Vehicles as of 07.03 Audi A4 B6

Scheme 39

1. Unscrew fuel hose from connection on fuel rail pipe. To do so, counterhold using an open-end wrench at each hex head -1- and -3- and unscrew union nut -2-.

Scheme 40

Scheme 41

Scheme 42

1. Disconnect the following lines/harness connectors: At EVAPorative Emission (EVAP) canister purge regulator valve Vacuum hose at EVAPorative Emission (EVAP) canister purge regulator valve At Mass Air Flow (MAF) sensor
2. Disconnect hose connections, move wires free and remove air filter housing (arrows). NOTE: Place a rag under the hydraulic pressure lines, to catch escaping hydraulic fluid.
3. Unbolt hydraulic pressure line for power steering at rear coolant pipe -1- and disconnect the line at the height of right cylinder head -2-.
4. Pry off both covers -3- using a screwdriver.
5. Loosen hex-nuts -4- by several turns.
6. Loosen wiper arm -2- by lightly tilting from wiper axle.
7. Remove hex nuts completely and remove wiper arms.
8. Disconnect securing clips -1- and remove cowl grill -5-.

Scheme 43

1. Disconnect electrical harness connector (arrow) at Brake Booster Pressure Sensor -G294-.

Scheme 44

Scheme 45

Scheme 46

1. Remove heater core E-box cover (arrows).
2. Using a screwdriver, pry off retaining bracket (arrow).
3. Disengage connector catches (arrows) and disconnect harness connectors -1- and -2- from Engine Control Module (ECM).

Scheme 47

1. Unclip Transmission Control Module (TCM) retaining bracket.
2. Disengage harness connector (arrow) and disconnect it from Transmission Control Module (TCM).

Scheme 48

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Scheme 50

Scheme 51

Scheme 52

Scheme 53

Scheme 54

Scheme 55

Scheme 56

Scheme 57

Scheme 58

Scheme 59

1. Disconnect rear connectors -2- on connector strip and set wiring harness aside.
2. Unbolt electrical wire connection -1-.
3. Disengage locking mechanisms (arrows) and remove secondary relay carrier in E-Box toward top.
4. Unhook engine wiring harness at E-box and at bulkhead and move it free.
5. Remove heat shield for harness connectors at left of bulkhead, if installed.
6. Remove harness connectors -1 to 4- from bracket at left of bulkhead.
7. Disconnect electrical harness connectors -1- and -4-.
8. Expose oxygen sensor wires.
9. Remove bracket for harness connectors.
10. Remove harness connectors -1 to 4- from bracket at right of bulkhead.
11. Disconnect electrical harness connectors -1-, -3- and -4-.
12. Expose oxygen sensor wires.
13. Remove bracket for harness connectors.
14. Remove nut -2- for left exhaust pipe/exhaust manifold which is accessible from top.
15. Remove nut -2- for right exhaust pipe/exhaust manifold which is accessible from top.
16. Disconnect coolant hoses to heater core at rear coolant pipe and at right coolant pipe. To do so, remove wiring harness screw clip on the right side of the vehicle.
17. Remove upper mounting bolts for engine/transmission. One bolt remains tightened by hand.
18. Remove front engine cover (arrows).
19. Swing ribbed belt tensioner in direction of arrow to release tension on ribbed belt using 3299 ribbed belt installation tool and 3299/1 claw for tensioner.
20. Remove ribbed belt from pulley of power steering pump.
21. Place engine oil drip tray beneath engine.
22. Drain engine oil.
23. Remove oil filter -2-.
24. Place VAG1306 Drip Tray beneath engine.
25. Remove coolant hose -3- from oil cooler.
26. Remove oil cooler -1-.
27. Unbolt bracket for refrigerant line at oil pan (arrow). NOTE: Depicted in illustration for a vehicle with manual transmission.
28. Disconnect harness connector -1- of electrical wire to clutch for A/C compressor. WARNING: Do not open refrigerant circuit for A/C system.
29. Unbolt A/C compressor from bracket (arrows).
30. Hang A/C compressor together with condenser with connected lines at right side of vehicle.
31. Disconnect electrical lines from generator.
32. Unscrew bolts (arrows) and remove generator.
33. Remove left and right heat shields for drive axles -1-.
34. Remove electrical wires -1- and -2- from starter.
35. Disconnect Ground (GND) wire -3-.
36. Remove heat shield -1- from magnetic switch.
37. Unscrew bolts -2- and -3- and remove starter.

