Volkswagen Golf / Golf GTI / Golf Variant. Manual — part 453
34 – Controls, Housing
1
Mechatronic
⇒ “1.1 Overview - Mechatronic”, page 28
⇒ “1.2 Mechatronic, Removing and Installing”, page 30
1.1
Overview - Mechatronic
1 - Transmission Fluid Drain
and Check Plug
❑ 45 Nm
❑ There is an overflow
pipe with a 8 mm inner
hex behind this bolt
-item 3-
❑ Drain the transmission
fluid via the drain- and
check plug and re‐
moved overflow pipe
2 - Seal
❑ Replace after removing
3 - Overflow Pipe
❑ 3 Nm
❑ Plastic
❑ To drain the transmis‐
sion fluid, remove the
drain and check plugs.
Refer to -item 1-
remove the overflow
pipe.
❑ The length of the over‐
flow pipe determines the
fluid level inside the
transmission
❑ Allocate according to
the Parts Catalog.
4 - Bolt
❑ Replace after removing
❑ Quantity: 10
❑ Tightening specification
and sequence. Refer to
⇒ Fig. ““Tightening Specification and Sequence for DSG Transmission Mechatronic -J743- ”“ ,
5 - Transmission Cover
❑ Removing and installing. Refer to
⇒ “1.2 Mechatronic, Removing and Installing”, page 30
6 - Bolt
❑ Replace after removing
❑ Quantity: 5
❑ Tightening specification and sequence. Refer to
⇒ Fig. ““Tightening Specification and Sequence for DSG Transmission Mechatronic -J743- ”“ ,
7 - Seal
❑ Replace after removing
8 - DSG Transmission Mechatronic - J743-
❑ Replace the O-ring after disassembly.
❑ With O-rings on connector
❑ Removing and installing. Refer to
⇒ “1.2 Mechatronic, Removing and Installing”, page 30
.
9 - Bleed Cap
❑ Placed on bleed pipe
10 - Bleed Pipe
❑ Replace after removing
❑ Pressed into transmission
11 - Transmission Fluid Pump
❑ Insert with new seal
❑ Removing and installing. Refer to
⇒ “8.2 Transmission Fluid Pump, Removing and Installing”, page 107
.
12 - Transmission Fluid Pump Cover
❑ Replace after removing
❑ With seal
❑ Removing and installing. Refer to
⇒ “8.2 Transmission Fluid Pump, Removing and Installing”, page 107
.
13 - Bolt
❑ Replace after removing
❑ Quantity: 4
❑ Tightening specification and sequence. Refer to
⇒ Fig. ““Tightening Specification and Sequence of the Transmission Fluid Pump Cover -A-.”“ ,
14 - Bolt
❑ Replace after removing
❑ Quantity: 4
❑ Different versions. For the correct allocation. Refer to the Parts Catalog.
❑ There are different bolts for the transmission fluid pump. Refer to
15 - Seal
❑ Replace after removing
Tightening specification and tightening sequence of the trans‐
mission cover -A-.
– Tighten the bolts -arrows- diagonally in steps to 16 Nm.
Tightening Specification and Sequence for DSG Transmission
Mechatronic - J743-
Note
Always replace bolts that were tightened with an additional turn.
– Tighten the bolts in steps in the sequence shown:
Step
Bolts
Tightening Specification/Additional
Turn
1.
-1 to 10-
5 Nm
2.
-1 to 10-
Tighten 90° further.
Tightening Specification and Sequence of the Transmission Fluid
Pump Cover -A-.
– Tighten the bolts -arrows- diagonally in steps to 8 Nm.
1.2
Mechatronic, Removing and Installing
⇒ “1.2.1 DSG Transmission Mechatronic J743 , Removing and
Installing, Transmission Installed”, page 30
.
⇒ “1.2.2 DSG Transmission Mechatronic J743 , Removing and
Installing, Transmission Removed”, page 39
.
1.2.1
DSG Transmission Mechatronic -
J743- , Removing and Installing, Trans‐
mission Installed
Special tools and workshop equipment required
♦ Torque Wrench 5-50Nm - VAG1331-
♦ Used Oil Collection and Extraction Unit - SMN372500-
♦ Oil Filler - VAS6262A-
Caution
This procedure contains mandatory replaceable parts. Refer
to component overview prior to starting procedure.
Mandatory Replacement Parts
♦ Bolts - DSG
®
Transmission Mechatronic - J743
♦ Bolts - Pendulum Support Bolts to Transmission
♦ Bolts - Transmission Fluid Pan
♦ Bolts - Transmission Fluid Pump Cover
♦ O-rings - DSG
®
Transmission Mechatronic - J743
♦ Seal - Transmission Fluid Drain and Check Plug
♦ Seal - Transmission Fluid Pan
Note
♦
Follow the guidelines for clean working conditions. Refer to
⇒ “3.2 Clean Working Conditions”, page 5
.
♦
Pay attention to the general repair information. Refer to
⇒ “3.3 General Repair Information”, page 6
Removing
Always make sure that no dirt enters an “open” transmission.
Dirt entering can cause a transmission malfunction especially with
»open« Direct Shift Gearbox (DSG
®
) Mechatronic and/or trans‐
mission fluid pump.
The Mechatronic can get stuck on the alignment pins when the
transmission is very warm. Let the transmission cold down.
– Move the selector lever into “P”.
– Remove the noise insulation. Refer to ⇒ Body Exterior; Rep.
Gr. 66 ; Noise Insulation; Overview - Noise Insulation .
If present:
– Remove the connecting hose between the charge air cooler
and the charge air pipe. Refer to ⇒ Rep. Gr. 21 ; Overview -
Charge Air System .
Note
It is possible that parts, which have nothing to do with the Me‐
chatronic unit, will have to be removed. It depends on the vehicle
equipment. Make sure there is enough room around the Mecha‐
tronic unit.
♦ Depending on the vehicle, the parts could be:
♦ Fan mount -arrow-
♦ Charge or cold air pipes
Caution
Risk of destroying Mechatronic with static discharge.
♦ Do not touch contacts in the Mechatronic connector with
hands.
– To discharge any static electricity, touch the vehicle ground
with hand (without wearing a glove). Refer to
.
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