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3.2.10. Camshafts and elevators of valves

Sequence of tightening of bolts of covers of bearings of a shaft of inlet valves (right head)

Sequence of tightening of bolts of covers of bearings of a shaft of inlet valves (left head)

Sequence of tightening of bolts of covers of bearings of a shaft of final valves (right head)

Sequence of tightening of bolts of covers of bearings of a shaft of final valves (left head)

Removal

PERFORMANCE ORDER
1. Install the first piston in VMT. Uncover heads, a gas-distributing belt and an asterisk of the camshaft.
2. Check that synchronizing tags on gear wheels of shaft were combined.
3. Stop an auxiliary gear wheel of a shaft of final valves, having twisted a bolt in openings of auxiliary and main gear wheels.
4. Weaken bolts of covers of bearings of a shaft of inlet valves in the sequence of the return sequence of their tightening (see rice. Sequence of tightening of bolts of covers of bearings of a shaft of inlet valves (right head), rice. Sequence of tightening of bolts of covers of bearings of a shaft of inlet valves (left head). Uncover bearings and get a shaft.
5. Weaken bolts of covers of bearings of a shaft of final valves in the sequence of the return sequence of their tightening (see rice. Sequence of tightening of bolts of covers of bearings of a shaft of final valves (right head), rice. Sequence of tightening of bolts of covers of bearings of a shaft of final valves (left head)). Uncover and get a shaft.
6. Similarly remove shaft of other head.
7. Put covers of bearings in the correct sequence.
8. To sort a gear wheel of a shaft of final valves, fix a shaft in a vice. By means of a special key weaken pressure upon the boat twisted in gear wheels, and unscrew it.
9. Remove a lock ring of an auxiliary gear wheel.
10. Remove an auxiliary gear wheel (3), a spring (2) and washers (1).

Check

Cm. subsection 3.1.10.

Installation

PERFORMANCE ORDER
1. Establish an auxiliary gear wheel and its elements.
2. Fix a shaft in a vice and again twist a bolt in openings of gear wheels of a shaft. Grease with universal lubricant elevators of valves (if you removed them) and establish them in the corresponding nests.
3. Grease with special lubricant cams and necks of bearings of a shaft of final valves, and establish a shaft in a head. Tags on a gear wheel have to be directed towards a shaft of final valves (in the drawing on the right – the right head, at the left – left).
4. Apply sealant on external parts of the joined surface of a cover of the first bearing (are marked with shading).
5. Establish covers of bearings as numbering. Shooters on covers have to be directed towards a gas-distributing belt (in the drawing on the right – the right head, at the left – left).
6. Tighten bolts of covers till the required inhaling moment. Tighten bolts in the specified sequence on one fourth turns at one time (see rice. Sequence of tightening of bolts of covers of bearings of a shaft of final valves (right head), rice. Sequence of tightening of bolts of covers of bearings of a shaft of final valves (left head)).
7. Establish a new epiploon of a shaft.
8. Grease with special lubricant cams and necks of bearings of a shaft of inlet valves.
9. Establish a shaft in a head, having combined tags on gear wheels of shaft.
10. Establish covers of bearings as numbering. Shooters on covers have to be directed towards a gas-distributing belt (in the drawing on the right – the right head, at the left – left).
11. Tighten bolts of covers till the required inhaling moment. Tighten bolts in the specified sequence on one fourth turns at one time (see rice. Sequence of tightening of bolts of covers of bearings of a shaft of inlet valves (right head), rice. Sequence of tightening of bolts of covers of bearings of a shaft of inlet valves (left head)).
12. Unscrew the stopping bolt from gear wheels of a shaft of inlet valves.
13. Establish asterisks of shaft and a gas-distributing belt.
14. Establish the remained details.