176719 Removing and installing bracket for oil/water heat exchanger
WM 176719 Removing and installing bracket for oil/water heat exchanger
Tools
Technical values
Preliminary work
WARNING
Hot fluid
- Danger of scalding
-> Let the fluid cool down.
-> Wear personal protective gear.
DANGER
Vehicle can fall down
- Risk of squashing or crushing
- Risk of damage to the vehicle
-> Do not place any solid objects under the raised vehicle.
-> Ensure that the lifting platform is prevented from lowering.
-> Remove solid objects before lowering the vehicle.
-> Raise the vehicle only at the jacking points provided.
-> The outer jacking points should be used primarily.
1. Raise the vehicle.
-> 4X00IN01 Lifting the vehicle
2. Allow engine to cool down.
3. Place protective covers on the vehicle to avoid damaging the body and passenger compartment.
4. Remove air cleaner housing.
-> 242519 Removing and installing air cleaner housing - section on "Removing"
5. Lower the engine.
5.1. Support the engine at the oil pan using hydraulic garage jack H 2 SL WE 1032 and transmission jack plate of transmission jack V.A.G. 1383 A WE 1082.
5.2. Loosen and unscrew two special M12 nuts (internal Torx, screw insert T55) -1- on the engine mounting (hydraulic mount) at the left and right.
Engine carrier to engine mounting on cylinder bank 4-6 (view from below)
5.3. Lower the engine with the jack by max. 40 mm.
6. Remove resonance tube.
-> 247419 Removing and installing resonance tube - section on "Removing"
7. Remove intake-air distributor pipe on cylinder bank 4-6.
-> 244619 Removing and installing intake-air distributor - section on "Removing"
8. Remove air conditioning compressor and set it aside.
-> 873419 Removing and installing air conditioning compressor - section on "Removing" 873419 Removing and installing air conditioning compressor
9. Remove underbody panels at the rear and left.
-> 519319 Removing and installing cover for centre underbody - section on "Removing" 519319 Removing and Installing Cover for Centre Underbody
-> 519419 Removing and installing cover for rear underbody - section on "Removing" 519419 Removing and Installing Cover for Rear Underbody
10. Drain engine oil.
-> 170155 Changing engine oil and oil filter
11. Remove hydraulic return line.
11.1. Disconnect hydraulic return line at the reservoir -centre arrow- for the hydraulic pump (release and pull it out at the same time).
Disassembly tool, universal NR.21
If you do not have a special tool to hand, press the circlip -centre arrow- forward using two plastic spatulas or an open-ended wrench (a/f 12) and pull the return line -right arrow- out at the same time.
Return line and holder on pump
11.2. Pull hydraulic return line -3- out of the holder on the oil/water heat exchanger and set it aside.
Hydraulic lines
12. Remove oil separator and set it aside.
-> 105519 Removing and installing oil separator - section on "Removing" .
Removing bracket for oil/water heat exchanger
Information
- The bracket for the oil/water heat exchanger must not be removed at an angle or levered off at one side.
- The bracket's aluminium supports can break off in the crankcase.
1. Remove the high-pressure connecting line.
High-pressure connecting line
1.1. Loosen holder for the high-pressure connecting line -1- by unscrewing two external Torx screws (E10, M6 x 16) -2, 3-.
1.2. Loosen and unscrew union nuts -4- on the high-pressure connecting line -1- at the fuel collection pipes.
1.3. Remove the high-pressure connecting line -1-.
2. Disconnect coolant hoses on the heat exchanger.
Coolant hoses on heat exchanger
2.1. Clamp off coolant hoses using hose clamps.
2.2. Loosen spring band clamps -1-.
2.3. Pull off coolant hoses -2- and set them aside.
3. Remove bracket for oil/water heat exchanger.
Bracket for oil/water heat exchanger
3.1. Loosen and unscrew six external Torx screws (E10, M6 x 45) -1- and one external Torx screw (E10, M6 x 60) -2- on the bracket for the oil/water heat exchanger.
3.2.
