6.3.1. General information
On the car the automatic transmission
of the RL4F03A type of model 34υ68, four-stage with four transfers of a forward course, including one raising, and one transfer of a backing can be established. The box consists of the hydrotransformer, a two-level planetary reducer with tape brakes of friction clutches and the hydraulic control unit, the main transfer with differential and the electronic device for use of teams of management. Transfers are switched automatically depending on speed of movement and engine loading. The lever of the selector of a transmission has six provisions: R parking;
R a backing; N neutral situation; D automatic gear shifting of a forward course (I, II and III); 2 automatic switching of I and II transfers; 1 automatic inclusion of the I transfer.
Fig. 4.44. Details of an automatic transmission: 1 sealing rings; 2 an epiploon; 3 the case of the oil pump; 4 gear wheels of the oil pump; 5 a cover of the oil pump; 6 a persistent washer; 7 the needle bearing; 8, 15 cases of friction clutches; 9 laying; 10, 16, 22 the piston of inclusion of friction clutches; 11, 17 support;
12 lock rings; 13 a friction clutch disk with external gearing; 14 disks; 18 a friction clutch disk with internal gearing; 19 a concave disk; 20 a support of a spring of the coupling of a forward course; 21 a returnable spring; 23 a friction clutch of a forward course; 24 the case of a friction clutch of inclusion of a forward course; 25 a support of a spring of the piston of a friction clutch of a backing; 26 the piston of inclusion of a friction clutch of the I transfer and backing transfer; 27 a gear ring of a transmission brake;
28 a gear wheel of internal gearing; 29 a gear wheel of external gearing; 30 the carriage of satellites; 31 a conducted gear wheel of the main transfer; 32 a friction clutch nave; 33 a target shaft; 34 the bearing; 35 an adjusting washer; 36 the conic roller bearing;
37 a leading gear wheel of a drive of the main transfer; 38 a conducted gear wheel of a drive of the main transfer; 39 nuts; 40 the bearing of a leading gear wheel of the main transfer; 41 a leading gear wheel of the main transfer; 42 a pin of fastening of a tape brake; 43 a tape brake;
44 a piston support; 45 the piston of a drive of a tape brake;
46 a spring; 47 a rod of a tape brake
Fig. 4.45. Differential details: 1 a hydrotransformer case; 2 an epiploon; 3 a sealing ring; 4 the speedometer sensor; 5 a semi-axial gear wheel; 6 an axis of satellites;
7 satellites; 8 persistent washers; 9 the bearing; 10 a gear wheel of a drive of a speedometer; 11 a differential box; 12 a conducted gear wheel of the main transfer; 13 an adjusting washer of an axial gap of differential; 14 a leading gear wheel of the main transfer; 15 the bearing of a leading gear wheel of the main transfer; 16 an adjusting washer of a leading gear wheel of the main transfer; 17 a conducted gear wheel of a drive of the main transfer; 18 a nut of a shaft of a leading gear wheel of the main transfer
Fig. 4.46. Details of the mechanism of gear shifting: 1 draft of the selector of a transmission; 2 the lever of compulsory return gear shifting; 3 a selector cam; 4 a lamellar spring of the reduktsionny valve; 5 the switch of the blocking device of a starter; 6 a selector cable; 7 sector of the lever of the selector; 8 the blocking button; 9 the handle of the lever of the selector; 10 a control lamp of inclusion of transfer; 11 a spring; 12 an arm; 13 laying; 14 a cable of compulsory return gear shifting; 15 draft of a drive of the position "R" of the lever of the selector
Inclusion of the fourth overdrive gear («Overdrive») is carried out by means of the button located on the lever of the selector. Details of a transmission are shown on fig. 4.44
, differential details on fig. 4.45
, details of the mechanism of gear shifting on fig. 4.46
At installation of the lever of the selector in the situation "R" mechanical blocking of a target shaft of the box, obstructing to spontaneous traffic of the car is carried out. Simultaneous turning on of the parking brake increases reliability and safety when parking car. In this situation engine start-up is possible.
The situation "N" is used at start-up of the engine and its work at the motionless car. In need of start-up of the decayed engine at car movement the situation "N" also is used.
Situation "D" is used under usual conditions of driving. In need of low gear inclusion (for example, when overtaking, emergency maneuver) it is necessary to press a pedal of management of supply of fuel against the stop.
Moving of the lever of the selector to situation "2" provides a confident movement in a hilly terrain, at towage of the trailer and is used for intensive braking by the engine and dispersal. Return compulsory inclusion of a low gear is allowed by pressing of a pedal of management by supply of fuel against the stop. This situation it is possible to include no more than 95 km/h at speed of the car.
Situation "1" is used for intensive braking by the engine and can be included for the speed to 50 km/h.
For compulsory inclusion of the I transfer from position "D" or "2" of the lever of the selector it is necessary to press against the stop a pedal of management of supply of fuel.
The ignition key is taken out from the lock only in the position "R" of the lever of the selector which is blocked after a key vynimaniye from the lock.