The period for replacing the belt, regardless of its condition, is 60 thousand kilometers or four calendar years, whichever comes first

A broken belt can cause significant engine damage.

Engine pistons and valves can be severely damaged.

The valves are either broken or bent, and the pistons are destroyed. The connecting rods are also damaged.

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

The surface of the belt must be free of oil.

On K4M engines, the pulleys do not have alignment marks, so you need to have special tools for setting the camshafts to the TDC position of the first cylinder and a special pin to fix the crankshaft at the TDC of the first cylinder.

Devices, of course, can be made by yourself according to the drawings given in this article.

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

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We take out the holder of the wiring harness 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

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Unscrew the three bolts securing the support to the body

Removing the right support

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

Checking and replacing the belt on the K4M 1.6L engine

Замена ремня ГРМ двигателя К4М Ниссан Альмера

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

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

Removing the top cover

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

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

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

Замена ремня ГРМ двигателя К4М Ниссан Альмера

We loosen the tightening of the tension roller fastening nut with a 13 wrench and turn the roller clockwise with a hexagon by 6, pulling the belt until the pointers are aligned.

While holding in this position, tighten the roller fixing nut.

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

Remove the top timing cover

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

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

Removing the bolt with washer

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Remove the accessory drive pulley

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

Remove the cover

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

To do this, unscrew all the candles.

We screw the bolt securing the auxiliary 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.

Замена ремня ГРМ двигателя К4М Ниссан Альмера

We remove the air intake with a resonator

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Poke a hole in the center of the plug

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

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

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

Замена ремня ГРМ двигателя К4М Ниссан Альмера

The dimensions of the fixture are shown in the figure.

Замена ремня ГРМ двигателя К4М Ниссан Альмера

We install the device in the grooves of the shafts

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

Unscrew the cork head E14

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Insert the dowel pin into the hole (shown with pan removed)

When the crankshaft is in the TDC position of the pistons of the 1st and 4th cylinders, the mounting pin 1 must be screwed into the hole to the end of the thread and abut against the milled area 2 on the crankshaft web.

After that, the crankshaft will be impossible to turn.

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 boss of the hole in the cylinder block (there will be a gap between the nut and the boss), then you need to turn the crankshaft counterclockwise a little (by removing the device from the grooves of the camshafts) arrows.

Then you need to screw the mounting pin into the hole of the cylinder block to the end (until the ends of the pin nut and the boss of the hole in the block touch) and turn the crankshaft clockwise until the shaft cheek pad stops against the pin.

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

An M10 bolt can be used as a mounting pin

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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.

Turn the roller counterclockwise, reducing the tension of the timing drive

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Removing the belt from the tension roller

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

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

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

Remove the tension roller from the stud of the coolant pump housing

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Using the TORX T50 wrench, unscrew the screw securing the support roller

Remove the support roller and its bushing.

Timing belt installation

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

We install the belt on the gear 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.

Замена ремня ГРМ двигателя К4М Ниссан Альмера

When installing the tension roller, we 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 fixing pin from the hole in the cylinder block and remove the device for fixing the camshafts.

We scroll 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.

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

We collect the parts in reverse order. We replace the auxiliary drive pulley mounting bolt with a new one and tighten it with a torque of 40 Nm, then tighten it by 110˚.

We tighten the bolt for fastening the bracket for the tension roller of the auxiliary drive belt with a torque of 21 Nm.

Tighten the timing belt support roller bolt to 50 Nm.

Tighten the timing belt tensioner pulley nut with a torque of 28 Nm.

We tighten the M8 bolt for fastening the upper cover of the timing drive with a torque of 22 Nm.

We tighten the M10 bolt for fastening the upper cover of the timing drive with a torque of 44 Nm.

We tighten the bolt of fastening of the bottom cover of the timing drive with a torque of 8 Nm.