Design and operation of transmission

Power transmission to the drive shaft of the main transmission shaft through two toothed wheels: primary and secondary.

Clutch plate is mounted directly on the input shaft splines. Gears from 1st to 4th gear fixed to the shaft gear 5th gear rotates freely. When the 5th gear pinion connected to the shaft by synchronized clutch 4 (Fig. 5.15) including the 5th gear. The primary shaft rotates in roller bearings mounted in the clutch housing, and a ball bearing installed in the transmission housing.

Pinion gear and 5th gear mounted fixedly on the secondary shaft. All the other gear wheels rotating primary shaft, but when the clutch is not in effect, they are in a free mode. The gearwheel for 5th gear mounted on the output shaft by spline fitting. Toothed wheel 1st to 4th gear during the clutch engagement are connected to the secondary shaft by synchronized clutch. Sleeve 1-2, 3-4 moving gears are in constant mesh with the output shaft via spline connection. Bearing secondary shaft disposed in the clutch housing, the roller, and in the transmission housing - ball.

The gears and the mechanism incorporating the 5th gear are arranged outside the gearbox housing in a removable housing.

The gear change mechanism is composed of synchronized clutches, forks and shift rod. Gear wheel reverse gear is located on the shaft reverse gear.

Differential located in the clutch housing. On epicyclic (driven) gear torque is transmitted from the drive pinion located on the transaxle output shaft. Leading and epicyclic pinion cylinder. Differential consisting of side gear and satellites, transmits the rotation directly on the half of the front wheels through constant velocity joints, made in the form of a spider (the CV joints).

Synchronized clutch gear used in the manual to enable transmission of torque from the input shaft to the secondary. The coupling consists of:

- Hub 6 (fig. 5.16), which has internal splines which connect it fixedly to the output shaft, and external splines, which can move an outer ring clutches with internal splines;

- Coupling the outer ring 3 having internal splines corresponding to the external splines of the hub and splined crowns freely rotating gears appropriate gear, and an annular groove for engagement with the shift fork;

- Conical locking ring 2, the clock (equalizing) the angular velocity of rotation of the output shaft and rotating freely selectable transmission gear;

- Crackers 4 spring-loaded leaf spring 5.

When switching the transmission clutch squeezed, ie the crankshaft of the engine and gearbox input shaft disconnected, therefore, a primary shaft with fixed gears on it first, second, third and fourth gears, and the corresponding output shaft gears rotate freely, regardless of the speed rotation of the crankshaft of the engine and the wheels of the car.

Fork shaft gear being in constant mesh with the outer ring 3 synchronized clutch, moving in the direction of gears corresponding to the transmission through the outer ring 3 moves the internal splines biscuit 4, which presses the conical locking ring 2 to the tapered surface of the associated toothed wheel, creating increased friction in the contact zone, which leads to equalization of the angular velocity of the gear and synchronized clutch. The outer ring clutch comes on splined crown gear 1.

Thus, the primary and secondary shaft are connected and rotate at a speed proportional to the ratio of the selected gear.

Lubrication freely rotating gears without bearings through a shaft made in one (fig. 5.16) and B channels of lubricating grooves A.

The transfer of torque through a transmission from the input shaft on the half is shown schematically in Fig. 5.17.

The direction of rotation of the output shaft is reversed by administering to engage reverse gear (idler gear) arranged on the reverse gear ox.