It is necessary to check the quality and tension of the engine timing belt every time the engine is serviced.

If the belt is loose, the teeth of the belt will quickly wear out, and the belt may jump on the toothed pulleys, which will lead to a violation of the valve timing and can lead to emergency engine damage.

In the absence of special testers, the belt tension can be checked according to the "rule of the thumb", and the deflection can be determined using a ruler.

Проверка и замена ремня ГРМ автомобиля Рено СандероПроверка и замена ремня ГРМ автомобиля Рено Сандеро

According to this rule, the deflection between the centers of the pulleys is from 180 to 280 mm, the deflection should be about 6 mm.

You can also check the approximate tension by twisting the driving strand of the belt along the axis.

If by hand you can twist the branch more than 90˚, the belt is loose.

When examining the belt, you need to pay attention so that there are no cracks, cuts, delamination.

The belt surface must be free of oil traces.

We prepare the car for the task. We install it on a lift or a viewing ditch.

We remove the right support of the power unit for this:

We substitute a jack under the oil pan through a wooden or rubber block.

We remove the fuel pipes from the holders located on the support bracket

Проверка и замена ремня ГРМ автомобиля Рено СандероПроверка и замена ремня ГРМ автомобиля Рено Сандеро

We take out the wiring harness holder from the hole in the support bracket

With a 16 head, unscrew the three bolts securing the support bracket to the top cover of the timing drive

Проверка и замена ремня ГРМ автомобиля Рено СандероПроверка и замена ремня ГРМ автомобиля Рено Сандеро

We unscrew the three bolts securing the support to the body

Remove the right support

Проверка и замена ремня ГРМ автомобиля Рено Сандеро

We remove the right mudguard (article - Removing the protection of the Nissan Almera power unit)

Checking and replacing the belt on the 1.6l K4M engine

Проверка и замена ремня ГРМ автомобиля Рено Сандеро

The location and installation diagram of the belt is shown in Figure 6.

Проверка и замена ремня ГРМ автомобиля Рено СандероПроверка и замена ремня ГРМ автомобиля Рено Сандеро

With a 13 head, unscrew three bolts and two nuts securing the upper timing drive cover

Remove the top cover

Проверка и замена ремня ГРМ автомобиля Рено СандероПроверка и замена ремня ГРМ автомобиля Рено Сандеро

Turn the crankshaft clockwise with a head of 18 and inspect the timing belt

With normal belt tension, pointer 1 should coincide with the groove of pointer 2 of the tension roller

If the movable pointer is displaced relative to the fixed pointer, then tighten the belt.

Проверка и замена ремня ГРМ автомобиля Рено Сандеро

We loosen with a 13 wrench tightening the tension roller mounting nut and with a 6 hexagon turn the roller clockwise, pulling the belt until the pointers align. Holding in this position, tighten the roller nut.

To replace the belt, remove the belt of auxiliary units (Replacing the belt of auxiliary units for Nissan Almera)

Remove the upper timing cover

We turn on the fifth gear and the assistant presses the brake pedal

Проверка и замена ремня ГРМ автомобиля Рено СандероПроверка и замена ремня ГРМ автомобиля Рено Сандеро

With a head of 18, unscrew the bolt securing the accessory drive pulley

Removing the bolt and washer

Проверка и замена ремня ГРМ автомобиля Рено СандероПроверка и замена ремня ГРМ автомобиля Рено Сандеро

Remove the accessory drive pulley

With a head of 8, unscrew the four bolts securing the lower timing drive cover

Remove the cover

We set the crankshaft and camshafts in the position of the top dead center of the first cylinder.

To do this, unscrew all the candles.

We screw the bolt of the accessory drive pulley into place by installing a set of suitable washers.

To determine the position of the camshafts, it is necessary to remove the plugs from the holes in the left end of the cylinder head.

Проверка и замена ремня ГРМ автомобиля Рено Сандеро

Removing the air intake with a resonator

Проверка и замена ремня ГРМ автомобиля Рено СандероПроверка и замена ремня ГРМ автомобиля Рено Сандеро

In the center of the plug, we pierce a hole with a screwdriver

We remove the plug from the hole in the cylinder block. We also extract another stub

Проверка и замена ремня ГРМ автомобиля Рено Сандеро

We turn the crankshaft clockwise, the grooves on the ends of the camshafts should take a horizontal position, and are displaced downward relative to the axes of the camshafts.

To fix the camshafts in this position, you can make a device from a metal plate five millimeters thick.

Проверка и замена ремня ГРМ автомобиля Рено Сандеро

Размеры приспособления показаны на рисунке

Проверка и замена ремня ГРМ автомобиля Рено Сандеро

We install the device in the grooves of the shafts

We check whether the crankshaft is in the TDC position of the pistons of the 1st and 4th cylinders. For this:

Unscrew the plug with the E14 head

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Insert the locating pin into the hole (shown with the pallet removed)

When the crankshaft is in the TDC position of the pistons of the 1st and 4th cylinders, the locating pin 1 must screw into the hole to the end of the thread and rest against the milled area 2 on the crankshaft cheek.

After that, the crankshaft cannot be cranked.

If, when screwing in the adjusting pin, it rests, and the end of the adjusting nut on the pin does not come into contact with the end of the hole boss in the cylinder block (there will be a gap between the nut and the boss), then you need to turn the crankshaft slightly (removing the device from the camshaft grooves) the crankshaft counterclockwise arrows.

