Removing and Installing Drive Belt 2
Removing and installing drive beltPreliminary work
1. Remove intake manifold (cowl).
Information
ATTENTION Risk of damage to drive belt!
^ If the drive belt is removed when it is hot, it may become deformed and damaged.
^ Never remove drive belt when it is hot.
ATTENTION Consequential damage of broken pulley belt!
^ Due to a broken drive belt during driving, surrounding components (panelling, electric cables etc.) can be damaged by thrashing or flying belt parts.
^ Parts of the drive belt can jam behind deflection rollers or vibration balancers and damage surfaces and sealing rings there. In particular, the sealing ring of the crankshaft vibration balancer can become leaky as a result of a broken belt.
^ Following a belt breakage the surrounding components and the interior of the engine compartment must be inspected for damage, and if necessary damaged parts (sealing ring of the crankshaft vibration balancer, deflection rollers, panelling, lines, electric cables etc.) repaired or replaced.
^ The reason for the belt breakage must be established. Check deflection rollers or crankshaft vibration balancers for prior damage.
WARNING Danger of injury!
^ The vehicle fans can continue running or start up automatically.
^ The power supply to the radiator fans or the battery must be disconnected before starting to work on the radiator or fans.
^ '9000IN Work instructions after disconnecting the battery'
Removing drive belt - Cayenne S
1. Mark the rolling direction of the drive belt with chalk.
2. Relieve and remove drive belt. To do this, use an open-ended wrench (a/f 30) to turn the belt tensioner clockwise and remove the drive belt from the tensioning roller. Relieve the belt tensioner slowly.
3. Remove the drive belt from all pulleys.
Installing drive belt - Cayenne S
Note: The figure. The pulleys are numbered according to the sequence of fitting.
1. Make the belt into a loop and place over the crankshaft belt pulley behind the dipstick.
2. Place the top part of the belt loop over the coolant pump pulley -1-.
3. Place the lower part of the belt loop around the crankshaft belt pulley at the bottom -2-.
4. Guide the belt section from the coolant pump around the deflector wheel -3- on cylinder bank 5 - 8.
5. Then guide the section of the belt around the air-conditioning compressor belt pulley -4- at the bottom.
6. Lay a loop around the power-steering pump -5-.
7. Lay the loose end of the drive belt from the coolant pump downwards and around the generator pulley -6- and deflector roller -7- of cylinder bank 1 - 4.
8. Gather the belt section between the deflection roller of cylinder bank 1 - 4 and the crankshaft pulley to form a loop and guide it upwards to the tensioning roller -8-. Use a wrench (a/f 30) to turn the tensioning roller -8- in a clockwise direction at the hexagon and put on the drive belt. Slowly relieve the tensioning roller.
9. Check that the drive belt is positioned correctly on the pulleys.
Removing drive belt - Cayenne Turbo
1. Disconnect the positive crankcase ventilation line -1- and the control line -2- of the bypass valves at the disconnection points under the left deflection roller.
2. Mark the rolling direction of the drive belt with chalk.
3. Relieve and remove drive belt. To do this, use an open-ended wrench (a/f 30) to turn the belt tensioner clockwise and remove the drive belt from the tensioning roller. Then relieve the belt tensioner slowly.
4. Remove the drive belt from all pulleys.
Installing drive belt - Cayenne Turbo
Note: The figure. The pulleys are numbered according to the sequence of fitting.
1. Make the belt into a loop and place over the crankshaft belt pulley behind the dipstick.
2. Place the top part of the belt loop over the coolant pump pulley -1-.
3. Place the lower part of the belt loop around the crankshaft belt pulley at the bottom -2-.
4. Guide the belt section from the coolant pump around the deflector wheel -3- on cylinder bank 5 - 8.
5. Then guide the section of the belt around the air conditioning compressor belt pulley -4- at the bottom.
6. Then lay a loop around the power pump -5-.
7. Lay the loose end of the drive belt from the coolant pump downwards and around the generator pulley -6- and deflector roller -7- of cylinder bank 1 - 4.
8. Gather the belt section between the deflector roller of cylinder bank 1 - 4 and the crankshaft pulley to form a loop and guide it upwards to the tensioning roller -8-. Use an open-ended wrench (a/f 30) to turn the tensioning roller -8- clockwise at the hexagon and put on the drive belt. Slowly relieve the tensioning roller.
9. Check that the drive belt is positioned correctly on the pulleys.
10. Connect the positive crankcase ventilation line -1- and the control line -2- of the bypass valves at the disconnection points under the left deflection roller.
Subsequent work
1. Fit intake manifold (cowl).