4-cylinder engine with air conditioning
The air conditioner is driven by a separate belt.
Remove the lower mudguard of the engine compartment.
When reinstalling the belt, use a marker or paint to mark the direction of rotation with an arrow.
Loosen the screws securing the poly V-belt tensioning mechanism, and after loosening the tension of the V-ribbed belt, remove it from the pulleys (see fig. 2.73).
![](https://www.audimanual.ru/img/a6/0362.jpg)
Installation
Install the V-ribbed belt on the pulleys. When reinstalling the V-ribbed belt, install it in accordance with the previously marked arrow.
Check that the V-ribbed belt is correctly positioned on the pulleys.
Install the torque wrench on the V-ribbed belt tensioner bracket and turn it to 25 Nm and tighten bolts A in this position (pic. 2.74) tension mechanism.
![](https://www.audimanual.ru/img/a6/0363.jpg)
Install the lower engine compartment mudguard.
Engine 1.8-I (125/150 HP)
Power steering pump drive belt, alternator and radiator fan
Remove the lower mudguard of the engine compartment.
When reinstalling the belt, use a marker or paint to mark the direction of rotation with an arrow.
If equipped, remove the A/C drive belt.
Set the front panel of the engine compartment to the service position.
Use a wrench to loosen the belt tension by turning the tensioner clockwise and fix it with a steel rod AUDI-3204 with a diameter of 5 mm (see fig. 2.75).
![](https://www.audimanual.ru/img/a6/0364.jpg)
Remove the belt from the pulleys.
Installation
The water pump is driven either by a toothed belt or an additional thin V-belt.
Install the V-ribbed belt on the engine pulleys. When reinstalling the belt, install it in accordance with the previously marked arrow.
Using a wrench, press the belt tensioner in a clockwise direction and remove the AUDI-3204 steel rod that locks the tensioner (see fig. 2.75). Slowly release the belt tensioner and the belt will automatically tension.
Establish the forward panel of a motor compartment in normal position.
Install the lower engine compartment mudguard.
Start the engine and check the operation of the belts.
Engine 1.9-I-TDI
Poly V-belt for power steering pump, alternator, water pump and radiator fan
All operations and instructions for removing and installing the poly-V-belt are similar to the operations for removing and installing the poly-V-belt of engines 1.8-I (125/150 HP). This section describes operations that are unique to the 4-cylinder TDI engine
If equipped, remove the A/C drive belt.
Using a wrench on the head of the bolt, turn the tension roller counterclockwise and remove the belt (see fig. 2.77). The bolt has a left-hand thread, so turning it counterclockwise will not loosen it.
![](https://www.audimanual.ru/img/a6/0366.jpg)
Using a wrench on the head of the bolt, turn the belt tensioner clockwise and install the belt on the pulleys. Slowly release the tension roller, and the belt tension will automatically adjust.
6-cylinder petrol engine
Withdrawal
All operations and instructions for removing and installing the poly-V-belt are similar to the operations for removing and installing the poly-V-belt of engines 1.8-I (125/150 l. With.). This section describes operations that are unique to the 6-cylinder gasoline engine.
Remove the top engine cover.
Set the front panel of the engine compartment to the service position.
Using a special key AUDI-3212, while holding the radiator fan pulley from turning, unscrew the bolt securing the pulley with an open-end wrench AUDI-3312. Keep in mind that the bolt has a left-hand thread, so to unscrew it, it must be rotated clockwise (see fig. 2.78).
![](https://www.audimanual.ru/img/a6/0367.jpg)
Turn the belt tensioner clockwise with a wrench until the holes line up. Lock the tensioner in this position by inserting a 5 mm diameter steel rod into the hole (see fig. 2.79).
![](https://www.audimanual.ru/img/a6/0368.jpg)
Installation
Fit the V-ribbed belt in a counterclockwise direction, first on the crankshaft pulley, and lastly on the tensioner pulley.
Use a wrench to turn the belt tensioner counterclockwise and remove the steel rod that secures the tensioner. Slowly release the wrench and the belt will automatically tension.
Install the radiator fan pulley and secure it with the bolt, tightening it to 70 Nm. When using the AUDI-3312 key, tighten the bolt to 40 Nm.
Attention. The radiator fan pulley bolt has a left-hand thread, so the bolt must be tightened by turning it counterclockwise.
Note. On vehicles without air conditioning, the auxiliary drive belt is installed from pulley 6 to pulley 4.
Establish the forward panel of a motor compartment in normal position.
Install the engine top cover.
6-cylinder TDI engine
Withdrawal
All operations and instructions for removing and installing the poly-V-belt are similar to the operations for removing and installing the poly-V-belt of engines 1.8-I (125/150 HP). This section describes operations that are unique to the 6-cylinder TDI engine.
Remove the front bumper.
Cars with air conditioning. After removing the front bumper, unscrew the bolt securing the air conditioning pipe (see fig. 2.63). Do not disconnect the air conditioning pipes.
Set the front panel of the engine compartment to the service position.
Unscrew the viscous-coupled radiator fan mounting bolt, while holding the fan shaft from turning with an additional wrench (see fig. 2.81).
![](https://www.audimanual.ru/img/a6/0370.jpg)
Unscrew the screws and remove the engine cover (see fig. 2.82).
![](https://www.audimanual.ru/img/a6/0371.jpg)
Unscrew the screws and remove the V-ribbed belt cover (see fig. 2.83).
![](https://www.audimanual.ru/img/a6/0372.jpg)
Cars with air conditioning. Remove bolt A (pic. 2.86) fastening the tension mechanism, loosen the tension and remove the air conditioner drive belt.
![](https://www.audimanual.ru/img/a6/0375.jpg)
Using a socket wrench, turn the main V-ribbed belt tensioner counterclockwise, as a result of which the belt tension will loosen, fix the tensioner in this position with pin 1 (pic. 2.84) and remove the belt.
![](https://www.audimanual.ru/img/a6/0373.jpg)
Installation
Put on the V-ribbed belt in a counterclockwise direction, first of all on the crankshaft pulley, and lastly on the tension roller (see fig. 2.85).
![](https://www.audimanual.ru/img/a6/0374.jpg)
Cars with air conditioning. Torque wrench with 8mm hex head C (pic. 2.86) turn the tension roller of the V-ribbed belt of the air conditioning compressor counterclockwise to a torque of 7 Nm, and, holding the torque wrench in this position, tighten the bolt A of the fastening of the V-ribbed belt tension roller to 25 Nm with the second wrench.
Install poly V-belt cover (see fig. 2.83).
Install the engine cover (see fig. 2.82).
Install the radiator fan pulley and secure it with a bolt, while holding the sleeve from turning with the second key.
Establish the forward panel of a motor compartment in normal position.
Cars with air conditioning
Before installing the front bumper, screw the air conditioning pipe mounting bolt (see fig. 2.63).
Install the front bumper.
![](https://www.audimanual.ru/img/a6/0369-ne.jpg)
![](https://www.audimanual.ru/img/a6/0365-neeee.jpg)
Pic. 2.76. Location of belts on gasoline engines 1.84 (1251150 hp)
1 - belt tension mechanism,
2 - generator,
3 - fan,
4 - water pump,
5 - power steering pump,
6 - water pump belt,
7 - fan and generator power steering belt,
8 - vibration damper,
9 - air conditioning compressor belt tensioner,
10 - air conditioning compressor belt,
11 - air conditioning compressor
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