2.2.15. Check of a cam-shaft, pusher of the valve and adjusting laying

Fig. 2.92. Measurement of height of a cam of a cam-shaft

Using a micrometer, measure height of a cam of "a". If the measured height – less limit, replace a cam-shaft (fig. 2.92).

Fig. 2.93. Measurement of a beating of a cam-shaft

Establish a cam-shaft on prisms and measure its beating by the indicator of the sentry like (fig. 2.93).

If the measured beating exceeds the specified limit, replace a cam-shaft.

Cam-shaft beating limit: 0,10 mm.

Check basic necks of a cam-shaft and cases of a cam-shaft for existence of pointed corrosion, scratches, wear or other damages. In the presence of some aberration, replace a cam-shaft or a head of the block of cylinders with the case. Never replace a head of the block of cylinders, without replacing the case.

Clear cases and basic necks of a cam-shaft.

Remove all pushers of valves with adjusting laying.

Establish a cam-shaft in a head of the block of cylinders.

Put on a neck (parallel to a cam-shaft) a piece of the calibrated plastic wire length of which, is equal to width of a basic neck of a cam-shaft.

Install the camshaft case.

Fig. 2.91. Order of tightening of bolts of fastening of the case of the camshaft

Tighten bolts in the order shown in the figure 2.91, the specified effort of an inhaling.

Inhaling moment bolts of the case of the camshaft (a): Tighten the moment 11 N · m.

Fig. 2.94. Basic neck of the bearing of a cam-shaft

NOTE Do not rotate a cam-shaft after installation of the case.

Fig. 2.95. Measurement of a calibration wire

Remove the case and, using a scale 2 on packing from the calibrated plastic wire, measure width of the flattened wire 1 in the widest place (fig. 2.95).

Nominal: 0,045–0,087 mm.

Limit: 0,12 mm.

Fig. 2.96. Measurement of diameter of an opening of a support and diameter of a basic neck of a cam-shaft

If the measured gap between a basic neck of a cam-shaft and an opening of a support exceeds extreme value, measure diameter of an opening of a support and diameter of a basic neck of a cam-shaft (fig. 2.96). Replace a cam-shaft or a head of the block of cylinders, depending on what of the measured values has a bigger aberration.

Fig. 2.97. Check of wear of a pusher of the valve and adjusting laying

Check a pusher of the valve and adjusting laying for existence of pointed corrosion, scratches or other damages. In the presence of some aberration replace (fig. 2.97).

Measure diameter of an opening in a head of the block of cylinders and the outer diameter of a pusher of the valve to define a gap between a pusher and an opening in a block head. If the gap exceeds extreme value, replace a pusher of the valve or a head of the block of cylinders.

Nominal: 0,025–0,066 mm.

Limit: 0,15 mm.

Nominal: 30,959–30,975 mm.

Fig. 2.98. Measurement of diameter of an opening in a head of the block of cylinders and outer diameter of a pusher of the valve

Nominal: 31,000–31,025 mm.

Fig. 2.99. Details of valves and head of the block of cylinders: 1 – valve crackers; 2 – holder of a valvate spring; 3 – valvate spring; 4 – consolidation of a core of the valve; 5 – saddle of a valvate spring; 6 – inlet valve; 7 – final valve; 8 – the directing valve plug; 9 – a bolt of fastening of a head of the block of M10 cylinders – at reuse check diameter of a bolt of fastening of a head of the block of cylinders (M10) (drags on in a zone of plastic deformation); 10 – head of the block of cylinders; 11 – laying of a head of the block of cylinders – a tag of "TORAHS" on laying has to be turned up and settle down from a pulley of a bent shaft; 12 – pin; 13 – bolt of fastening of a head of the block of M8 cylinders

Details of valves and head of the block of cylinders are shown in fig. 2.99.

Remove the power unit from the car.

