65637bd9



3.2.1.7. Chain of the drive of cam-shafts


Gas distribution mechanism drive details
1. Block of cylinders
2. Cam-shafts
3. Ring laying
4. Top guide of a chain
5. Bolt of the top guide
6. Asterisk of a cam-shaft of inlet valves
7. Asterisk of a cam-shaft of final valves
8. Cam-shaft asterisk bolt
9. Chain
10. Nut and bolt of a natyazhitel of a chain
11. Natyazhitel
 12. Ring laying
13. Laying
14. Boot of a natyazhitel
15. Bolt of an axis of a boot of a natyazhitel
16. Uspokoitel
17. Bolt of an uspokoitel
18. Leading asterisk of the crankshaft
19. Remote plug of the drive of the oil pump
20. Cover of the chain drive of cam-shafts
21. Crankshaft pulley
22. Bolt of a cover of the chain drive
23. Crankshaft pulley bolt

Removal
PERFORMANCE ORDER
1. Install the piston of the 1st cylinder in compression step VMT (see subsection 3.1.1.3).
2. Uncover a head of cylinders (see subsection 3.2.1.4).
3. Uncover the chain drive of cam-shafts (see subsection 3.2.1.6).
4. Remove an oil filter (see subsection 2.2.1). In case of damage of the filter at removal replace the filter.
5. Turn off nuts and bolts of fastening and get a natyazhitel of a chain. Remove ring laying of a natyazhitel.
Prevention

At removal of a natyazhitel rotation of the crankshaft is not allowed.
6. Turn off bolts of fastening and remove the top guide of a chain from the top part of a head of cylinders.
7. Turn off a bolt of an axis of a boot of a natyazhitel of a chain and take off a boot from the block of cylinders.
8. Release and turn off bolts (shooters) and remove an uspokoitel.
9. Release bolts of asterisks of cam-shafts, holding each of cam-shafts Rozhkov a key for lysk in a forward part, get each of bolts together with a washer.
10. Remove asterisks from cam-shafts. When weakening adjusting pins in end faces of cam-shafts, remove pins and you store together with asterisks.
11. Remove a chain from the leading asterisk of the crankshaft.
12. If necessary remove an asterisk from the crankshaft, previously having paid attention to the correct provision of an asterisk, and remove a spline (when weakening a spline in a crankshaft flute). You store a spline together with the leading asterisk.

Check of a state
PERFORMANCE ORDER
1. Check existence on the leader and two conducted asterisks of such signs of wear and defects as chips, a kryuchkovatost or lack of teeths. At detection of any of the listed signs of wear and damages all asterisks, and also a chain should be replaced in a set.
2. Examine chain links, check wear of rollers. Degree of wear of a chain can be determined by a deflection in the horizontal plane. In a new chain the deflection is almost absent. If in links of a chain there is a noticeable axial side play, then the chain should be replaced. Keep in mind that irrespective of existence of external signs of wear, the chain also should be replaced after the considerable run or if on the working engine noticeable noise from a chain is listened. It is strongly recommended to change a chain in a set with asterisks as installation of a new chain on worn-out asterisks, or on the contrary, results in the increased wear of a new detail and does not justify itself from the point of view of expenses. If the condition of chains and asterisks casts doubts, then address for the qualified consultation in service of Nissan car service.
3. Check existence of signs of wear or damages on an uspokoitel and the directing chain to the place of contact with a chain, at detection of defects replace these details.
4. The condition of a natyazhitel can be estimated only by comparison with a new detail. If the condition of a natyazhitel casts at least small doubt, then it should be replaced.

Installation
PERFORMANCE ORDER
1. Make sure that the piston of the 1st cylinder still is in compression step VMT (the flute under a spline on a sock of the crankshaft has to be turned vertically up if to look on the right side of the engine). Insert a spline into a flute on a crankshaft sock.
2. Correctly orient the leading asterisk of the crankshaft (the adjusting tag on an asterisk has to be turned from the crankshaft aside, and the flute in an asterisk has to be combined with a spline) and dress on the crankshaft.
3. In a chain there are three links differing on color (are specified by shooters), each of which corresponds to a separate adjusting tag. Two links which are more closely to each other correspond to adjusting tags of cam-shafts, the third link has to coincide with an adjusting tag of the leading asterisk of the crankshaft.
Prevention

On some cars those links of a chain which correspond to adjusting tags of asterisks of cam-shafts can differ on color from the link corresponding to an adjusting tag of the leading asterisk.
4. Orient a chain so that the links differing on color were directed outside and settled down opposite to the corresponding adjusting tags, get a chain on the leading asterisk, having combined the link (shooter) which is highlighted with color with an adjusting tag on an asterisk.
5. Establish the conducted asterisks on cam-shafts of inlet and final valves, at the same time adjusting tags on asterisks have to be turned outside.
Prevention

Both asterisks are identical.
6. Dress a chain (it is specified by an arrow) on asterisks of a cam-shaft of final valves so that the links differing on color were combined with adjusting tags.
7. Then dress a chain (it is specified by an arrow) on asterisks of a cam-shaft of inlet valves, having combined differing on color links with adjusting a metkama.
8. Insert adjusting pins (if acted) into end faces of cam-shafts, combine grooves in asterisks with adjusting pins. Make sure that the links differing on color are combined with the corresponding adjusting tags of asterisks. Otherwise remove a chain from asterisks and execute necessary adjustments.
9. After combination of adjusting tags with the corresponding links of a chain wrap bolts of asterisks of cam-shafts, having dressed on washer bolts.
10. Tighten bolts with the set moment. During an inhaling do not allow a cam-shaft provorachivaniye, holding it for lysk Rozhkov a key.
11. Establish an uspokoitel and tighten a bolt of an uspokoitel with the set moment.
12. Establish a boot of a natyazhitel of a chain and tighten a boot axis bolt with the set moment.
13. Establish the top guide of a chain on a head of cylinders, tighten bolts with the set moment.
14. Release the lever of a clamp of a natyazhitel (1), press a plunger in the case and record in such situation a hook, having thrown with it a pin of a plunger (2).
15. Establish new laying on a flange of a natyazhitel, and in a flute of the case lay a new sealing ring.
16. Establish a natyazhitel, having convinced that the arrow on a flange is turned from a head of cylinders aside. Dress washers and tighten nuts of a natyazhitel with the set moment. After an inhaling of nuts the assembly hook has to leave automatically gearing with a pin, having released a plunger.
17. Establish a new oil filter and fill the engine with oil (see subsection 2.2.1).
18. Establish a cover of the chain drive (see subsection 3.2.1.6).
19. Establish a cover of a head of cylinders (see subsection 3.2.1.4).