2. Drain the coolant.
3. Install the dial indicator.
a) Unscrew the fuel pump head plug bolt.
b) Using the adapter, install the pointer indicator into the hole in the plug of the distribution head. The indicator needle should fit onto the pump plunger.
4. Turn the crankshaft (clockwise) so that the mark on the pulley does not reach the TDC indicator on the oil pump housing by approximately 25-30°.
5. Disconnect the cold start advance changeover switch:
a) Using a screwdriver, turn the control lever approximately 20° counterclockwise.
b) Install a metal plate 8-10 mm thick between the lever and the plunger of the cold start system thermostat.
6. Check and adjust the injection advance angle.
a) Set the dial indicator to zero.
b) By slightly turning the crankshaft left and right, make sure that the indicator arrow does not move away from zero.
c) Smoothly rotating the crankshaft clockwise, align the mark on the pulley with the TDC indicator on the oil pump housing.
d) Read the indicator readings:
Plunger stroke - 0.55 - 0.61 mm
7. If the plunger stroke does not correspond to the recommended values, then:
a) Unscrew the nuts of the high-pressure pipelines from the fuel injection pump side.
b) Loosen the fuel injection pump fastenings (don't forget about the rear support).
c) Set the required plunger stroke by slightly turning the fuel injection pump body as shown in the figure.
If the plunger stroke is less than recommended, turn the fuel injection pump towards the engine and vice versa.
d) Tighten the fuel injection pump fasteners, the rear support bolt to a torque of 47 Nm, and the flange nuts to a torque of 18 Nm.
d) Recheck the timing advance angle setting.
e) Tighten the high pressure fuel line nuts to 29 Nm.
8. Remove the metal plate between the lever and the plunger of the cold start thermostat.
9. Remove the dial indicator. Install a new sealing washer on the pump head bolt and tighten it to 17 Nm.
10. Bleed the fuel supply system by loosening the high-pressure fuel line nuts on the injector side and turning the engine with the starter. Tighten the high-pressure fuel line nuts.
11. Start the engine and check for fuel leaks.