ATTENTION Connection of a head of the block and the aluminum block of cylinders with a stage of support of a cranked shaft is carried out by anchor bolts. Both heads of the block of cylinders are necessary to replace. When easing and untwisting bolts of a head of the block of cylinders there is a buckling of the block of cylinders.

NOTE Here components of the first row of cylinders are represented. In mirror display they correspond to components of the second row of cylinders.

Fig. 2.201 . Components of a head of the block of cylinders: 1–a connecting hose (in cars with BLE and BWF engines); 2–a sealing cuff (in cars with BLE and BWF engines); 3–the holder (in cars with BLE and BWF engines); 4–a sound-proof cover (in cars with BLE and BWF engines); 5-heads of the block of cylinders (in cars with BLE and BWF engines); 6–a sound-proof cover (at cars with alphabetic references of the engine AYH, BKW); 7–a cover of a head of the block of cylinders (at cars with alphabetic references of the engine AYH, BKW); 8–bolt of 20 N • m; 9–laying of a head of the block of cylinders; 10-head of the block of cylinders; 11-bolt of a head of the block of cylinders; 12-sealing cuff; 13-an adapter (at cars with alphabetic references of the engine AYH, BKW)

Removal

Dismantle the engine and a transmission.

Remove a sound-proof cover and a cover of a head of the block of cylinders from block heads.

Dismantle the fuel pump and the pump of tandemny type from heads of the block of the cylinder.

Establish a cranked shaft in the provision of a dead point of the first cylinder check gazoraspredeleniye phases.

Dismantle leading gear wheels of camshafts.

Unscrew fixing bolts between a cover of the distributive mechanism and a head of the block of the first and second row of cylinders.

Fig. 2.202 . Sequence of twisting of bolts of fastening of a head of the block of cylinders

Bolts of a head of the block of cylinders weaken and unscrew in the set sequence ( (fig. 2.202) shows in the movement direction).

By means of the assistant carefully remove heads of the block of cylinders.

NOTE Messages of a head of the block of cylinders should be avoided damages very accurately. Enclose in cylinders pure rags that between mirrors of cylinders and pistons dirt and the sandpaper remains did not get. Check, that dirt and the sandpaper remains also did not get to cooling liquid. Accurately clear landing surfaces of a head of the block and the block of cylinders. Thus should not remain long scratches and задиров (when using emery paper its granularity should be not less than 100).

Installation

Before installation of heads of the block of cylinders establish a cranked shaft in the provision of a dead point of the first cylinder.

NOTE Always replace bolts of a head of the block of cylinders. New laying of a head of the block of cylinders follows take out from packing directly ahead of installation. Establish laying of a head of the block of cylinders with an identical index of "Dicke/thickness" of the removed laying. With laying follows address very carefully. Damages of a silicone layer and gofrovy connections conduct to tightness loss.

Rotate a cranked shaft against the direction of rotation of a shaft of the engine until all pistons will evenly not stand in situation below a dead point.

Establish sealing laying of a head of the block of cylinders.

Fig. 2.203 . Position of a kompnstsionny slip

Establish a head of the block of cylinders, considering a position of a compensatory slip (fig. 2.203) , bolts of a head of the block of cylinders with washers establish and twirl by hand.

ATTENTION All bolts of a head of the block of cylinders, except (on sequence of an inhaling) number 1, 2, 17 and 19 should be equipped with washers with a groove.

Fig. 2.204 . Sequence in fastenings of a head of the block of cylinders

Heads of the block of cylinders tighten in four stages in the specified sequence of an inhaling ( (fig. 2.204) shows the movement direction).

1–Tighten a dinamometrichesky key:

– stage 1 = 30 N · m;

– stage 2 = 60 N · m.

2–Further rotate a usual key:

– a stage 3 = to tighten on 1/2 turns (180 °);

– a stage 4 = to tighten on 1/2 turns (180 °).

Establish leading gear wheels of camshafts.

Adjust gazoraspredeleniye phases.