5.3.3. Check and adjustment of the beginning of injection of TNVD
Audi demands to carry out an inspection of the beginning of injection on the working engine by means of an electronic tester. As the specified device available can not be, adjustment on the stopped engine by means of a special core is described here. The specified way is not exact and can be applied only as supportive application. For more exact check it is recommended to address on HUNDRED.
The beginning of injection of TNVD has to be checked and be regulated surely after a tension, removal or replacement of a gear belt, and also weakening of bolts of fastening of TNVD or cogwheels of a belt.
CHECK
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PERFORMANCE ORDER |
| 1. Establish a bent shaft in the provision of VMT of the piston of the first cylinder, address the subsection Installation of the Piston of the first cylinder in VMT. | | 2. Fix the camshaft by means of an adjusting ruler, address the subsection Installation of the Piston of the first cylinder in VMT. |
| 3. Now VW–3359 core has to enter an opening of a nave of a cogwheel and the holder of TNVD. Thus, the provision of TNVD is fixed. The core has to enter so that the opening (an arrow on an accompanying illustration) stood on distance about 3 mm before a pump nave. |
ATTENTION Instead of a core of VW-3359 it is possible to use any core of 6 mm, for example, a drill.
| | 4. If the core does not enter TNVD opening in spite of the fact that marking VMT and position of the camshaft coincide, it is necessary to check adjustment of the beginning of injection of fuel again. | | Adjustment of the beginning of injection | | 5. Weaken fastening bolts –1 cogwheels of TNVD so that the wheel of a gear belt could turn concerning a pump nave. |
ATTENTION The central bolt of fastening on a nave of the pump should not be turned off, otherwise the pump will be displaced. After that it will not be possible to adjust it in house conditions.
| | 6. Turn TNVD nave so that the core entered. |
ATTENTION The core has to enter so that the opening (an arrow on an illustration) stood on distance about 3 mm before a pump nave.
| | 7. The core has to enter so that the opening (an arrow on an illustration) stood on distance about 3 mm before a pump nave. | | 8. Take out a core. | | 9. Remove an adjusting ruler. | | 10. Turn a bent shaft on 2 turns in the direction of rotation of the engine and again establish in the provision of VMT of the piston of the first cylinder. Check the provision of markings on a flywheel and distributive to a shaft. | | 11. Record TNVD cogwheel a core. If the core does not enter TNVD opening, repeat adjustment process. | | 12. Take out a core. | | 13. Establish laying of a cover of a head of cylinders. Fix a cover, the moment of an inhaling of 10 N of m. |
| 14. Establish the top cover of a gear belt. | | 15. Insert a plastic stopper into a coupling casing opening. |
ATTENTION In conclusion check in dynamics the beginning of injection of TNVD (work HUNDRED). After exact adjustment of the moment of the beginning of injection it is necessary to tighten 3 bolts of fastening of a cogwheel of TNVD the moment 20 HH • m and then to tighten on 90 ° (1/4 turns). If bolts were tightened in the specified way, after an otvorachivaniye they need to be replaced with new.
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