5.9. Check and replacement of a driving chain

Check

PERFORMANCE ORDER
1. Remove the top cover of a driving chain.
2. Uncover a head of the block of cylinders.
3. For a bolt of fastening of a pulley of a bent shaft turn a bent shaft of the engine and on all length check a condition of a chain. If the chain during the operation of the engine publishes the increased noise or there is a big axial side play of a chain on an asterisk, the chain needs to be replaced. In the presence of development on chain rollers the chain needs also to be replaced.

Replacement


Prevention

At removal of a chain it is necessary to use an emery circle or vulkanit, for cutting of the coming-out hats of one of chain links.


Soshlifovyvaniye of rivets of one of links of a chain (A) and removal of a link from a driving chain (In)

PERFORMANCE ORDER
1. Remove a weight wire from the accumulator.
2. Unscrew spark plugs.
3. Unscrew the mechanism of a tension of a driving chain.
4. Remove the top cover of a driving chain.
5. Remove the top uspokoitel of a chain.
6. Uncover a head of the block of cylinders.
7. Close pure rags a head of the block of cylinders and space under an asterisk ми camshafts.
8. Using an emery circle or vulkanit, a soshlifuyta of a rivet of one of chain links from an asterisk of the camshaft operating final valves (see the drawing).
9. Remove the fixing plate and a link of a chain from a driving chain.
10. Being careful, remove rags so that metal shaving did not get to a cover of a driving chain.
11. Using a connecting link of a chain, connect the ends of an old and new chain.
12. Supporting a driving chain in constantly tense situation, turn a bent shaft of the engine clockwise. At the same time the new chain after old, will pass around asterisks and guides.
13. After emergence of the end of a new chain disconnect an old chain from new.
14. Establish a new chain on an asterisk of the camshaft operating final valves, then connect two ends of a chain.
15. Establish the fixing plate and a rasklepayta a connecting link of a chain.
16. Establish the top uspokoitel of a chain.
17. Establish the top cover of a driving chain.
18. Install the mechanism of a tension of a driving chain.
19. Turn a bent shaft of the engine clockwise and install the piston of the first cylinder in the top dead point and check that all adjusting tags were combined with indexes.
20. Establish a cover of a head of the block of cylinders.
21. Screw in spark plugs.
22. Connect a weight wire to the accumulator.