1. Make sure the toothed belt tension is correct.
2. Return the cold engine start accelerator handle to its original position.
3. Set the piston of cylinder No. 1 to TDC.
4. Remove the toothed belt guard.
5. You will replace the screw plug from the pump housing between the high pressure fuel lines.
6. Screw in an adapter instead of a plug (see illustration).
7. Connect the adapter pusher to the dial indicator.
8. Fix the indicator in the adapter and adjust it with a bias voltage of about 2 mm.
9. Tap the injection pump housing with a light hammer to return the centrifugal governor to its original position.
10. Rotate the crankshaft slowly clockwise until the indicator needle stops moving.
11. Set the indicator needle to 0 with a bias voltage of about 1 mm.
12. Rotate the crankshaft clockwise until the TDC mark matches the reference mark on the housing.
13. Read the indicator reading. For cars manufactured before 6/92, the allowable stroke should be in the range of 0.83-0.97 mm, and for cars manufactured from 7/92 - 0.73-0.87 mm. If the readings obtained during the measurement do not match the permissible values, then it is necessary to perform an adjustment.
14. Turn away for this purpose both bolts of the holding console, and also a bolt of fastening of a support of TNVD.
15. Move the injection pump relative to the axis. In this position, the injection pump can be adjusted to the start of delivery. In this case, a stroke of 0.90 mm should be achieved (cars manufactured before 6/92) or 0.80 (cars produced after 7/92). Allowed tolerance 0.02 mm.
16. Fasten the injection pump with a torque of 25 Nm.
17. Disconnect the adapter and the indicator, install a new sealing ring on the screw plug and screw in the plug with a torque of 20 Nm.
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