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

M112

Verification of the basic provision of a balancing shaft of the M112 engine

1 — Grooves in camshafts
2 — the Blocking plate of the right camshaft
3 — the Opening in a back counterbalance

4 — the Back counterbalance
And — the Pin in a case
In — Risk on a forward counterbalance

 PERFORMANCE ORDER

  1. Remove transmission assembly (see the Head Automatic transmission).
  2. Remove a driving disk.
  3. Check basic position of camshafts (see the Section Check and adjustment of basic position of camshafts).

On the models equipped with the air pump it is necessary to dismantle also right combined valve which sealing laying is subject to replacement without fail.

  1. Establish blocking plates (2) on the right and left heads of cylinders, having filled them in grooves (1) of camshafts.
  2. At the correct installation of a balancing shaft the opening (3) in a back counterbalance (4) has to be combined with a nest in an engine case, - fill in openings a pin with a dimeter of 8.40 ÷ of 8.55 mm. Make sure also of combination risks (V) on a forward counterbalance with a pin (A) in a case, - risk and a pin are located in about 22 cm below the interfaced surface of a head and are looked through through a window in the left cover of the GRM drive.
  3. At violation of basic installation the balancing shaft needs to be replaced.
  4. Working as it should be the return to a dismantle order, install into place all being removed components.

M628

Verification of the basic provision of a balancing shaft of the M628 engine (1 of 2)

1 — the Gear wheel of the inlet camshaft
2 — the Gear wheel of the final camshaft
3 — the Cover
3a — Nizhny Novgorod a bolt

3b — the Top bolt
5 — Pruzhina
7 — the Asterisk of a balancing shaft
9 — Adjusting tags

Verification of the basic provision of a balancing shaft of the M628 engine (2 of 2)

5 — Pruzhina
6 — Marking

7 — the Asterisk of a balancing shaft

 PERFORMANCE ORDER

  1. Uncover heads of cylinders (see illustrations of the Detail of installation of covers of heads of cylinders of the M682 engine (1 of 2) and Details of installation of covers of heads of cylinders of the M682 engine (2 of 2)).
  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. Turn out the lower bolt (3a) of a cover (3), - for the purpose of ensuring access to a bolt turn a bent shaft in the normal direction.
  4. Bring the piston of the first cylinder into the provision of VMT.
  5. Turn out the top bolt (3b) and uncover (3).
  6. Remove the centrifuge.
  7. Make sure that the natyazhitel (9) provides the required effort of a tension of a gas-distributing chain.
  8. Establish a cover (3) on a case and fix it by the top bolt (3b).
  9. Turn a bent shaft on two whole revolutions in the normal direction, again having brought the piston of the first cylinder into the provision of VMT.
  10. Again uncover (3).
  11. Make sure of correctness of basic installation of camshafts (see the Section Check and adjustment of basic position of camshafts).
  12. Check correctness of basic installation of a balancing shaft which spring (5) has to hold the position shown in a picture, and marking (6) on an asterisk (7) to be slightly displaced concerning situation "for 12 hours".
  13. Working as it should be, the return to a dismantle order, install the being removed components on the places.
  14. 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).