Skoda Workshop Service and Repair Manuals

Installing mechatronics for double clutch gearbox -J743-

Before the installation make sure that the gearbox input r.p.m. sender -G182- and temperature sender for clutch -G509--A- are installed.

If the arm of the gearbox output r.p.m. sender -G195- and -G196--arrow- is damaged, the complete mechatronics must be replaced. –  Grab with the hand (without gloves) at the mass, in order to discharge yourself electrostatically before seizing the mechatronics.   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.

–  Carefully insert the mechatronics for double clutch gearbox -J743- into the gearbox housing.

Pay attention to the correct seating of the fit pin -A- in the gearbox housing -arrow 1- and the arm of the gearbox output r.p.m. sender -G195- and -G196--B- in the guide -arrow 2- at the gearbox housing.   Note t  Do not get the cable of the gearbox input r.p.m. sender -G182- and the temperature sender for clutch -G509- trapped.

t  When mounting the mechatronics for double clutch gearbox -J743- the cable of the plug -A- must not get trapped. If the cable is damaged, the gearbox input r.p.m. sender -G182-/temperature sender for clutch -G509- must be replaced. t  The long arm of the gearbox output r.p.m. sender -G195- and -G196- on the reverse side of the mechatronics for double clutch gearbox -J743- must not be damaged. –  Screw in new screws -1- to -10- by hand. –  Tighten the screws in the given sequence to 5 Nm + torque a further 90° (1/4 turn). –  First hang the cable -A- in the upper, then in the lower retaining lug -arrows-. –  Mount plug and lock into position.

–  Replace both O-rings -arrows- at the connection of the mechatronics → Electronic Catalogue of Original Parts. –  Moisten O-rings with DSG oil. –  Clean sealing surfaces and eliminate residues of oil. –  Pay attention to correct fitting of new oil pan gasket. –  Position oil pan. At the same time do not get the cables trapped.

–  Insert new screws -arrows- for the oil pan -A- and tighten crosswise in several stages to tightening torque → Chapter.

–  Fit new cover for gearbox oil pump -A- and tighten screws -arrows- in successive stages to tightening torque → Chapter. –  Install cable clip on the oil pan and tighten the nuts to 10 Nm.

–  Mount the plug -A- of the mechatronics as follows: l  The arrows -D- on the mechatronics -B- and on the plug -A- as well as the peg -C- must be on the same line and point upwards. l  Then mount the plug -A- carefully up to the stop and lock the cap by turning it to the right in -direction of arrow-.

–  Install fan -arrows- and fit together the plug connections -1- of the bottom radiator fan at the fan shroud.

–  Install pendulum support, to do so tighten screws -arrows A, B and C- to tightening torque → Engine; Rep. gr.10. –  If fitted, install connecting hose between charge air cooler and charge air pipe → Engine; Rep. gr.21.   Note If the battery earth strap is disconnected and connected, carry out certain additional operations → Electrical System; Rep. gr.27. –  Connect earth strap of battery → Electrical System; Rep. gr.27.   Caution Do not start the engine and tow the vehicle without filling the double clutch gearbox with oil. –  Replace gearbox oil filter (instructions, when the gearbox oil filter must be replaced and when not → Chapter). –  Pour in gear oil → Chapter. –  Install the noise insulation → Body Work; Rep. gr.50. After the installation of the mechatronics for double clutch gearbox -J743-, a basic setting must be performed with the → Vehicle diagnostic tester.