A transmission comprising a housing having one and the other longitudinal end walls. An input shaft is rotatably supported by a bearing in the one longitudinal end wall. A bearing retainer having therein an opening through which the input shaft extends is mounted on the outer surface of the one longitudinal end wall and cooperates with the bearing to define a chamber. A seal member is disposed between the opening and the input shaft within the chamber. An oil receiver is disposed within the housing adjacent to an input gear mounted on the input shaft and in mesh with a counter gear mounted on a counter shaft. Lubricating oil within a reservoir at the bottom of the housing is scooped up by the counter gear and is received by the receiver. The oil is introduced through a passage from the receiver into the chamber to lubricate the bearing and the seal member.
An oil seal packing lubricating system of a manual transmission in which the lubricant is supplied from outside of the oil seal packing, including a lubricant introducing rib for guiding the lubricant fed from outside to a lip surface of the oil seal packing in a zone where an outer surface of the input shaft moves upwardly during its rotation, and at least one lubricant deflecting rib for deflecting a swirling flow of lubricant toward the lip surface of the oil seal packing. The Lubricant deflecting rib is shaped such that it draws nearer to the outer surface of the input shaft in going in the direction of rotation of the input shaft.
A change-speed gearing assembly including upper and lower bearings carried on a partition wall of a casing for the assembly respectively for supporting thereon input and counter shafts, and a bearing retainer secured in a fluid-tight manner to the outside face of the partition wall to retain both the bearings in place. The input shaft extends outwardly through an annular seal member carried on the upper portion of the bearing retainer coaxially with the upper bearing. The bearing retainer is formed with upper and lower cavities and is formed at one side thereof with a vertical groove which opens at its upper end into a side portion of the upper cavity located above the lower edge of the seal member and at its lower end into the upper portion of the lower cavity to maintain the level of lubricating oil in the upper cavity above the lower edge of the seal member.
A gear assembly comprising a lower gear wheel (18) and an upper gear wheel (19) contained within a housing (10, 11), the lower gear wheel being supported by bearings (20, 21) and the upper gear wheel by bearings (22, 23). The housing has wall portions (32, 34, 35, 36) which extend close to the periphery of the gear wheels so that lubricating oil, fed from a chamber (30), is entrained by the gear wheels and carried to the top of gear wheel (19) where it is diverted and fed through passages to the bearings (22, 23). Further oil carried by the upper gear wheel is diverted to passages leading to the bearings (20, 21), and excess circulating oil is returned to the chamber (30) by way of an opening (39).
An output reduction gear type of manual transmission having a reduction gear chamber formed by partitions disposed on opposite sides of a reduction gear unit, an oil inflow structure comprising an oil inflow passage formed at a lower end of the reduction gear unit and tapered roller bearings supporting an output shaft and a counter shaft which are coupled by the reduction gear unit, an oil outflow structure comprising an oil tray which collects oil splashed by the counter shaft and the reduction gear unit and an oil outflow passage formed at an upper part of the reduction gear unit.
A transmission system for a motor vehicle with two powered axles has an engine aligned perpendicular to the driving direction and a transmission parallel to the axis of the engine shaft and includes an angle gear housing flangemounted on the side of the transmission housing, both housings having a lubricant supply for centrifugal or splash lubrication of the corresponding gear parts. The lubricant supplies, which are separated from each other by a partition, are interconnected by at least one first partition opening which serves as a lubrication inlet and at least one second partition opening which serves as a lubrication return. The second partition opening is located not below a first horizontal plane which passes approximately through the lower edge of a shaft bearing arrangement in the partition for the connecting shaft and the first partition opening is located above a second horizontal plane which passes approximately through the uppermost second partition opening. In addition, a lubricant-collecting and -conducting device is located inside the transmission housing.
