4; annular pistons 6, 7 stored in the cylinder chamber 4 in an axially slidable manner; a seal 3 mounted to a pressure receiving part of the annular piston 6; a stopper member 14 arranged in the cylinder chamber 4 for restricting the slide of the seal 3 to avoid the seal 3 from arriving at the oil path (oil path between a step 2c and a flange 1b), the stopper member being a separate member from either of the inside housing 1 and the outside housing 2; and an engaging means provided on the stopper member 14 and engaged with the outside housing 2.