Belarus 1822.3, Руководство оператора

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2022.3-0000010 OM
282
6.4.6.7 Operation 77. Check and adjustment of fuel injection timing advance
adjusting angle
When the engine start is difficult, while smoky exhaust as well as while changing
and mounting of the fuel pump after checking on the stand in 2000 hours of tractor opera-
tion or while engine repair, it is required to check fuel injection timing advance adjusting
angle on the engine.
On the engines -260.4S2 and -260.9S2 with the fuel pump 10 1i the fuel
injection timing advance adjusting angle shall be 6±0,5 degrees of the crankshaft turn to
the top dead center.
Angle check shall be carried out in the following order:
- set the regulator control levers into the position corresponding to max fuel supply;
- disconnect the high pressure pipe from the first pump section adapter and instead
of it connect the ignition tester (coupling nut with a short pipe to which by means of a rub-
ber pipe, a glass pipe is connected having inner diameter of 1…2mm, see figure 6.4.49);
1 – glass pipe; 2 – rubber connecting pipe; 3 – high pressure pipe section; 4 –
washer; 5 – nut.
Figure 6.4.49 – Ignition tester
- turn the engine crankshaft with the key clockwise until fuel without air bubbles ap-
pears from the ignition tester glass pipe;
- remove part of fuel from the glass pipe by shaking it;
- turn the engine crankshaft (contraclockwise) for 30-40°;
- slowly rotating the engine crankshaft clockwise, observe the fuel level in the pipe,
at the moment when fuel starts to uplift stop rotating the crankshaft;
- determine the position of the degree scale on the damper housing (figure 6.4.50)
in relation to pin 3 which is fixed on the distribution cap 1.
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