If there are cracks, tears and delaminations of rubber from the fabric base on the belts, the belts must be replaced.
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The layout of the drive auxiliary units of the car with air conditioning.
1 - a pulley of a drive of auxiliary units; 2 - a pulley of the generator; 3 - a directing roller; 4 - a tension roller; 5 - a pulley of the pump of a cooling liquid; 6 - a belt of a drive of auxiliary units; 7 - a pulley of the compressor of the conditioner
The auxiliary drive pulley through the belt transmits the rotation to the pulleys of the generator, coolant pump and air conditioning compressor. The guide and tension rollers are used to change the trace of the belt and ensure the correct tension. An increased width pulley is mounted on the shaft of the coolant pump, which drives the power steering pump through a separate belt.
Depending on the vehicle equipment, there are two options for auxiliary units drive schemes: with and without air conditioning.
Work is shown on an air-conditioned car.
We carry out work on a viewing ditch or overpass.
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If we remove the drive belt for the power steering pump for replacement, then cut the belt with a knife.
If the belt is not removed for replacement (for example, to remove or replace another drive belt of auxiliary units), we engage the highest gear in the gearbox and push the car back until the holes in the pump pulley coincide with the pump mounting screws.
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Through the holes in the pump pulley with the hexagon “8”, we loosen the tightening of the three pump mounting screws.
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Having engaged the highest gear in the gearbox, push the car back and shift the belt from the power steering pump pulley.
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Having removed a belt from a pulley of the pump of a cooling liquid, we take out a belt from a motor compartment.
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Marking belt 4РК 643 (four-ribbed, length 643 mm).
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We put on a new belt on the coolant pump pulley and, pushing the car back (with the highest gear engaged), put on the belt on the power steering pump pulley.
Tighten the pump mounting screws.
To check the condition of another belt (coolant pump drive, air conditioning compressor and generator), remove the right wheel and the right mud guard of the engine compartment.
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Using the “17” head, crank the crankshaft by the bolt securing the pulley of the auxiliary units clockwise and inspect the belt along its entire length.
If cracks, tears and delaminations of rubber from the fabric base are found on the belt, the belt must be replaced. To do this, first remove the drive belt for the power steering pump.
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To weaken the tension of the belt, we put a 12-point spanner “19” on the corresponding protrusion of the tensioner and turn the roller bracket counterclockwise, overcoming the resistance of the tensioner spring.
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Remove the belt from the tensioner roller.
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Having removed a belt from pulleys, we take out a belt from a motor compartment.
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Marking of the drive belt of auxiliary units 6РК 1814 (six-ribbed, 1814 mm long).
If the belt is not removed for replacement (for example, when dismantling the generator), before starting work, we mark the direction of rotation of the belt.
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To replace the tensioner (for example, if the spring breaks) with the “15” head, we unscrew the tensioner mounting bolt.
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We take out the bolt and remove the tensioner.
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Stretching device.
We install the tensioner and the drive belt of auxiliary units in the reverse order.
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In this case, the protrusion on the housing of the tensioner should enter the recess in the socket.