After removing the cylinder head, we disassemble it and defect.

Removing the cylinder head was discussed in the article - "Removing the cylinder head from the engine."

Разборка головки блока цилиндров К4МРазборка головки блока цилиндров К4М

Remove the lower exhaust manifold heat shield (Figure 1).

We pass a 22 spanner through the wire of the lambda probe sensor and unscrew it.

Разборка головки блока цилиндров К4М

We unscrew the fastening of the upper heat shield and remove it (Fig. 3 shows the screen with the cylinder head installed).

Разборка головки блока цилиндров К4М

Remove the exhaust manifold (Figure 4).

Разборка головки блока цилиндров К4М

We unscrew the thermostat block from the cylinder head and remove it (Figure 5).

Разборка головки блока цилиндров К4МРазборка головки блока цилиндров К4М

We remove the lining of the nozzle bodies (see Fig. 6).

Compress the valve springs with tool Mot. 1502. The valve spring cap must fit into the bore (1) of the pressure sleeve (3) of tool Mot. 1502. (see Fig. 7).

To properly compress the valve springs, the tool plunger (2) must be centered on the valve stem.

Remove cotters, valve spring caps, valve springs, valves and valve stem seals using pliers Mot.1335.

Removing the exhaust valve tappet

Разборка головки блока цилиндров К4М

Adjust pin (3) of tool Mot. 1669 until it stops (B) at the end of the guide groove by unscrewing the screw (4) (see Fig. 8).

Install tool Mot. 1669 on the cylinder head by correctly inserting the guide pin (1) into the hole (2) of the cylinder head cover (see Fig. 8).

Разборка головки блока цилиндров К4М

Attach tool Mot. 1669 on the cylinder head cover with three bolts (see 3, fig. 9).

Screw in the screw (1) until the pin (2) rests at point (A) at the end of the guide slot.

Разборка головки блока цилиндров К4М

We unscrew the locking bolt of the pusher (see the arrow, Fig. 10).

Loosen the screw (1) until the pin (2) rests at point (B) at the end of the guide slot (see fig. 9).

Remove tool Mot. 1669 from the cylinder head cover.

Remove pusher and spring.

Installing the exhaust valve tappet

Разборка головки блока цилиндров К4М

Install the spring and pushrod by aligning the groove (1) of the pushrod with the hole (2) in the cylinder head cover (see Fig. 11).

- bring the pin (3) of tool Mot.1669 to the stop at the end of the guide groove by unscrewing the screw (4) (see fig. 8).

- install tool Mot.1669 on the cylinder head, correctly inserting the locating pin (1) into the hole (2) of the cylinder head cover (see Fig. 8).

- Fasten tool Mot.1669 to the cylinder head cover with three bolts (see 3, fig. 9).

- Screw in the screw (1) until the pin (2) is brought to a stop at point (A) at the end of the guide groove

Разборка головки блока цилиндров К4М

- Screw the hexagon head bolt of tool Mot.1669 into the cylinder head cover to block the tappet (see arrow, fig. 12).

- Unscrew the screw (1) until the pin (2) comes to rest at point (B) at the end of the guide slot (see fig. 9).

- Remove tool Mot.1669 from the cylinder head cover.

The cylinder head is assembled in the reverse order, after fault detection and repair of the cylinder head.