Engine, removing: Notes
NOTE:
- All cable ties opened or cut during engine removal must be reinstalled at the same locations.
- Remove engine without transmission toward the front.
- Drained coolant must be stored in a clean container for disposal or reuse.
- Always replace seals and gaskets.
- Do not open coolant circulation system.
See Caution before beginning repairs on the electrical system under ENGINE, REMOVING AND INSTALLING .
- Remove plenum cover.
- Switch ignition off and disconnect battery Ground (GND) strap.
- Remove bolts (arrows) and remove engine covers -A- and -C-.
- Remove cover above air filter.
- Remove sound-proofing material (arrows).
- Remove bracket for sound-proofing at unit support.
- Drain engine coolant. See COOLING SYSTEM, DRAINING AND FILLING .
- Remove bumper:
See FRONT BUMPER .
- Remove lock carrier:
- Remove viscous fan counter-hold using 3212 wrench.NOTE: The viscous fan has a LEFT-HANDED thread.
- Mark direction of rotation of ribbed belt
- To loosen ribbed belt, turn clockwise using 17 mm box wrench until two holes are aligned (arrow). Counter-hold in position using 3204 drift.NOTE: Mark direction of rotation of ribbed belt. Reversing the direction in which it runs can ruin it.
- Remove ribbed belt.
- Cut coolant hoses -1- and -2-
- Remove coolant reservoir (arrows).
- Disconnect connector for coolant level display.
- Remove valve cover (cylinder bank 4-6).
- Remove hose -1- to vacuum reservoir.
- Remove air distributor (arrows).
WARNING: Fuel system is under pressure! Before opening the system place a rag around the connection. Then release pressure by carefully loosening the connection.
- Disconnect fuel supply and return lines -1- and -2- and move aside.
- Remove hose from Evaporative Emission (EVAP) canister purge regulator valve -3-.
- Disconnect connector -1- at Mass Air Flow (MAF) sensor. See Fig 9
- Disconnect connectors -2- from power output stage and move cables aside.
- Remove air filter.
- Disconnect connector -1- for oxygen sensor at bulkhead. See Fig 10.
- Disconnect connector -2- for knock sensor.
- Disconnect harness connector -3-.
- Move cables clear.
- Remove pressure hoses (arrows) from charge air cooler to left and right pressure lines.
Courtesy of AUDI OF AMERICA, INC.
See Caution before beginning repairs on the electrical system under ENGINE, REMOVING AND INSTALLING .
- Disconnect cable at B+ on battery.
- Disconnect B+ battery cable.
- Move cables to starter aside together with cable channels (arrows).
- Remove pressure lines -1-.NOTE: Watch position of retaining strips -2-.
- Disconnect hose from power steering reservoir to power steering pump with special tool 3094. See Fig 14.
- Disconnect power steering hose (arrow).
- Disconnect hydraulic line (arrow).
- Disconnect harness connector from vehicle speed sensor.
- Disconnect harness connector from reverse gear switch.
- Unscrew heat sensor -1- from right-hand turbocharger using 3035.
- Detach heat shield -2- from left and right turbochargers.
- Unscrew upper bolts -3- from front exhaust pipes at left and right turbochargers.
- Remove wiper arms (arrows).
- Disconnect retaining clip -1- at water deflector.
- Pull off left and right retaining clips -3- on water deflector.
- Remove water deflector.
- Remove cover -2- from E-box (electronics box).
- Open E-box in plenum.
- Unclip ECM retaining bracket.
- Remove ECM, disconnect harness connectors -2- and -3- and remove.
- Disconnect harness connectors -1-.
- Remove hose -1- to power brake booster at bulkhead.
- Disconnect ground (GND) -3-. See Fig 19.
- Disconnect connectors -2- and -5- at bulkhead and remove lower part of connectors from bracket.
- Pull connector -4- out of bracket and move wiring clear.
- Remove bracket for cable plug.
- Remove both coolant hoses to heat exchanger at engine by un-clipping retaining clips on flange.
- Remove both coolant hoses to heat exchanger at engine by un-clipping retaining clips on flange.
- Release hose clamp -arrow-.
- Remove intake line -1-.
- Remove water line -2-.
- Remove pressure hoses -arrows- between turbocharger and charge air cooler (left and right sides).
- Move aside cable -1- to starter by cutting cable tie and unclipping bracket (arrow).
- Remove hose -2- for cooling generator.
- Disconnect ground (GND) (arrow) from engine support.
- Remove torque support -1-.
- Remove hose clamps (arrows).
- Remove coolant line -2-. See Fig 24.
- Place VAG 1306 Drip Tray beneath engine.
- Remove oil filter.
- Remove hose clamps (arrow).
- Remove oil cooler -1-.
- Remove heat shield (arrows) above left and right drive axle to transmission.
- Remove hose clamp -1- from left and right heat shield for turbocharger.
- Unbolt left and right exhaust pipes -2- from turbocharger.
- Detach air conditioner line from oil pan -arrow-.CAUTION: Do not open the refrigerant circuit of the AC system.
- Remove A/C compressor -1...2-.
- Attach A/C compressor (with refrigerant hoses attached) to vehicle using wire.
NOTE:
- When installing pay attention to guide bushings.
- When installing first insert bolt -1- in A/C compressor.
- Do not bend or stretch lines or hoses as condenser and/or refrigerant lines/hoses may be damaged.
Vehicles with automatic transmission:
- Remove right charge air cooler by disconnecting upper hose connection; charge air cooler supported in 3x rubber bearings.
- Disconnect air guide at generator support -3-.
- Unbolt cable at terminal 30/B+ -1-. Tightening torque: 16 Nm
- Unbolt cable at terminal D+ -2-. Tightening torque: 4 Nm
- Remove hex socket bolt -1-, retaining nut -2-. Tightening torque: 45 Nm. See Fig 31.
- Remove bolt -3-. Tightening torque: 22 Nm
- Remove generator -4- downward and out.
- - Remove air intake -1-.
- - Securing points for oil and A/C lines
- - Securing point to engine block
- - Remove hose clamp
- Unbolt cable for terminal 30/B+ -1-. Tightening torque: 16 Nm
- Disconnect connector for terminal 50 -2-.
- Remove right wheel.
- Remove upper bolt -1- through right wheelhousing. Tightening torque: 65 Nm. See Fig 34.
- Remove lower bolt from engine side. Tightening torque: 65 Nm
- Remove starter forward and out.
- Using special tool V175 disconnect torque converter from drive plate.