3.3. Remove bracket for oil/water heat exchanger -3- from the crankcase.
3.4. Collect any drops of fluid with a clean cloth and clean the sealing faces.
3.5. Close off the bores with suitable stoppers.
4. Remove oil/water heat exchanger.
Unscrew six internal Torx screws (T30, M6 x 20) and remove the heat exchanger.
5. Replace O-rings.
Installing bracket for oil/water heat exchanger
1. Remove stoppers from the bores.
2. Replace O-rings.
Grease and fit new O-rings with Kluber Syntheso Glep grease (Porsche Part No. 000.043.204.68).
3. Fit oil/water heat exchanger.
Screw in and tighten six internal Torx screws (T30) M6 x 20.
=> Tightening torque: 10 Nm (7.5 ftlb.)
4. Install bracket for oil/water heat exchanger.
Bracket for oil/water heat exchanger
4.1. Carefully fit bracket for oil/water heat exchanger -3-.
4.2. Fit and tighten six external Torx screws (E10) M6 x 45 -1- and one external Torx screw (E10) M6 x 60 -2-.
=> Tightening torque: 13 Nm (9.5 ftlb.)
5. Connect coolant hoses on the heat exchanger.
Coolant hoses on heat exchanger
5.1. Connect coolant hoses -2- on the heat exchanger.
5.2. Secure spring band clamps on coolant hoses -1-.
6. Install high-pressure connecting line.
Observe tightening specifications:
-> 243019 Removing and installing fuel collection pipe with fuel injectors - section on "Installing"
High-pressure line to connecting line
6.1. Fit the high-pressure connecting line -1- between the fuel collection pipes.
6.2. Screw on and tighten union nuts -4- securing the high-pressure connecting line to the fuel rails.
=> Tightening torque: 25 Nm (19 ftlb.)+/-3 Nm (+/-2 ftlb.)
6.3. Secure holder for the high-pressure connecting line -1- by screwing in and tightening two external Torx screws (E10, M6 x 16) -2, 3-.
=> Tightening torque: 10 Nm (7.5 ftlb.)
Subsequent work
1. Install oil separator.
-> 105519 Removing and installing oil separator - section on "Installing" .
2. Fit hydraulic return line.
2.1. Insert hydraulic return line -3- into the holder on the oil/water heat exchanger.
Hydraulic lines
2.2. Connect hydraulic return line to the reservoir for the hydraulic pump -arrow-.
Hydraulic pump return line
3. Raise the engine.
3.1. Support the engine at the oil pan using hydraulic garage jack H 2 SL WE 1032 and transmission jack plate of transmission jack V.A.G. 1383 A WE 1082.
3.2. Slowly raise the engine using the jack.
3.3. Tighten two special M12 nuts (internal Torx, screw insert T55) -1- on the engine mounting (hydraulic mount) at the left and right.
Engine carrier to engine mounting on cylinder bank 4-6 (view from below)
=> Tightening torque: 85 Nm (63 ftlb.)
CAUTION
Incorrect oil level
- Damage to engine and catalytic converter.
-> Always observe specification for oil fill quantities.
4. Check the engine-oil level and top up if necessary.
-> 170101 Checking engine-oil level
5. Install air conditioning compressor.
-> 873419 Removing and installing air conditioning compressor - section on "Installing" 873419 Removing and installing air conditioning compressor
6. Check the engine coolant level and top up if necessary.
7. Install intake-air distributor pipe on cylinder bank 4-6.
-> 244619 Removing and installing intake-air distributor - section on "Installing"
8. Install resonance tube.
-> 247419 Removing and installing resonance tube - section on "Installing"
9. Install air cleaner housing.
-> 242519 Removing and installing air cleaner housing - section on "Installing"
10. Let the engine run until warm and check for leaks.
11. Install underbody panels at the left and rear.
-> 519319 Removing and installing cover for centre underbody - section on "Installing" 519319 Removing and Installing Cover for Centre Underbody
-> 519419 Removing and installing cover for rear underbody - section on "Installing" 519419 Removing and Installing Cover for Rear Underbody