The invention discloses an oil leakage preventing
clutch slave cylinder. The oil leakage preventing
clutch slave cylinder comprises a cylinder body and a
piston arranged in the cylinder body in a slidable manner, wherein a bulge structure is arranged on the outer surface of the cylinder body, an oil hole communicated with a
closed space is formed in the bulge structure, and a
cut-through round through hole is formed in an elastic oil plug. The
clutch slave cylinder further comprises an
oil tank, an oil guiding
pipe is arranged on the
oil tank, one end of the oil guiding
pipe communicates with the
oil tank, the other end of the oil guiding
pipe penetrates through the elastic oil plug and extends into the
closed space, a retaining nut is arranged on the oil guiding pipe in a sleeving manner, one end of the retaining nut is fixed to the oil tank, and the other end of the retaining nut is arranged on the bulge structure in a screwing manner. The problem of the existing clutch slave cylinder that because an oil outlet
nozzle of the hydraulic oil tank is directly arranged on an oil inlet
nozzle on the clutch slave cylinder in a screwing manner and the connecting part between the hydraulic oil tank and the clutch slave cylinder easily loosens, oil leaks from the connecting part is solved.