Skoda Workshop Service and Repair Manuals

Removing mechatronics for double clutch gearbox -J743- –  Shift selector lever into position „P“.   Note If the battery earth strap is disconnected and connected, carry out certain additional operations → Electrical System; Rep. gr.27. –  Disconnect the battery-earth strap with the ignition off → Electrical System; Rep. gr.27. –  Remove the sound dampening system → Body Work; Rep. gr.50. –  Remove the front left wheelhouse liner → Body Work; Rep. gr.66.

–  Separate the electrical plug connections -1- for the bottom radiator fan at the fan shroud. –  Screw out screws -arrows- and remove fan shroud with radiator fans downwards.

–  Remove protection plate -A- at the bottom of the gearbox -arrows-; if applicable. –  If fitted, remove connecting hose between charge air cooler and charge air pipe → engine; Rep. gr.21.

–  Unscrew nuts -2- from bracket -1- on the oil pan and remove bracket from the threaded bores at the oil pan.   Note The threaded bores are welded at the front of the gearbox to the oil pan. –  Raise the cables in the area of the oil pan and attach. –  Position the catch pan under the gearbox.   WARNING Wear safety goggles. For vehicles Octavia II

Gearbox with drain plug -A- and check screw -B- installed up to 12.04.

The gearboxes installed as of 01.05 have only one check screw -B-. Oil can only be drained via check screw -B-. Continued for all vehicles

–  Unscrew the inspection plug -arrow- close to the pendulum support.   Note A plastic overflow tube with an 8 mm hexagon socket and a tightening torque of 3 Nm is located behind this screw. The length of the overflow tube determines the oil level in the gearbox, when replacing the tube assign via part number → Electronic Catalogue of Original Parts.

–  Remove overflow tube. Approx. 5.0 ltr of oil flows out. Furthermore, the catch pan remains under the gearbox. –  Screw in overflow tube and tighten to tightening torque → Chapter.

–  Remove pendulum support, to do so screw out screws -arrows A, B and C-. Afterwards the gearbox can be pressed slightly „towards the rear“ to the assembly carrier in order to gain sufficient space for removing the mechatronics.

–  Release screws -arrows- and remove cover for gearbox oil pump -A-. –  Grab with the hand (without gloves) at the mass, in order to discharge yourself electrostatically.   Caution t  Only then touch or remove the mechatronics for double clutch gearbox -J743-, after you have discharged yourself electrostatically at an earthed object beforehand, e.g. skin contact with mass. t  Under no circumstances must the plug contacts in the plug of the gearbox be touched with the hands, because the control unit can be destroyed through static discharge as well as the mechatronics.

–  Unlock the cap of the plug -1- on the mechatronics by turning it to the left and disconnect the plug from the gearbox.

–  Loosen screws -arrows- of the oil pan -A- crosswise and unscrew.   Note There is still gearbox oil in the oil pan, because not all of it can be drained off. –  Remove oil pan with the oil pan gasket. Always replace oil pan gasket → Electronic Catalogue of Original Parts. The cover for the gearbox oil pump and the screws of the oil pan must always be replaced → Electronic Catalogue of Original Parts.   Caution If the cover for the gearbox oil pump is not removed, when removing the mechatronics for double clutch gearbox -J743- the arm of the gearbox output r.p.m. sender -G195- and -G196- is damaged on the reverse side.

–  Release the catch -1- in -direction of arrow- using the release tool -T10465- and carefully detach.

–  Slacken the cable from the retaining lugs -arrows-, first from the top one and then from the bottom one.   Note Do not pull on the cable of the plug! If the cable is damaged, the gearbox input r.p.m. sender -G182-/temperature sender for clutch -G509- must be replaced.

–  Loosen fixing screws -1- to -10- in the prescribed sequence and unscrew.

–  Pull the mechantronics out of the gearbox housing so far until the arm of the gearbox output r.p.m. sender -G195- and -G196--B- on the reverse side is no longer located in the gearbox housing. –  Carefully swivel out the mechatronics für double clutch gearbox -J743- to the bottom.

–  Removing mechatronics for double clutch gearbox -J743-.   Caution Never raise the mechatronics at the arm of the gearbox output r.p.m. sender -G195- and -G196- or place it down on it.

–  Transport and place down the mechatronics, as illustrated in the fig.

Pay particular attention to the long arm of the gearbox output r.p.m. sender -G195- and -G196--arrow- when handling the mechatronics (if the »arm« is damaged, the mechatronics must be replaced).