dbba662c

4.6. Check and adjustment of basic position of camshafts

Petrol models

Check

Installation of basic position of camshafts of petrol M112/113 engines



Details of installation of covers of heads of cylinders on petrol M112/113 engines (on the example of M112)

1 — the Top panel of finishing of the engine with the built-in air cleaner
2 — the Cover of the right head of cylinders
3 — the Cover of the left head of cylinders
4 — Assembly of coils of ignition of the right number of cylinders

5 — Assembly of coils of ignition of the left number of cylinders
6 — Right сапун
7, 8 — the Left sapuna

 PERFORMANCE ORDER

  1. Uncover heads of cylinders.
  2. For check of correctness of basic installation of camshafts turn a bent shaft in the normal direction and bring the piston of the first cylinder into situation 40 ° after VMT, - camshafts have to be deployed by grooves (6) to the plane of symmetry of the engine and be fixed freely by blocking cores.

On the models equipped with the air pump before installation of the right blocking pin it is necessary to otboltit the combined valve. Copperplated segments of a chain (1) have to be combined with tags (4) on asterisks of camshafts, - for the purpose of achievement of the required result it can be necessary to turn a bent shaft to 14 times.

  1. Remove a natyazhitel of a chain.
  2. Remove Hall's sensor.
  3. Having lifted a chain, remove an asterisk at first of the right, then left camshaft.
  4. By means of a rozhkovy key deploy the left camshaft in basic situation, - the grooves (6) developed to the plane of symmetry of the engine have to be combined with the line of a joint of covers with heads, - and record it a blocking plate (2), having put the last aflush with the left head and having filled in a groove (6) of the camshaft.

In position of the piston of the first cylinder 40 ° after VMT the camshaft can turn without risk of collision of pistons with valves.

  1. Working in a similar manner, expose the right camshaft. In case of need make necessary adjustment (see below).
  2. Filling in a chain, establish to the place of an asterisk of camshafts (at first left, then right).
  3. Install Hall's sensor.
  4. Establish a natyazhitel of a chain.
  5. Make sure of correctness of combination of adjusting tags, then establish to the place of a cover of heads of cylinders.
  6. In conclusion check correctness of installation of a corner of an advancing of ignition (see the Section Check of Correctness of Installation of a Corner of an Advancing of Ignition on petrol models).

Adjustment

Adjustment of basic position of camshafts on petrol M112/113 engines (on the example of M112)

 PERFORMANCE ORDER

  1. Remove the bridge of covers of bearings of the corresponding camshaft.
  2. Having pushed out an axis (3) by means of a drift (1) with a diameter of 15 mm, remove yokes (2).

For simplification of extraction of an axis of yokes the bridge can be previously heated-up and established on a special bed (4).

  1. Take a drift (1) and fill the directing shaft (Ø 16 or 18 of mm) on its place, at the same time putting on it yokes (2).
  2. In case of need previously having warmed the bridge, also fill to it an axis of yokes (3), pushing out it the directing shaft, - try not to bend the yokes leveled in assembly.
  3. Establish assembly of the bridge on the regular place.

Diesel models

M612

Verification of the basic provision of camshafts of the diesel M612 engine



Details of installation of a cover of a head of cylinders of the M612 engine

1 — the Panel of finishing of a cover of a head of cylinders
2 — the Panel of finishing of the air distributor
3 — the Branch pipe of a sapun
5 — the Basic arm of a plait of an electrical wiring
7 — the Cover of a head of cylinders

8 — Sealing laying
9 — Sealing elements
B6/1 — Hall's Sensor
Y76 — Nozzles

 PERFORMANCE ORDER

  1. Remove nozzles (Y76) (see the Head of the Power supply system and production of the fulfilled gases).
  2. Uncover a head of cylinders.
  3. Remove the cooling system fan with the viscous coupling (see the Head of the Cooling system, heating, ventilation and air conditioning).
  4. Having turned a bent shaft in the normal direction, bring the piston of the first cylinder into the provision of VMT, - tags of the camshaft and a cover of its bearing have to be combined.
  5. Block camshafts by means of the special core (3) passed through an opening in a cover of the first bearing of a shaft and filled in an opening (A) in a gear wheel (2) of the inlet camshaft.
  6. At the correct basic installation of a tag (V) of gear wheels of camshafts (1 and 2) have to be combined. Besides, there has to be a combination of the tags applied on bodies of shaft and a cover of their bearings (arrow).
  7. In case of need remove camshafts and install them into place, trying to obtain the correct combination of tags.
  8. Working as it should be, the return to a dismantle order, install into place the being removed components.
  9. In conclusion make reading of the DTC codes and cleaning of memory of system of onboard self-diagnostics by means of the STAR DIAGNOSIS scanner (6511 1801 00) (see the Head Sistemy of electric equipment of the engine).

M628

Installation of basic position of camshafts of the engine of a series 628

1 — the Gear wheel of the inlet camshaft
2 — the Gear wheel of the final camshaft
3 — the Inlet camshaft

4 — the Final camshaft
5 — Natyazhitel of a chain
In — Adjusting tags

Details of installation of covers of heads of cylinders of the M682 engine (1 of 2)

1, 4, 5 — Screws
2 — the Inlet air duct
3 — the Cover of a head of cylinders
3a — Sealing laying
6 — the Cover
7 — the Drainage hose
8 — Bolts
9 — the Line of supply of fuel
10 — the Line of return of fuel

11 — the Head of cylinders
12 — the Basic arm
13 — the Vacuum hose
B2/6 — the Left MAF sensor
B2/7 — the Right MAF sensor
B6/1 — Hall's Sensor of the camshaft
Y83 — the Valve switch of a cut-off of inlet port

Details of installation of covers of heads of cylinders of the M682 engine (2 of 2)

5 — the Screw
5a — the Bolt
6 — the Cover
14 — the Left inlet air duct
15 — the Right inlet air duct
16 — the Panel of finishing of the left head of cylinders
17 — the Panel of finishing of the right head of cylinders

B28 — pressure Sensor
N14/2 — the Output cascade of system of preheat
N14/2x1 — the Socket of an electrical wiring of the output cascade of system of preheat
N14/2x2 — the Socket of an electrical wiring of the output cascade of system of preheat

 PERFORMANCE ORDER

  1. Uncover heads of cylinders.
  2. Remove an intermediate cooler (Intercooler) of system of a turbo-supercharging (see the Head of the Power supply system and production of the fulfilled gases).
  3. Having turned a bent shaft in the normal direction, bring the piston of the first cylinder into the provision of VMT.
  4. Check basic position of camshafts, - gear wheels have to be developed by tags (V) to each other, besides, there has to be a combination of the tags applied on bodies of shaft and a cover of their bearings (arrow).
  5. In case of need make the corresponding adjustment.
  6. Working as it should be, the return to a dismantle order, install into place the being removed components.