2.2.14. Removal and installation of a cam-shaft, pusher of the valve and adjusting laying

Fig. 2.84. Details of a cam-shaft, pusher of the valve and adjusting laying: 1 – cam-shaft of the drive of inlet valves; 2 – cam-shaft of the drive of final valves; 3 – laying; 4 – valve pusher; 5 – camshaft case; 6 – camshaft case bolt

Uncover a gas distribution mechanism drive chain.

Remove a gas distribution mechanism drive chain.

Fig. 2.85. Order of weakening of bolts of fastening of the case of the camshaft

Weaken camshaft case bolts in the order shown in the figure 2.85 and completely turn off them.

Remove cases of camshafts.

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

Fig. 2.86. A valve 2 pusher with adjusting laying 1

Remove pushers of valves 2 with adjusting laying of 1 (fig. 2.86).

Fig. 2.87. Installation of a pusher

Establish pushers of valves and adjusting laying in a head of the block of cylinders. Apply engine oil on the periphery of a pusher of the valve, then establish it in a head of the block of cylinders (fig. 2.87).

NOTE At installation of adjusting laying, make sure that the party of laying on which No. is put is turned to a valve pusher.

Establish cam-shafts 1.

Fig. 2.88. Combination of tags on asterisks at installation of cam-shafts

Apply engine oil on the surfaces of friction of each cam-shaft and basic necks of a cam-shaft, then establish them, as shown in the figure 2.88.

NOTE Before installation of cam-shafts turn a bent shaft so that the shponochny groove was turned up.

Fig. 2.89. Pin of the case of the camshaft 1

Fig. 2.90. Control position of cases of the camshaft: A – the party of an admission or E – the party of release; B – situation from a gas distribution mechanism drive chain; C – specifies towards a gas distribution mechanism drive chain

Establish pins of the case of the camshaft 1, as shown in the figure 2.89.

On each case of the camshaft there are relief tags which, specify situation and the direction of installation. Install cases on these tags.

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

Oil engine bolts of cases and tighten them at first temporarily. Then tighten them in the order shown in the figure 2.91. Tighten bolts gradually, at the same time and exactly, repeat the sequence of an inhaling two or three times before finally to tighten bolts nominal force.

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

Establish a gas distribution mechanism drive chain with an asterisk of a bent shaft.

Establish a gas distribution mechanism drive chain cover.

Check gaps in valves.