Fig. 2.100. Back amplifier of an inlet collector

Remove the back amplifier of an inlet collector of 1 (fig. 2.100).

Remove the oil pallet.

Uncover a head of the block of cylinders.

Uncover a gas distribution mechanism drive chain.

Remove a gas distribution mechanism drive chain.

Remove cam-shafts of the drive of inlet and final valves.

Fig. 2.101. Order of weakening of bolts of fastening of a head of the block of cylinders

Weaken bolts of fastening of a head of the block of cylinders as it should be shown in the figure 2.101 by means of 12-faced face keys and completely turn off them.

NOTE Do not forget to turn off a bolt (M8) 1, as shown in the figure 2.101.

Check whether everything details are removed or disconnected.

Remove a final collector, in case of need.

Remove a head of the block of cylinders with inlet and final collectors. In case of need use the load-lifting mechanism.

Clear the interfaced surfaces of a head of the block of cylinders and the block of cylinders. Remove oil, the remains of old laying and dust from the interfaced surfaces.

Establish pins 1 in openings of the block of cylinders.

Fig. 2.102. Installation of new laying of a head of the block of cylinders

Install new laying of a head of the block of cylinders 2 on the block of cylinders. The tag of "TORAHS" on laying has to be turned up (towards a head of the block of cylinders) and to settle down from a pulley of a bent shaft (fig. 2.102).

Fig. 2.103. Tightening of a nozzle of Venturi

Make sure that the maslorazbryzgivayushchy nozzle (Venturi's nozzle) 1 is established and if it so, then – it is not littered. At installation of a nozzle be convinced that the nozzle is tightened by the nominal force of an inhaling (fig. 2.103).

Moment of a zatyazhkisopl of Venturi (a): 5 N · m.

Install a head of the block of cylinders on the block of cylinders.

Apply engine oil on bolts of fastening of a head of the block of cylinders and tighten them gradually as follows.

Tighten bolts of fastening of a head of the block of cylinders ("1" – "10") the moment of 20 N · m in that order using 12-faced face keys.

B) In the same way, as in operation a), tighten their moment 40 N · m.

Fig. 2.104. Order of tightening of bolts of fastening of a head of the block of cylinders

C) Tighten all bolts on 60 ° in the order shown in the figure 2.104.

Tighten a bolt of fastening of a head of the block of M8 (1) cylinders the nominal force of an inhaling.

Moment of an inhaling of a bolt of fastening of a head of the block of M10 (a) cylinders: 20 N · m, 40 N · m, tighten on 60 ° and 60 °;

bolt of fastening of a head of the block of M8 (b) cylinders: 22 N · m.

NOTE Use new bolts of fastening of a head of the block of cylinders. At reuse check diameter of a carving of bolts of fastening of a head of the block of cylinders for deformation existence as it is described below, and replace them new if the difference of diameters of a carving exceeds extreme value.

Fig. 2.105. Measurement of diameter of a carving of a bolt of fastening of a head of the block of cylinders

Measure diameter of a carving of a bolt of fastening of a head of the block of cylinders 1 in a point of "A" at distance of 83,5 mm from a flange of a bolt and "B" at distance of 115 mm from a bolt flange with use of a micrometer of 2 (fig. 2.105).

Then calculate a difference of diameters ("A" - "B").

If the difference of diameters exceeds extreme value, replace bolts new.

Points of measurement of diameter of a bolt of fastening of a head of the block of cylinders: "a": 83,5 mm, "b": 115 mm.

Difference of diameters of a bolt of fastening of a head of the block of cylinders (deformation): extreme value ("A" - "B") – 0,1 mm.

Establish the amplifier of a final collector.

Establish cam-shafts, a chain of the drive of the mechanism of gas distribution and a cover of a chain. drive of the mechanism of gas distribution and natyazhitel of a chain.

Establish a cover of a head of the block of cylinders and the oil pallet.

Establish the amplifier of an inlet collector and connect hoses.