Abstract: A repair parts ordering management system that includes a parts account information database system. The parts account information database system may have a parts account information database storing at least one of parts numbers, classification information, and manufacturer information of repair parts. The parts account information database system is also operable to update and change the parts numbers, the classification information, and the manufacturer information. Also included in the repair parts ordering management system is an ordering account information database system that has an ordering account information database. The ordering account information database stores at least the parts numbers and the manufacturer information and can update and change this information.

Abstract: An engine oil supplying device wherein a lower case which supports a crank shaft is attached to a cylinder block of an engine. An oil pan is attached to the lower case and a chain case which covers a timing case is attached to one side surface of a crank shaft axis line of the engine On the inner side of the chain case, there is attached an oil pump which is driven by the crank shaft and which suctions oil from within the oil pan. One end of a main oil pathway opens toward an opening on a side surface on the crank shaft axis line of the cylinder block. The other end of the main oil pathway points towards the other side on the crank shaft axis line. Oil discharged from the oil pump is supplied to the main oil pathway. On a rotor plate of the oil pump which is attached to the chain case, there is provided a sealing member which seals the opening of the main oil pathway.

Abstract: A relief valve, anchored to a rotor plate, is centered in a concave housing area in a front journal bearing of an engine. Insetting the relief valve into the front of the engine correspondingly reduces the overall length of the engine. A semi-cylindrical auxiliary housing area is contiguous with the concave housing area. The auxiliary housing area and the concave housing area are spaced from the relief valve to provide a relief passageway for oil flow. The auxiliary housing area overhangs at least a portion of the relief valve. A relief hole in the relief valve leads to the relief passageway. Splashing of excess oil which is relieved from the relief valve is prevented, and smooth recovery of oil is enabled. Aeration is also lowered.