Mercedes-Benz G-class (W463) since 1999 of release
1. Introduction
2. Governing bodies and operation receptions
3. Current leaving and service
4. Engine
4.1. Check of kompressionny pressure, assessment of a condition of cylinders
4.2. Engine check by means of the vacuum gage
4.3. Replacement of a belt of a drive of auxiliary units and elements of the mechanism of its tension
4.4. Check of pressure of impellent oil
4.5. Calculation of a consumption of oil
4.6. Check and adjustment of base provision of camshafts
4.7. Verification of the base provision of a balancing shaft (only M112 engines and 628)
4.8. Check of a condition of a chain of a drive of GRM on the M628 engine
4.9. Check of correctness of installation of a corner of an advancing of ignition on petrol models
4.10. Removal and installation of the power unit
4.11. Removal and installation of support of a suspension bracket of the power unit
5. Systems of cooling, heating, ventilation and air conditioning
6. A power supply system and production of the fulfilled gases
7. Systems of electric equipment of the engine
8. Automatic transmission
9. Transmission line
10. Brake and auxiliary systems
11. Suspension bracket and steering
12. Body
13. Onboard electric equipment
14. Schemes of electric connections


 







4-6-proverka-i-regulirovka-bazovogo-polozheniya-raspredelitelnykh-valov.html

4.6. Check and adjustment of base provision of camshafts

Petrol models

Check

Installation of base provision of camshafts of petrol M112/113 engines



Details of installation of covers of heads of cylinders on petrol M112/113 engines (on example М112)

1 — the Top panel of furnish of the engine with the built-in air purifier
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 — Left сапуны

 PERFORMANCE ORDER

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

On the models equipped with the air pump, before installation of the right blocking pin it is necessary отболтить the combined valve. Segments of a chain (1) should be combined by Omednennye with labels (4) on asterisks of camshafts, - for the purpose of achievement of demanded result it can be necessary to turn a cranked shaft to 14 times.

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

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. Operating 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. Establish the Hall sensor.
  4. Establish a natyazhitel of a chain.
  5. Make sure of correctness of combination of adjusting labels, then establish to the place of a cover of heads of cylinders.
  6. In summary 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 base provision of camshafts on petrol M112/113 engines (on example М112)

 PERFORMANCE ORDER

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

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

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

Diesel models

М612

Verification of the base 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 furnish of a cover of a head of cylinders
2 — the Panel of furnish of the air distributor
3 — the Branch pipe сапуна
5 — the Basic arm of a plait of electroconducting
7 — the Cover of a head of cylinders

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

 PERFORMANCE ORDER

  1. Remove nozzles (Y76) (see. Head of the Power supply system and production of the fulfilled gases).
  2. Uncover heads of cylinders.
  3. Remove the fan of system of cooling with the vyazkostny coupling (see. Head of System of cooling, heating, ventilation and air conditioning).
  4. Having turned a cranked shaft in the normal direction, bring the piston of the first cylinder into situation VMT, - labels of a camshaft and a cover of its bearing should 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 (And) in a gear wheel (2) inlet camshafts.
  6. At the correct base installation of a label (In) gear wheels of camshafts (1 and 2) should appear combined. Besides, there should be a combination of the labels put on bodies of shaft and a cover of their bearings (arrow).
  7. In case of need remove camshafts and establish them into place, achieving the correct combination of labels.
  8. Operating as it should be, the return to a dismantle order, establish into place acting in film components.
  9. In summary 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. Head of System of electric equipment of the engine).

М628

Installation of base provision of camshafts of the engine of a series 628

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

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

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

1, 4, 5 — Screws
2 — the Inlet air line
3 — the Cover of a head of cylinders
3а — 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 — the Sensor of the Hall of a camshaft
Y83 — the Valve switch of an otsechka of inlet port

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

5 — the Screw
5а — the Bolt
6 — the Cover
14 — the Left inlet air line
15 — the Right inlet air line
16 — the Panel of furnish of the left head of cylinders
17 — the Panel of furnish of the right head of cylinders

В28 — the pressure Sensor
N14/2 — the Target cascade of system of preheat
N14/2x1 — the Socket of electroconducting of the target cascade of system of preheat
N14/2x2 — the Socket of electroconducting of the target cascade of system of preheat

 PERFORMANCE ORDER

  1. Remove covers of heads of cylinders.
  2. Remove an intermediate cooler (Intercooler) of system of a turbo-supercharging (see. Head of the Power supply system and production of the fulfilled gases).
  3. Having turned a cranked shaft in the normal direction, bring the piston of the first cylinder into situation VMT.
  4. Check the base provision of camshafts, - gear wheels should be developed by labels (In) to each other, besides, there should be a combination of the labels put on bodies of shaft and a cover of their bearings (arrow).
  5. In case of need make the corresponding adjustment.
  6. Operating as it should be, the return to a dismantle order, establish into place acting in film components.


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4.7. Verification of the base provision of a balancing shaft (only M112 engines and 628)