2.5.1.4. 5-cylinder diesel engine

Check

PERFORMANCE ORDER
1. To remove the top casing of a gear belt.
2. To weaken bolts of fastening of the generator and a tension eye on one turn.
3. To unscrew a tension eye of a water pomp and to wring out the generator up.
4. To strike with the rubber hammer a gear belt between a driving gear wheel of a cam-shaft and a gear wheel of a water pomp.
5. Turn of the handle to weaken a spring of the control VW 210 device.
6. To install the control device between a driving gear wheel of a cam-shaft of a water pomp so that the gear belt passed between a sled and the measuring probe of the control device.
7. To measure by the control device a tension of a gear belt and to remember.
8. To turn the crankshaft on one turn and to repeat measurement.
9. To calculate average value of two measurements and to compare to the required value. The required value: value of a scale 12... 13 on the measuring VW 210 device.
10. If average value differs from demanded, to make adjustment of a gear belt.

Manual adjustment of a tension of a gear belt till September, 1991.

PERFORMANCE ORDER
1. To pull a spring of the control device to value of a scale 12... 13. Sideways the measuring probe from the control device the steel uvula on which the white horizontal strip is put acts.
2. To install the control device.
3. To weaken bolts of fastening of a water pomp (bolts are shown in the drawing at the left and to the right of the screw-driver). To turn by means of mount or the big screw-driver a water pomp, as shown in the drawing, so that on the control device the white horizontal strip coincided with edge of the case.
4. To tighten fastening bolts the moment of 20 N · m.
5. To turn the crankshaft on one turnover of the direction of rotation and to repeat measurement, if necessary to repeat adjustment.
6. To screw a tension eye of a water pomp and to adjust a tension of a maple belt of the generator (see subsection 2.12.1).
7. To establish the top casing of a gear belt.

Prevention

If near at hand there is no adjusting and control tool (the abroad, accident), the tension of a belt can be made by make-shifts.

To pull a gear belt so that at impact on it big and a forefinger it was twisted by fingers on 90 °.

To avoid the raised engine turns so far a belt tension, whenever possible in the nearest future, it will not be checked by the control device.


Semi-automatic adjustment of a tension of a gear belt since October, 1991.

PERFORMANCE ORDER
1. To weaken on 1 turn a nut of fastening of the sprung tension roller on a head of the block of cylinders. There is an automatic, required tension of a gear belt.
2. To turn the engine on 1/4 – 1/2 turns (from 90 ° to 180 °) in the direction of rotation.
3. To tighten a fastening nut the moment of 15 N · m.