A method for operating an internal combustion engine wherein the internal combustion engine to be operated is supplied with lubricating oil via an oil circuit. A measurement value of a total base number and/or a measurement value of the viscosity of the lubricating oil currently used in the oil circuit for the lubrication is detected. Dependent on the established measurement value of the total base number and/or dependent on the established measurement value of the viscosity an exchange oil quantity for the oil circuit is determined. Currently used lubricating oil to an extent corresponding to the exchange oil quantity is removed from the oil circuit. New lubricating oil to an extent corresponding to the exchange oil quantity is supplied to the oil circuit.

A fluid drain system is provided, comprising: a fluid reservoir having at least two sumps including a first sump having a first hole for draining fluid from the fluid reservoir and a second sump having a second hole for draining fluid from the fluid reservoir; a first drain plug having a first end with a first drive feature configured to be operated with a tool for insertion and removal of the first drain plug into and out of the first hole of the fluid reservoir and a second end with a second drive feature; and a second drain plug having a first end with a third drive feature configured to be engaged by the second drive feature of the first drain plug for insertion and removal of the second drain plug into and out of the second hole of the fluid reservoir.

An oil tank filling system for filling the oil tank of a gas turbine engine. The system includes an oil tank located within the core of the engine, an engine oil filling port located on a bifurcation below the core of the engine, and an oil tank filling pipe that leads from the engine oil filling port to a tank filling port on the oil tank. The engine oil filling port is detachably connectable to an off-engine oil pump that when connected to the engine oil filling port and supplied with oil pumps oil into the engine oil filling port and through the oil tank filling pipe to the tank filling port to fill the oil tank. A method of filling the oil tank of a gas turbine engine and a gas turbine engine that includes the oil tank filling system are also disclosed.

A fluid drainage tool and method for utilizing the same is disclosed. The fluid drainage tool includes one or more pairs of vacuum members and a mechanical clamping mechanism. The mechanical clamping mechanism is coupled to the one or more pairs of vacuum members and is adapted to move the one or more pairs of vacuum members between an unclamped configuration and a clamped configuration. In the unclamped configuration, a gap formed by each of the one or more pairs of the vacuum members is larger than an original outer diameter of a pliable tube. In the clamped configuration, the gap is smaller than the original outer diameter of the pliable tube. In the clamped configuration, the one or more pairs of vacuum members compresses the pliable tube and generates a suction force within the pliable tube when translated along the pliable tube.

A fluid drain system is provided, comprising: a fluid reservoir having at least two sumps including a first sump having a first hole for draining fluid from the fluid reservoir and a second sump having a second hole for draining fluid from the fluid reservoir; a first drain plug having a first end with a first drive feature configured to be operated with a tool for insertion and removal of the first drain plug into and out of the first hole of the fluid reservoir and a second end with a second drive feature; and a second drain plug having a first end with a third drive feature configured to be engaged by the second drive feature of the first drain plug for insertion and removal of the second drain plug into and out of the second hole of the fluid reservoir.

A system. The system includes a control module of a fluid system of a machine, a battery, a fluid component and an electrical circuit. The electrical circuit is configured to electrically couple the battery to the control module via the fluid component, and to activate the control module when the machine is powered down.

A drain petcock having a central channel for drainage, a side wall aperture for draining, and a closing plug that closes the central channel and overlies the side wall aperture. The partial removal of the closing plug enables a controlled flow for initial draining. A full removal of the closing plug enables a more controlled flow through the central channel for further draining.

A system includes an oil catch compartment, at least one magnetic stud or rod, a motor compartment, and a switch. The oil catch compartment includes a first end configured for coupling to an oil filter. The at least one magnetic stud or rod is positioned along a sidewall of the oil catch compartment. The motor compartment includes a gearbox shaft and a puncturing device. The gearbox shaft is telescopically coupled to a second end of the oil catch compartment. The puncturing device is coupled to the gearbox shaft and positioned at least partially within the housing of the motor compartment or the oil catch compartment. The switch is formed on an outside surface of a battery compartment and communicatively connected to a motor coupled to the gearbox shaft. The switch is actuatable to cause the motor to advance the puncturing device via the gearbox shaft.

A system. The system includes a valve assembly. The valve assembly includes a first port, a second port fluidically couplable with the first port upon application of negative pressure at the first port, a third port fluidically couplable with the first port upon application of positive pressure at the first port, and a first check valve positioned between the first port and the second port. The system also includes a second check valve fluidically couplable with the third port upon the application of the positive pressure at the first port. The second check valve is positioned external to the valve assembly.

A robotic servicing system. The robotic servicing system includes an evacuation system, a refill system and a robotic assembly. The evacuation system includes a first quick connect fitting configured to mate with a quick connect valve of a vehicle. The refill system includes a second quick connect fitting configure to mate with the quick connect valve of the vehicle. The robotic assembly is couplable to the evacuation system and the refill system, and is configured to autonomously connect the first and second quick connection fittings to the quick connect valve of the vehicle.