The differential device measuring tool measures an inflow amount of lubricating oil flowing into a housing space through a communication hole during the rotation of a differential case having a case main body in which the housing space and the communication hole are formed and a bearing boss having a through-hole protruding from the case main body and communicating with the housing space. The measuring tool has a collecting portion and a deriving portion. The collecting portion does not interfere with the rotating differential case in the housing space in which the differential gear mechanism is not housed, and has a recess opening and collects the lubricating oil flowing into the housing space through the communication hole. The deriving portion is inserted through the through-hole of the bearing boss and have a deriving flow channel. The deriving flow channel communicates with the recess, and extends to the outside.

A power unit includes: a crankcase which accommodates a crankshaft and a main shaft arranged in parallel to each other; a crank side cover which covers one end portion of the crankshaft from the outside in an axial direction of the crankshaft; a primary driven gear which is provided in the main shaft and meshes with a primary drive gear of the crankshaft; a clutch provided at one end portion of the main shaft; and a clutch cover which covers the clutch from the outside in an axial direction of the main shaft and is fastened and fixed to a packing surface provided on the crankcase to surround the clutch, wherein the primary driven gear and the packing surface overlap in a virtual straight line when viewed from the axial direction of the main shaft.

A method of mounting a gearbox is described. The gearbox includes an outer sun gear and planet gears meshing with an inner sun gear and with the outer sun gear and each mounted for free rotation around a pivot of a planet carrier. The outer sun gear includes a first crown having a first toothing and a second crown having a second toothing each meshing with first and second toothings of the planet gears. The method consists in applying simultaneously and independently a first torque to the first crown centered on the axis of the first crown and a second torque is applied to the second crown centered on the axis of the second crown, the first torque and the second torque having identical values.

Drive units for a vehicle having an electric machine and a transmission device are disclosed, as well as methods for assembling the drive units. The method may include mounting the transmission device in a transmission housing; passing an assembly mandrel axially through an aperture in the transmission housing and through a pinion shaft, which is designed as a hollow shaft and is rotatably mounted in the transmission housing; and centering a rotor shaft, which is designed at least partially as a hollow shaft, on the assembly mandrel. A rotor of the electric machine may be pushed axially onto the rotor shaft; the rotor shaft may be inserted axially into the pinion shaft, wherein a set of splines on the rotor shaft engages in a set of splines on the pinion shaft; a stator of the electric machine may be pushed axially onto the rotor of the electric machine and fixing the stator on the transmission housing; and the assembly mandrel may be removed and the aperture in the transmission housing may be closed with a closure cover.

A tensioner comprising a base, a shaft extending from the base, a pivot arm pivotally engaged with the shaft, a torsion spring disposed between the pivot arm the base, a base portion cooperatively engagable with a pivot arm portion upon an axial movement of the pivot arm to a first position, a removable member engaged with the shaft to retain the pivot arm in the first position, the first position limiting the pivot arm to a first range of movement, and the pivot arm axially moveable to a second position upon removal of the removable member, the second position limiting the pivot arm to a second range of movement.

A method for assembling an axle assembly for a vehicle including that a pinion gear is inserted into a differential housing. The pinion gear having a first end and a second end opposite the first end. The pinion gear further includes a gear head at the first end, external threads proximate the second end, and external splines located a first distance away from the second end. The method further includes that a flange is slid over the second end of the pinion gear. The flange including internal splines. The method also includes that the internal splines of the flange are engaged with the external splines of the pinion gear and the flange is anchored to prevent the flange and the pinion gear from rotating. The method may further include that ultrasonic sound waves are transmitted through the pinion gear and reflections of the ultrasonic sound waves are detected.

A clutch includes first and second sheaves, the first sheave including a housing with a slot. A bar is inserted within the slot and a bolt engaged with a threaded opening in the bar and tensioned such that it presses against the second sheave forcing it outwardly against a biasing force. The bar may include two end portions with different widths for two different types of clutches, each end portion including a threaded opening. The clutch may include a slider mounted to the second sheave and positioned with the slot. The bar may include a recess on a bottom surface providing clearance for the slider.

A device for mounting a ring gear of an epicyclic gear train, the ring gear including a front ring gear and a rear ring gear, the device including: a plurality of longitudinal guides; a front mounting forming a portion of circle, including: at least two holes for passing the guides; a plurality of first system for supporting and rotating the front ring gear relative to the axis thereof, movable between a first position in which the front ring gear is supported and can rotate relative to the axis thereof and a second position in which the front ring gear is not supported; a rear mounting forming a portion of circle, including: at least two holes for passing the guides; and a plurality of second system for supporting and rotating the rear ring gear relative to the axis thereof, movable between a third position in which the rear ring gear is supported and can rotate relative to the axis thereof and a fourth position in which the rear ring gear is not supported.

An assembly device (29) for inserting a stator (4) of an electric machine (3) into a bell-shaped transmission housing (1) includes an inner guide element (38), which is guidable, in form-locking manner, relative to a rotor hub (9a) or a transmission input shaft (6) accommodating the rotor hub (9a), and an outer guide element (37), which is guidable in form-locking manner at the transmission housing (1). The guide elements (37 and 38) are radially spaced apart and fixed to each other with at least one radially extending connecting element (39). At least one sliding member (30) is longitudinally displaceably guided in the connecting element (39) and includes a first, radially outer sliding member part (31) for form-locking engagement at an outer circumference of the stator (4) and a second, radially inner sliding member part (32) for engagement at an end face of the stator (4).

A method for assembling an axle assembly for a vehicle including that a pinion gear is inserted into a differential housing. The pinion gear having a first end and a second end opposite the first end. The pinion gear further includes a gear head at the first end, external threads proximate the second end, and external splines located a first distance away from the second end. The method further includes that a flange is slid over the second end of the pinion gear. The flange including internal splines. The method also includes that the internal splines of the flange are engaged with the external splines of the pinion gear and the flange is anchored to prevent the flange and the pinion gear from rotating. The method may further include that ultrasonic sound waves are transmitted through the pinion gear and reflections of the ultrasonic sound waves are detected.