1.14. The mechanism of change of the moment of opening and closing of valves (CVVT) on l engines 1,8 and 2,0

Removal

 PERFORMANCE ORDER

  1. Remove the mechanism of an automatic tension of a chain.
  1. Uncover bearings of camshafts and a chain.
  2. Remove camshafts.
  3. Remove the mechanism of change of the moment of opening and closing of valves (CVVT). Fix the hexagonal part of the camshaft intended for a wrench in a vice.

Be careful not to damage the camshaft. Turn out CVVT fastening bolt.

  1. Remove the oil adjusting valve (OCV).
  1. Remove the OCV filter.
  2. Remove the sensor of temperature of oil (OTS).

Check

Do not reuse the fallen mechanism of change of the moment of opening and closing of valves (CVVT) as at the same time it can be deformed.

  1. Do not disassemble the mechanism of change of the moment of opening and closing of valves (CVVT).
  2. At installation of the mechanism of change of the moment of opening and closing of valves (CVVT) it is necessary to use the special tool.

Mechanism of change of the moment of opening and closing of valves (CVVT)

 PERFORMANCE ORDER

  1. Fix the hexagonal part of the camshaft intended for a wrench in a vice. Be careful not to damage the camshaft.
  1. Make sure that the mechanism of change of the moment of opening and closing of valves (CVVT) is not turned on distributive to a shaft.
  1. Tape all openings of the mechanism of change of the moment of opening and closing of valves (CVVT), except one, designated by an arrow in the drawing.
  1. Give compressed air under pressure of about 100 kPa to an opening.
  • The mechanism of change of the moment of opening and closing of valves (CVVT) has to turn without application of external effort.
  • Air supply under more high pressure can lead to blocking of the closing pin (lack of pressure).
  1. When performing the action given in a step 4, a hand take the mechanism of change of the moment of opening and closing of valves (CVVT) and turn it in the direction of an advancing.
  • After separation of the closing pin the mechanism of change of the moment of opening and closing of valves (CVVT) has to move freely in the direction of an advancing.
  • Movement of the mechanism of change of the moment of opening and closing of valves (CVVT) from the maximum provision of delay to the maximum provision of an advancing makes 20 °.
  1. If necessary replace the mechanism of change of the moment of opening and closing of valves (CVVT), otherwise, turn it in the direction of delay before blocking of the closing pin.

Oil adjusting valve (OCV)

 PERFORMANCE ORDER

  1. Measure by an ohmmeter the internal resistance of the oil adjusting valve (OCV). Resistance: 6,9 – 7,9 Ohms at a temperature of 20 °C.
  2. If resistance differs from demanded, replace the oil adjusting valve.
  3. Check operability of the oil adjusting valve (OCV).
  • Give to valve plugs tension from plugs of the rechargeable battery: – be convinced that the coil moves in the direct direction.
  • Disconnect wires from plugs of the rechargeable battery: – be convinced that the coil comes back to a starting position.

OCV filter

Check a condition of the filter and lack of pollution in it. In the presence of pollution clear or replace the filter.

Camshaft (CVVT)

Height of cams of the camshaft of inlet valves: 44,618 mm
Height of cams of the camshaft of final valves: 44,518 mm
Minimum admissible height of cams of the camshaft of inlet valves: 44,518 mm
Minimum admissible height of cams of the camshaft of final valves: 44,418 mm

Installation

 PERFORMANCE ORDER

  1. Install the sensor of temperature of oil (OTS).
  2. Install the OCV filter. Inhaling moment: 41–51 N • m.
  • At assembly observe purity.
  • At repeated assembly of the filter of the oil adjusting valve (OCV) replace a washer.
  1. Install the oil adjusting valve (OCV). OCV inhaling moment: 10–12 N • m.
  • Do not reuse the fallen details.
  • Exclude hit of foreign impurity in the OCV plug.
  1. Carefully insert a camshaft hairpin into an opening of the mechanism of change of the moment of opening and closing of valves (CVVT).
  1. After the CVVT installation on the camshaft screw a bolt, previously having oiled a bolt carving.
  1. Tighten a bolt of fastening of CVVT on distributive to a shaft.
  • Fix the hexagonal part of the camshaft intended for a wrench in a vice. Be careful not to damage the camshaft. CVVT bolt inhaling moment: 66–78 N • m.
  1. Establish a chain on asterisks of camshafts as it is shown in the drawing.
  1. Install camshafts and covers of bearings.
  1. Install the mechanism of an automatic tension of a chain. Inhaling moment: 8–10 N • m.
  1. Remove the stopper blocking the mechanism of an automatic tension of a chain.