Abstract: The present invention provides a wheel cylinder brake adjuster. The main body of the adjuster has an actuating cylinder, a front seat, a rear seat, an intake handle and a baffle plate. There is a thrust set, and an assembly ring surface arranged at a rear end of the rear seat. First and second intake holes are arranged at intervals on the assembly ring surface. An air path switching ring is placed on the assembly ring surface. The first and second air holes are arranged at intervals on the inner ring surface and have interiors interconnected via a draining space. A pressure release state is made possible when the air path switching ring is rotated to the first rotation position. A plurality of spacing support parts are supported between the inner ring surface and assembly ring surface so that a spaced air leakage space is normally formed.

Abstract: An adjustor for a secondary pump of a brake includes a stationary plate attached to the secondary pump, a cylinder attached to the stationary plate, a piston movable in the cylinder, a rod extended through the cylinder and connected to the piston, a handle connected to the cylinder, an inlet valve put on the handle, and an outlet valve put on the handle. Pressurized air can enter the cylinder through the handle and drive the piston and hence the rod while going in the cylinder. The inlet valve controls the inlet of the pressurized air into the cylinder through the cylinder handle. The outlet valve controls the release of the pressurized air from the cylinder through the handle.

Abstract: There is disclosed an adjustor for a secondary pump of a brake. The adjustor includes a stationary plate attached to the secondary pump, a cylinder attached to the stationary plate, a piston movable in the cylinder, a rod extended through the cylinder and connected to the piston, a handle connected to the cylinder, an inlet valve put on the handle, and an outlet valve put on the handle. Pressurized can enter the cylinder through the handle and drive the piston and hence the rod while going in the cylinder. The inlet valve controls the inlet of the pressurized air into the cylinder through the cylinder handle. The outlet valve controls the release of the pressurized air from the cylinder through the handle.

Abstract: A leakage detecting device has a cover, a first cup and a second cup. The cover is mounted on the opening of the water tank and has a through hole. The first cup is connected to the cover and communicates with the through hole in the cover. A tortuous air channel is defined in the first cup. The second cup is mounted on the first cup and has a second tortuous air channel communicating with the first tortuous air channel in the first cup. Accordingly, the leakage of cylinders of the vehicle engine can be precisely detected from the water tank of the vehicle.

Abstract: A cap for a vehicle radiator has a body, a sealing member, a biasing member and a connector. The body is detachably mounted on the mouth of the radiator. A protrusion with a central hole is mounted on the body. The sealing member is slidably attached to the body for sealing the opening in the radiator and has a flange, a seal and a stub. The stub extends upward from the top of the flange and extends through the central hole in the protrusion on the body. The outer periphery of the stub contacts with the inner surface of the central hole in the body. Accordingly, the stub can be securely held on the body to prevent a gap being defined between the seal and the opening. This gap prevention can avoid leak between the sealing member and the mouth occurring during the leak-detecting process of the radiator.