Scheme 60

Scheme 61

1. Unscrew 3 Torx bolts (arrow) of torque converter in the opening of the removed starter (turn crankshaft 1/3 rotation in each case). NOTE: To loosen the torque converter bolts counterhold the main harmonic balancer bolt.
2. Remove front vehicle floor crossmember -1- to -4-.

All

Note. Flex joint in front exhaust pipe must not be bent more than 10°, otherwise it may be damaged.

Scheme 62

Scheme 63

Scheme 64

Scheme 65

1. Disconnect exhaust system at double clamps -arrows-.
2. Remove nuts -1- and -3- for front exhaust pipe/left exhaust manifold which are accessible from bottom. NOTE: Illustration is shown with engine removed.
3. Pull front exhaust pipe off of left exhaust manifold.
4. Remove nuts -1- and -3- for front exhaust pipe/right exhaust manifold which are accessible from bottom. NOTE: (Scheme 67) is shown with engine removed.
5. Pull front exhaust pipe off of right exhaust manifold.
6. Where installed, unbolt heat shield for engine speed (RPM) sensor.
7. Remove Engine Speed (RPM) sensor -G28- on left of transmission (arrow) and lay to side.

Scheme 66

Scheme 67

1. Disconnect harness connector for back-up light switch at right of transmission and set aside electrical wire. NOTE: Depicted in illustration for a vehicle with manual transmission 01E all wheel drive.
2. Disconnect harness connector (arrow) from Speedometer Vehicle Speed Sensor (VSS) -G22- at left of transmission. NOTE: Depicted in illustration for a vehicle with manual transmission 01E all wheel drive.

Scheme 68

1. Disengage harness connector -A- in direction of arrow and disconnect it from transmission.
2. Move wiring harness clear.

Scheme 69

1. Swing securing lever and disconnect harness connector for transmission wiring harness -1-.
2. Disconnect harness connector -2- on Speedometer Vehicle Speed Sensor (VSS) -G22-.
3. Disconnect harness connector -3- from wire for multifunction switch.

Scheme 70

Scheme 71

Scheme 72

Scheme 73

Scheme 74

1. Mark installation positions for threaded assemblies -1- and positioning sleeves -2-. NOTE: Different mounting holes are available depending upon the installed engine.
2. Remove lower nuts -1- on left and right engine mounts.
3. Slightly loosen upper nuts (arrow) on left and right engine mounts.
4. Unbolt torque support (arrows).
5. Tighten T10062 support on the threaded holes for torque support to 20 Nm.
6. Lift engine using VAG1383A engine/gearbox jack just far enough so that the lower connecting bolts at engine/transmission can be removed. NOTE: When working on a vehicle with all wheel drive, make sure the front constant velocity joint of driveshaft is not damaged when lifting engine.
7. Remove bottom engine/transmission connecting bolts (arrows).
8. Lower engine again.

Scheme 75

1. Position 10-222A engine support bridge on bolted flanges of fenders behind gas-filled strut. Spindle is at front.
2. Hook 3147 engine support adapter into bolt hole at left of transmission housing.
3. Connect 3147 engine support adapter and 10222A engine support bridge with 10222A/2 additional hook.

Note. see scheme 79 is shown with engine removed. If the engine support adapter 3147 can not be inserted far enough into the hole on transmission bell housing due to a change in wire routing, use a long bolt M10 and additional hook 10-222 A/2 in place of engine support adapter.

Scheme 76

1. Position 10-222A engine support bridge on bolted flanges of fenders behind gas-filled strut. Spindle is at front.
2. Hook 3147 engine support adapter into middle bolt hole in transmission housing.
3. Connect engine support adapter 3147 using engine support bridge 10-222 A. NOTE: Illustration is shown with engine removed.

Scheme 77

1. Hook in 2024A engine sling at engine and at VAS6100 or 1202A workshop crane as depicted in illustration. NOTE: To properly balance assembly, mounting hooks must be inserted in rails as shown in illustration. WARNING: Take-up hooks and pins at engine sling must be secured using securing pins (arrows) as shown in illustration.
2. Remove final mounting bolt. NOTE: Verify that all hoses and lines between engine and body have been disconnected.
3. Using VAS6100 or VAG1202A workshop crane, lift engine far enough until the threaded bolts of the engine mount are free.
4. Turn 10-222A engine support bridge shaft. NOTE: Make sure no lines are damaged at bulkhead.