2. The main belt and the air conditioning compressor drive belt are poly V-belts, while the cooling system pump drive belt on engines other than AHL is V-ribbed in section.
3. On all engines, the tension of the main belt is automatic, with a spring-loaded roller. If an air conditioner is provided, its belt tension is made with a torque wrench. On engines other than AHL, water pump drive belt tension adjustment is not required.
4. To remove the drive belts, apply the handbrake, raise the front of the vehicle and install the jack stands. Remove the bottom protective casing of the power unit.
Withdrawal
5. If the belt is to be installed backwards, mark the direction of rotation on it.
6. Although there is no urgent need. access can be improved by sliding the entire front panel (together with the hood latch bracket assembly) forward of the engine as far as possible. Do not disconnect the radiator hoses and electrical wiring. To do this, first remove the front bumper as described in chapter 11, unscrew three quick-release clips from the soundproofing panel, dismantle the air duct between the lock bracket and the air filter. To the left of the radiator, disconnect the wiring from the fasteners. Unscrew the bolts securing the lock bracket to the body side member, unscrew the upper bolts that are behind the headlights. Together with an assistant, take the entire assembly as far away from the car as possible. Audi mechanics use special brackets, however, you can make homemade ones from threaded rods by screwing them into the side members.
7. On A/C models, loosen the tensioner bolts and move the pulley up to loosen the belt. Pull the belt off the crankshaft, compressor and tensioner pulleys.
8. To remove the main belt, you need to loosen the automatic tensioner and fix it with a suitable pin. Using an open end wrench, turn the tensioner clockwise until the holes line up and insert a metal pin, bolt, or drill shank to lock the tensioner in position. Remove the belt from the pulleys of the crankshaft, generator, viscous fan and power steering pump (pic. b.8, a, b).
9. To remove the water pump drive belt (installed on engines other than AHL), fix the power steering pump pulley with a screwdriver, inserting it from the back of the pump, unscrew the bolts securing the pulley to the water pump. Remove the drive belt, as well as both halves of the pulley (pic. 6.9, a-c).
Note: Before removing the belt, find out. it is somewhat loosened - there is no adjustment, the tension is provided by replacing the belt with a new one.
Installation
10. On engines other than AHL, lay the belt on the water pump pulley, assemble the two halves of the pulley together and install the mounting bolts. Squeeze the halves together. simultaneously turning the pulleys and progressively tightening the bolts. The belt must not be allowed to pinch between the pulley halves. Finally, tighten the fastening bolts to the prescribed torque.
11. Lay the main belt on the pulleys, then first turn the tensioner clockwise and remove the locking pin. Release the tensioner so that the belt is automatically tensioned Check that the belt is correctly laid on the pulleys.
12. On models with air conditioning, place the belt over the compressor and crankshaft pulleys. Move the tensioner pulley down and align the belt with the pulley grooves. Tension the belt by applying a force of 25 Nm to the hexagon on the tensioner housing. While holding this moment, tighten the axle and adjusting bolts.
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