A transmission device includes a casing accommodating a transmission gear and having an oil sump for retaining oil. The oil in the oil sump flows from a lubrication pump through a lubrication passage and is injected to the transmission gear. A connection portion is provided in a part of the lubrication passage, which part is disposed outside the casing. A direction control valve is provided downstream of the lubrication pump and upstream of the connection portion in the lubrication passage with respect to a flow direction of the oil. The direction control valve is configured to open the lubrication passage when a hydraulic pressure in the lubrication passage exceeds a predetermined value and to close the lubrication passage when the hydraulic pressure is equal to or lower than the predetermined value.

A transmission device includes a casing accommodating a transmission gear and having an oil sump for retaining oil. The oil in the oil sump flows from a lubrication pump through a lubrication passage and is injected to the transmission gear. A connection portion is provided in a part of the lubrication passage, which part is disposed outside the casing. A direction control valve is provided downstream of the lubrication pump and upstream of the connection portion in the lubrication passage with respect to a flow direction of the oil. The direction control valve is configured to open the lubrication passage when a hydraulic pressure in the lubrication passage exceeds a predetermined value and to close the lubrication passage when the hydraulic pressure is equal to or lower than the predetermined value.

A cooling and lubrication system for a motor vehicle drive unit includes a drive unit sump, a first mechanically-driven pump, a second mechanically-driven pump, and an oil/air separator reservoir, among other possible components. The drive unit sump holds drive unit fluid. The first mechanically-driven pump fluidly communicates with the drive unit sump, and the second mechanically-driven pump fluidly communicates with the drive unit sump. The oil/air separator reservoir resides downstream of the first mechanically-driven pump and resides downstream of the second mechanically-driven pump.

A cooling and lubrication system for a motor vehicle drive unit includes a drive unit sump, a first mechanically-driven pump, a second mechanically-driven pump, and an oil/air separator reservoir, among other possible components. The drive unit sump holds drive unit fluid. The first mechanically-driven pump fluidly communicates with the drive unit sump, and the second mechanically-driven pump fluidly communicates with the drive unit sump. The oil/air separator reservoir resides downstream of the first mechanically-driven pump and resides downstream of the second mechanically-driven pump.

A lubricant injector is provided including a body having a passageway, an inlet, an outlet, and an aperture for lubricant to flow from a measuring chamber into the passageway. A piston is slidable along the passageway. When the piston is in a retracted position, a discharge chamber is present in the passageway between the piston and the outlet. A biasing spring is disposed in the passageway for urging the piston towards the retracted position. The injector has a rest mode, wherein no pressurized lubricant is supplied to the inlet, and the piston is retracted. The injector has a pressurized mode wherein the piston is under pressure and is moved to its extended position to urge lubricant out the outlet. In the rest mode, the spring urges the piston towards its retracted position to create the discharge chamber and to open the aperture between the measuring chamber and the discharge chamber.

A lubricant injector is provided including a body having a passageway, an inlet, an outlet, and an aperture for lubricant to flow from a measuring chamber into the passageway. A piston is slidable along the passageway. When the piston is in a retracted position, a discharge chamber is present in the passageway between the piston and the outlet. A biasing spring is disposed in the passageway for urging the piston towards the retracted position. The injector has a rest mode, wherein no pressurized lubricant is supplied to the inlet, and the piston is retracted. The injector has a pressurized mode wherein the piston is under pressure and is moved to its extended position to urge lubricant out the outlet. In the rest mode, the spring urges the piston towards its retracted position to create the discharge chamber and to open the aperture between the measuring chamber and the discharge chamber.

A manual lubrication system for a manual toilet flush pump on a manual toilet of the type used in boats and RV's. The lubrication system comprises a lubricant reservoir affixed in parallel to the housing of the manual toilet flush pump laterally opposite the toilet, with a movable lubricant pump head located below the operating handle of the manual toilet flush pump and having an operating axis generally parallel to the that of the manual toilet flush pump's operating handle. A positive manual shutoff normally keeps the lubricant reservoir isolated from the normal in-flow of water to and through the manual toilet flush pump except when lubricant is being manually added during a maintenance procedure.

A manual lubrication system for a manual toilet flush pump on a manual toilet of the type used in boats and RV's. The lubrication system comprises a lubricant reservoir affixed in parallel to the housing of the manual toilet flush pump laterally opposite the toilet, with a movable lubricant pump head located below the operating handle of the manual toilet flush pump and having an operating axis generally parallel to the that of the manual toilet flush pump's operating handle. A positive manual shutoff normally keeps the lubricant reservoir isolated from the normal in-flow of water to and through the manual toilet flush pump except when lubricant is being manually added during a maintenance procedure.

A fluid nozzle element comprising a supply body with an attachment face and a bearing face opposite the attachment face and an axial passageway between the attachment face and the bearing face, the axial passageway communicating with a transverse opening provided in the supply body, further comprising a conduit structure communicating with the transverse opening extending laterally relative to the supply body to which it is connected by a first end, further comprising a free end forming a discharge end comprising a discharge port for discharging a fluid, the supply body and the conduit structure being comprised in a block made of a polymeric material

The present invention relates to a grease replacement method of replacing grease in a case (84) including a sealable gear chamber (31, 36) accommodating a gear (85) as a member to be lubricated, a grease injection port (61, 62) configured to inject grease into the gear chamber (31, 36), and a discharge port (32, 37) configured to discharge the grease in the gear chamber (31, 36), and a grease suction device to be used to perform this method. The grease replacement method includes a suction step (S2) of sucking the grease in the gear chamber (31, 36) from the grease injection port (61, 62) with the discharge port (32, 37) being open, and discharging the grease outside the case (84), and an injection step (S4) of injecting new grease into the grease injection port (61, 62) and supplying the new grease to the gear (85). This facilitates discharging of old grease.