Then you need to screw the locating pin into the hole in the cylinder block to the end (until the ends of the nut of the pin and the bore of the hole in the block come into contact) and turn the crankshaft clockwise until the shaft cheek pad stops in the pin.

We install the device for fixing the camshafts, if it was removed.

An M10 bolt can be used as a locating pin

Проверка и замена ремня ГРМ автомобиля Рено Сандеро

We screw two adjusting nuts onto the bolt and lock them so that the length of the threaded part of the bolt is 75 mm.

We turn the roller counterclockwise, reducing the tension of the timing drive

Проверка и замена ремня ГРМ автомобиля Рено СандероПроверка и замена ремня ГРМ автомобиля Рено Сандеро

Remove the belt from the tension roller

Remove the belt from the pulleys of the coolant pump, crankshaft and camshafts

Проверка и замена ремня ГРМ автомобиля Рено Сандеро

Belt marking (number of teeth 131, width 25.4 mm)

Проверка и замена ремня ГРМ автомобиля Рено Сандеро

When replacing the belt, it is advisable to replace the tension and support roller, for this we unscrew the tension roller fastening nut

Проверка и замена ремня ГРМ автомобиля Рено СандероПроверка и замена ремня ГРМ автомобиля Рено Сандеро

Remove the tension roller from the coolant pump housing stud

Using the TORX T50 wrench, unscrew the screw that secures the support roller

Remove the support roller and its sleeve.

Проверка и замена ремня ГРМ автомобиля Рено Сандеро

Installing the timing belt

We orient the belt so that the arrows on the belt coincide with the clockwise direction of the belt.

We install the belt on the toothed pulleys of the crankshaft, coolant pump, camshaft pulleys.

Then, at the same time, we put the belt on the tension roller and install the roller on the stud of the coolant pump housing.

Проверка и замена ремня ГРМ автомобиля Рено Сандеро

When installing the tension roller, insert the bent end 1 of the roller bracket into the recess 2 of the coolant pump housing.

Adjust the belt tension as described above.

We unscrew the locking pin from the hole in the cylinder block and remove the device for fixing the camshafts.

We turn the crankshaft two turns clockwise until the grooves on the camshafts take the position corresponding to the top dead center of the 1st piston.

We twist the plug into the hole in the cylinder block.

Проверка и замена ремня ГРМ автомобиля Рено Сандеро

With light blows of a hammer with a plastic striker, we press new plugs into the holes of the cylinder head.

Putting the parts together in reverse order.

Replace the accessory drive pulley mounting bolt with a new one and tighten it to 40 Nm, then turn it 110˚.

The fastening bolt of the tensioner roller bracket for the accessory drive belt is tightened to a torque of 21 Nm.

Tighten the timing belt support roller bolt to 50 Nm.

Tighten the timing belt tension roller nut with a torque of 28 Nm.

We tighten the M8 bolt of the upper timing drive cover to a torque of 22 Nm.

We tighten the М10 bolt for fastening the upper timing drive cover to a torque of 44 Nm.

Tighten the bolt of the lower timing cover with a torque of 8 Nm.

Replacing the timing belt on the K7J and K7M engine

Проверка и замена ремня ГРМ автомобиля Рено Сандеро

We install the piston of the first cylinder at TDC of the compression stroke and remove the accessory drive pulley and the lower timing belt cover, as described in the article - "Checking and replacing the Renault Sandero accessory drive belt"

Проверка и замена ремня ГРМ автомобиля Рено СандероПроверка и замена ремня ГРМ автомобиля Рено Сандеро

We remember or mark in any way the position of the tension roller relative to the axis, weaken the tightening of the roller fastening nut

We turn the roller clockwise, thereby loosening the tension of the timing belt

Проверка и замена ремня ГРМ автомобиля Рено СандероПроверка и замена ремня ГРМ автомобиля Рено Сандеро

Remove the belt from the water pump toothed pulley

Remove the belt from the camshaft

Проверка и замена ремня ГРМ автомобиля Рено СандероПроверка и замена ремня ГРМ автомобиля Рено Сандеро

Remove the belt from the crankshaft and tension roller

And we take out the belt completely

The original belt should be marked with arrows indicating the direction of its movement when the engine is running.

If there are no such arrows on the belt, then you need to apply them with paint or a felt-tip pen to set the belt in its previous position.

Проверка и замена ремня ГРМ автомобиля Рено СандероПроверка и замена ремня ГРМ автомобиля Рено Сандеро

To replace the tension roller, finally unscrew the nut from its axis

Remove the roller from the hairpin

Проверка и замена ремня ГРМ автомобиля Рено Сандеро

Install the new tensioner roller in reverse order. In this case, the holes for the special key must be directed outward.

Installing the belt

Проверка и замена ремня ГРМ автомобиля Рено Сандеро

First, install the belt on the camshaft toothed pulley, orienting it with the arrows "B" in the direction of travel when the engine is running and combining the risk "A" with the alignment mark on the pulley.

Then we pull the driving branch onto the water pump pulley

Проверка и замена ремня ГРМ автомобиля Рено Сандеро

And the crankshaft pulley, also aligning the risk on the belt with the timing mark on the pulley.

After that, we install the belt on the tension roller.

We tighten the belt by turning the tension roller counterclockwise until the previously applied marks coincide, and tighten the roller nut.

We install the accessory drive pulley on the crankshaft and turn the crankshaft by the fastening bolt two turns and check the correctness of the marks.

After that, we collect all the parts in reverse order.