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4.3. Replacement of a belt of the drive of auxiliary units and elements of the mechanism of its tension

Belt

Petrol models (M112/113)

Details of installation of a belt of the drive of auxiliary units on petrol models (M112/113)

 PERFORMANCE ORDER

  1. Remove ventilatory assembly (1 and 2) (see the Head of the Cooling system, heating, ventilation and air conditioning).
  2. Having developed a hairpin (4) of a tension roller (5) counterclockwise, weaken a belt (3) and block a roller by means of a core with a diameter of 5 mm.
  3. Take off a belt and attentively study its state (see the Head the Current leaving and service). In case of need make replacement.
  4. Installation is made upside-down, - begin landing of a belt with a tension roller and act as the numbering specified illustrations. Do not forget to adjust effort of a tension of a belt (see the Head the Current leaving and service).

Scheme of laying and order of landing to pulleys of a 6-costal belt of the drive of auxiliary units of M112/113 engines

Above — Models without To/in
Below — Models with To/in
1 — the Pulley of a bent shaft
2 — the Directing pulley 2/pulley K/V compressors
3 — the Pulley of the steering pump

4 — the Directing pulley
5 — a generator Pulley
6 — the Pulley of the water pump and fan of the cooling system
7 — the Tension roller

Diesel models

M612

Details of installation of a belt of the drive of auxiliary units on the diesel models equipped with the M612 engine

3 — the Tension roller


 PERFORMANCE ORDER

  1. Remove the viscous coupling of the drive of the fan of the cooling system (see the Head of the Cooling system, heating, ventilation and air conditioning).
  2. Having developed a natyazhitel (2) and having blocked him a pin (4), weaken, then take off a driving belt (1).
  3. Study a condition of a belt (see the Head the Current leaving and service), in case of need make its replacement.
  4. Installation is made upside-down, - begin landing of a belt with a tension roller (see an illustration below). Do not forget to adjust effort of a tension of a belt (see the Head the Current leaving and service).

Scheme of laying of a belt of the drive of auxiliary units of the M612 engine

1 — the Pulley of a bent shaft
2 — the Tension roller
3 — the Pulley of the water pump and fan of the cooling system
4 — a generator Pulley

5 — the Directing pulleys
6 — the Pulley of the steering pump
7 — the Pulley of the K/V compressor

M628

Details of installation of a belt of the drive of auxiliary units on the diesel models equipped with the M628 engine


 PERFORMANCE ORDER

  1. Remove a cooling system fan casing (see the Head of the Cooling system, heating, ventilation and air conditioning).
  2. Install the screen of protection of the radiator/condenser of the air conditioning system (a metal or plastic leaf by the sizes about 400x680x1 mm).
  3. Remove an intermediate cooler of system of a turbo-supercharging (Intercooler) (see the Head of the Power supply system and production of the fulfilled gases).
  4. Having developed a natyazhitel (2) clockwise, weaken a belt (1) and remove it from the engine.
  5. Study a condition of a belt (see the Head the Current leaving and service), in case of need make its replacement.
  6. Installation is made upside-down, - begin landing of a belt with a tension roller (see an illustration below). Do not forget to adjust effort of a tension of a belt (see the Head the Current leaving and service).

Scheme of laying of a belt of the drive of auxiliary units of the M612 engine

1 — the Pulley of a bent shaft
2 — the Pulley of the K/V compressor
3 — the Pulley of the steering pump
4 — the Directing pulley

5 — a generator Pulley
6 — the Pulley of the water pump
7 — the Intermediate roller

Natyazhitel

Petrol models (M112/113)

Details of installation of an automatic natyazhitel of a belt of the drive of auxiliary units on petrol models (M112/113)


 PERFORMANCE ORDER

  1. Take off a driving belt (3) (see above).
  2. Develop a tension roller (4a) counterclockwise and record it by means of a core with a diameter of 5 mm.
  3. Having turned out self-cut fixing screws, remove a natyazhitel (4) from a GRM drive cover.
  4. Installation is made upside-down.

Diesel models

M612

Details of installation of an automatic natyazhitel of a belt of the drive of auxiliary units of the M612 engine

 PERFORMANCE ORDER

  1. Take off a driving belt (see above).
  2. Having turned out a fixing bolt remove from assembly of a natyazhitel (5) a tension roller (4).
  3. Take a pin (2), the fixing natyazhitel (5) and, having turned out fixing bolts, remove the last from a GRM drive cover.
  4. Installation is made upside-down.

M628

Details of installation of an automatic natyazhitel of a belt of the drive of auxiliary units of the M628 engine

 PERFORMANCE ORDER

  1. Remove an intermediate cooler of system of a turbo-supercharging (Intercooler) (1) (see the Head of the Power supply system and production of the fulfilled gases).
  2. Take off a driving belt (2) (see above).
  3. Turn out fixing screws (4), - access to the screw will open through selection in a pulley (5) at an engine provorachivaniye in the normal direction, - and remove a natyazhitel (3).
  4. Installation is made upside-down.