B2CG6SK1 - 406D9 AL4 AUTOMATIC GEARBOX

REMOVAL - REFITTING HYDRAULIC BLOCK - SOLENOID VALVES

1 - REMOVAL

1 - 1 - HYDRAULIC BLOCK

WARNING : this operation requires a great deal of care; take all possible cleanliness precautions .

Place the vehicle on a lift .

Disconnect the battery .

Position a tray to retrieve the oil from the hydraulic block cover (Approximately 1,5 litre(s)) .

Remove :

• the casing bolts (1)
• the casing (2)

Unclip the connectors of sequence solenoid valves, gently levering them with a screwdriver .

Disconnect the 6 sequence solenoid valves .

Remove the 7 bolts (3) .

Move aside the hydraulic block .

Disconnect the solenoid valves (4) - (5) .

Remove the hydraulic block .

IMPERATIVE : do not drop the manual valve (6) .

1 - 2 - SOLENOID VALVE(S) IN THE HYDRAULIC BLOCK

(6) Manual valve (MV) .

(7) EVS1 sequential solenoid valve .

(8) EVS2 sequential solenoid valve .

(9) EVS3 sequential solenoid valve .

(10) EVS4 sequential solenoid valve .

(11) EVS5 sequential solenoid valve .

(12) EVS6 sequential solenoid valve .

(13) Main pressure modulation solenoid valve EVM .

(14) Converter pressure modulating solenoid valve (differential solenoid valve) .

NOTE : it is not necessary to remove the hydraulic block in order to remove the sequence solenoid valves .

IMPERATIVE : as soon as the solenoid valve (11) is removed, ensure that the hydraulic slide valve is controlled by the solenoid valve, so that it does not fall ; change the solenoid valve seals each time the solenoid valves are refitted .

NOTE : the mounting bolts of the solenoid valves are tightened to 1 dan.m .

2 - REFITTING

IMPERATIVE : check the presence of the seals (15) (new seals) .

Offer up the hydraulic block .

Reconnect the solenoid valves (4) - (5) .

WARNING : take care that the manual valve (6) is engaged in the lug (A) of the notched section (16) .

Replace the mounting bolts in the hydraulic block (Tightening torque 0.8 da.Nm) Follow the order indicated .

Reconnect the 6 sequence solenoid valves .

IMPERATIVE : adjust the internal control, the plate (17) and the notched section (16) ; adjust the multifunction switch .

Ensure that the gear selector lever functions correctly in all the positions .

Fit :

• the housing (2) with a new seal
• the casing bolts (1) (tightening torque 1 da.Nm)
• the sleeve of the air filter

Connect the battery .

Carry out :

• the topping up of the automatic gearbox oil
• updating of the oil wear counter value