Porshe 911 (997). Manual - part 7

Preparations for removing the engine

Note

Take care to maintain access to the screws for the diagonal struts in the vicinity of the rear jacking
points.

• 

DANGER

Incorrect raising of the vehicle

Damage to person or property caused by the car falling down

• 

→ Raise the vehicle at the prescribed jacking points.

1. Place jacks under the vehicle at the prescribed jacking points. →  Raise the vehicle.

2. Use PIWIS tester to read out error memory → Self diagnosis.

3. Position protective supports on the body to avoid

damage.

4. Disconnect battery and cover up battery or contacts →  Work instructions for disconnecting battery.

5. Remove both rear wheels. Use the specified special tool socket wrench insert 300 to avoid

damage to the wheel rims → 440520 21 Removing and installing wheel - removing.

6. Remove rear apron →  21 Removing and installing rear apron - removing.

7. Removing side retaining frames (heat shields), left and right →  21 Removing and installing rear bumper -

removal.

Rear spoiler support

8. Undo support holding rear spoiler to body -2- . Turn the support towards the brake disc.

9. Remove cover for rear and centre underbody→ 5190 21 Removing and installing underside panel -

removal.

Diagnostic system: reading out fault memory and activating systems

Preparations for removing the engine

185

Removing engine

Removing engine

WARNING

Danger of injury from hot engine parts.

Risk of burns, damage to skin, injury to the eyes.

• 

→ Do not work on the engine while it is

hot.

1. Remove the air cleaner housing completely → Removing air cleaner housing.

Reservoir cap for coolant expansion tank

2. Open reservoir cap on coolant expansion tank -1- , fold up bleeder valve -2- .

coolant feed line (Henn coupling) to engine

WARNING

Coolant is hazardous to health

Irration of skin

• 

→ Wear protective gloves and goggles

→ In case of contact with the skin or eyes, wash immediately with plenty of water!

Diagnostic system: reading out fault memory and activating systems

 Removing engine

186

3. Drain coolant →  AC Draining and filling coolant - filling.

3.1. Open coolant drain plug and refit with new sealing ring → Tightening torque: 10 (7.5 ftlb.) Nm

3.2. Open coolant feed line (Henn coupling) to engine at underbody and reconnect.

3.3. Heating supply and return lines (open spring band clamps in direction of

radiator)

Left engine compartment line connections

4. Open line connections in engine compartment.

4.1. Loosen the vacuum lines for the brake booster -1- . For the tandem pump feed line, remove the plastic

protection, push the holder forward and pull off the line. Immediately put plastic protection back in
place.

4.2. Disconnect tank vent line -2- . In order to do this, press the lugs of the rapid-action coupling and

pull off the line.

4.3. Disconnect bleeder hose from coolant expansion tank -3- .

Coolant pump coolant feeder hose

Note

The spring band clamp is vulcanised on the coolant supply hose of the coolant expansion tank to the
engine! The vulcanisation diminishes after the clamp has been opened and tightened several times.
Therefore do not pull off as this could damage the hose.

• 

5. Disconnect coolant pump feeder hose -1- . Open spring band clamp -2- and pull off the

hose.

Diagnostic system: reading out fault memory and activating systems

Removing engine

187

Coolant pipe feeder hose

6. Pull off hose from coolant pipe under coolant expansion tank -1- . In order to do this, lift the safety clip on

the Henn coupling out of the lock -Arrow- using a screwdriver and pull out the hose. Plug the opening
with a clean cloth. Put the safety clip back in place after removing the engine

Right coolant pipe hose

7. Pull off tandem pump feeder line -1- and right coolant pipe feeder hose -3- . Open and remove spring

band clamp on vacuum line. After that, lift safety clip on Henn coupling out of the lock -2- , pull off
coolant hose. Plug the opening with a clean cloth. Put the safety clip back in place after removing the
engine

Coolant hose to flat-seat valve

8. In Tiptronic vehicles, pull the coolant hose to the flat-seat valve off the transmission. Clamp shut

hose -Arrow- , open the spring band clamp and pull off the hose. Collect escaping coolant, close
off hose and flat-seat valve with plugs.

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Removing engine

188