printable version

general information

AT sectional

1 - amplifying piston tape 2 - Coupling top gear 3 - converter housing 4 - Tape brake 5 - Coupling reverse gear 6 - Oil Pump 7 - Torque 8 - The input shaft 9 - Differential Gear 10 - The main transfer 11 - Carter AT 12 - Gear reduction gear 13 - Overrunning clutch 14 - Laying	15 - an intermediate gear 16 - Side cover 17 - Output gear 18 - Output shaft 19 - Brake low gear and reverse gear 20 - overrunning clutch 21 - Coupling modes forward 22 - Planetary reverse gear 23 - Straight-Coupling low gear 24 - Planetary gear modes forward 25 - The clutch drum reverse gear

4-speed AT (RE4F03B) installed on models with engines of 1.2 and 1.4 liters.

During the beginning of the movement AT acts as an ordinary clutch, and when the vehicle is the job of switching gears.

The main units of the AT are the torque converter (torque converter), planetary gear, hydraulic or electronic control units. To move to a different gear ratio in the planetary gear unit hydraulically applied brake disk and tape and disk clutch.

Torque converter on the functions corresponds to hydraulic clutch. Its task is the implementation of the clutch when starting and changing gears. The torque converter is equipped with a locking clutch, offering direct traction engine with AT.

Driving control AT

The control system of automatic transmission paired with the engine management system via CAN bus and based on an analysis of data from various information gauges (not necessarily directly related to the operation of the actual transmission), selects the optimum in terms of efficiency, smooth shifting and other mode of operation of the AT. AT has a control unit (TCM). When a fault is detected in the memory control unit writes the appropriate code (see. Specifications).

Location control system components AT

AT only maintenance procedure, the implementation of which should be done on a regular basis, it is to check the level of its working fluid (ATF) and replacing the ATF. The order of execution of the procedures set out in section Check of levels of liquids, the control of leakages and replacement of gear oil and Manual transmission AT (respectively).

Through the use of the D / V mode ?�P?� / ?�N?� (sensor PNP) to start the engine can be carried out only when the selector AT lever is in the "P" or ?�N?�, which helps prevent accidental movement of the car while trying to run.

And when the system sensors is used by the TCM, the AT goes to emergency mode. The vehicle can move forward only on the 4th gear. E / m shift valve de-energized.

This chapter provides only general information on the AT. For more information on the principles of operation and maintenance of the AT's Guide 179 "Automatic transmissions of modern cars" publisher "ARUS."

Driving hydraulic lines AT

1 - Turn on the converter 2 - Check valve TCC 3 - Turn off the converter 4 - servo tape 5 - The control valve 6 - Valve gear and piston accumulator 1-2 7 - Filter 8 - Valve gear shift points 3-2 9 - Pressure reducer 1st gear 10 - Check valve oil cooler 11 - Pressure reducing valve freewheel 12 - E / m pressure control valve in the lines of the AT 13 - E / m Valve TCC 14 - E / m valve freewheel 15 - E / m switching valve B 16 - E / m A switching valve 17 - oil pump

18 - Battery switch off actuator 19 - bypass valve torque converter 20 - valve modulation pressure 21 - Switching Valve B 22 - A switching valve 23 - Maslozabornik 24 - Manual valve 25 - Pressure control valve 26 - Coupling reverse gear 27 - Check valve freewheel 28 - Battery mode ?�N?� and ?�D?� 29 - Check valve battery 30 - The spool control valve 31 - overrunning clutch 32 - Coupling modes forward 33 - Brake 1st gear and reverse gear 34 - Coupling top gear

The design of the mechanism gear

1 - Torque 2 - oil pump 3 - The input shaft 4 - Tape brake 5 - Coupling reverse gear 6 - Clutch top gear 7/8 - Central / pinion transmission forward 9 - internal gear transmission forward 10 - planetary gear transmission forward 11/12 - Central / pinion reverse gear	13 - an internal gear reverse gear 14 - Planetary reverse gear 15 - Coupling forward 16 - Overrunning clutch 17 - overrunning clutch 18 - Straight-Coupling low gear 19 - Brake low gear and reverse gear 20 - Fuse mode parking 21 - Gear mode parking 22 - Output shaft 23 - an intermediate gear 24 - Output gear

The list of components involved in AT mode (part numbers correspond to the numbers illustrated)

Mode

5

6

15

17

Servo Tape

16

18

19

Blocking

2nd incl.

3rd off.

4th incl.

P

R

O

O

N

D * 4

1

O

1 * D

B

B

2

O

* 1 A

O

B

3

O

O

* 1 A

* 2 C

C

B

* 1 O

4

O

C

* 3 C

C

O

O

2

1

O

O

B

B

2

O

O

O

B

1

1

O

O

B

O

2

O

O

B

1 - Works when the mode switch ?�O / D?� is set to ?�OFF?�.
* 2 - The oil pressure is applied to both sides of the "2nd enabled" and "3rd off" amplifying piston tape.
* 3 - The oil pressure is applied to the side of the "4th included" provided * 2.
* 4 - AT will not switch to 4th gear when the mode switch ?�O / D?� is set to ?�OFF?�.
A - Works, when the throttle is open not more than 3/16, the engine brake is activated.
B - Works under hard acceleration.
C - Works but does not affect the transfer of power.
D - Works, when the throttle is open not more than 3/16; no effect on the power transfer.