Removal, installation and belt tension. Engine M52
Drive the coolant pump with a viscous clutch and generator made by the crankshaft via a V-belt. In the presence of his air conditioner compressor is driven by an additional belt. Belts are consecutive. To remove the previous long belt to be removed.


V-belt must be replaced if:
a) fragility of the belt and the formation of cracks.
b) picture noise (eg due to lubrication).
c) the type of damage: transverse cracks in the frame, the frame breakages, deposits of dirt and small stones between the frame elements razlohmachivanii or side wear rubber frame.
Warning: If you remove the belt will be re-used, it is necessary to maintain the direction of its rotation. Before removing the belt direction of rotation should be noted chalk.
Replacing the V-belt air conditioning compressor, the BMW 5 E39, 520i, 523i, 528i
cooling compressor is driven by a wide V-belt tension is done automatically.
1. Lift and establish the car on supports. Unscrew and remove the lower trim of the engine compartment.
2. Replace the tensioner pulley bolt Allen key. Slow rotation clockwise hydraulic tensioning element (1) is compressed. Remove the V-belt. See the accompanying illustration.
Изображение
3. Fit the new belt according to the scheme installation. At the same time as the tension roller when removing turn completely right. Make sure the belt installation.
4. Unload tensioner by loosening the Allen key. The strength of the belt tensioning pulley is not adjustable.
5. Install the lower engine compartment lining. Lower the car on wheels.
V-belt drives the alternator, water pump and power steering pump.
Replacing the V-belt:
1. Remove fan clutch with fan.
2. Remove the cover from the tensioning pulley. See the accompanying illustration.
Изображение
3. Insert the Allen key in the screw on the tension roller. Slowly turning clockwise, squeeze the hydraulic tensioner. Remove the V-belt.
Изображение
4. Put the new belt according to the scheme installation. At the same time as the tension roller when removing turn completely right. Make sure the belt installation.
Изображение
5. Unload tensioner by loosening the Allen key. The strength of the belt tensioning pulley is not adjustable. Install the fan clutch with fan.