Engine and Transmission, Separating
Engine and Transmission, Separating
Special tools, testers and auxiliary items required
• Scissor lift table (VAS 6131)
• Support set (VAS 6131/10)
• Supplementary set, Audi A8 (VAS 6131/11)
• Engine/transmission removed and attached to the (VAS 6131).
- Rotate the spindles for the support elements - 2 - on the left and right of the subframe completely downward.
- Remove the support pins from the spindles.
- Remove the subframe - 3 - to the side.
• A second technician is required to remove the subframe.
- Rotate the spindles for the support elements - 1 - on the left and right of the engine carrier - 4 - completely downward.
- Remove the bolts - arrows - for the engine mounts on the left and right.
- Remove the engine carrier.
- Remove the four base plates of attachments for the engine carrier and subframe from the (VAS 6131).
- Equip the (VAS 6131) with the (VAS 6131/10) and the (VAS 6131/11) as follows:
• The other attachments remain unchanged.
- Place attachments from the (VAS 6131/11) and the (VAS 6131/10) to the left side of the engine/transmission, as shown in the illustration.
- Position attachments from the (VAS 6131/10) on the right side of the engine/transmission, as shown in the illustration.
- Twist the spindles of the attachments upward far enough until all support pins make contact at the support points.
- Tighten the base plates for the attachments to 20 Nm to the (VAS 6131).
- Free up the Heated Oxygen Sensor (HO2S) 2 (G108) electrical wire.
- Remove the left catalytic converter with muffler nuts - arrows - from the exhaust manifold.
- Disconnect the electrical connector - 3 - (brown) for the Oxygen Sensor (O2S) 2 behind Three Way Catalytic Converter (TWC) (G131) and free up the electrical wire.
- Remove the bolt - arrow - for the exhaust pipe bracket.
• The flex joint in the front exhaust pipe must not be bent more than 10 degrees, otherwise it may be damaged.
- Remove the nut - 1 - and remove the left catalytic converter with muffler.
- Remove the right coolant pipe fasteners - arrows -.
- Disconnect the coolant pipe connection - arrow - and remove.
- Free up the HO2S (G39) electrical wire.
- Remove the right catalytic converter with muffler to exhaust manifold nuts - 1 through 3 -.
- Disconnect the electrical connector - 2 - (black) for the O2S behind TWC (G130).
- Remove the bolt - 1 - for the exhaust pipe bracket.
- Remove the heat shield bolts - 2 -.
- Free up the O2S behind TWC electrical wire.
• The flex joint in the front exhaust pipe must not be bent more than 10 degrees, otherwise it may be damaged.
- Remove the nut - 2 - and remove the right catalytic converter with muffler.
- Disconnect electrical harness connector from the transmission, to do this turn the twist lock counterclockwise - arrow -.
- Disconnect the electrical connector - 1 - (gray) from the Engine Speed (RPM) sensor (G28) and free up the electrical wire with heat shield.
- Disconnect the coolant hoses clamps - arrows -.
- Disconnect the electrical connector from the engine mount.
- Remove the wiring harness clip - 1 - from the engine mount.
- Remove the engine mount bolts - arrows -.
- Remove the starter bolts - 1 and 4 - and starter with connected wiring harness.
- When disassembled, rotate the engine to Top Dead Center (TDC) and align the mark on the transmission housing with the mark on the converter.
• Before removing the converter from drive plate, mark the position of both components to each other.
- Remove the torque converter to drive plate bolts (Quantity 3).
• To loosen the torque converter bolts counter hold the main bolt of the crankshaft.
- Remove the engine/transmission bolts.
- Loosen the side clamping screws - 1 - on the (VAS 6131) and pull the rear platform top with transmission toward the rear - arrow -, simultaneously push the torque converter through the opening of drive plate while doing this.
- Secure the torque converter in the transmission so that it cannot fall out.