Adjusting the boost corrector ZIL-5301

Adjusting the boost corrector D-245

The beginning of the movement of the rod should occur at an air pressure in the above-diaphragm space equal to 0.005-0.010 MPa

In the absence of pressure in the above-diaphragm space, the average cyclic flow is set by moving the stop 46 (see Fig. 1) and should be 60-70 mm ³ cycle at a pump camshaft rotation speed of 550 min ^-1.

Injection pump regulator: 39 – boost corrector housing; 40 – spring lever; 41 – starting enrichment spring; 42 – finger; 43 – earring; 44 – regulator spring; 45 – rack rod; 46 – emphasis; 47 – boost corrector cover; 48 – main regulator lever; 49 – pin; 50 – bushing; 51 – diaphragm; 52 – plate; 53 – boost corrector cover; 54 – rod; 55 – screw; 56 – bolt; 57 – idle spring; 58 – corrector rod; 59 – adjusting shims; 60 – hard stop; 61 – corrector body; 62 – bracket; 63 – bolt; 64 – heel; 65 – axis; 66 – intermediate lever; 67 – speed regulator housing; 68 – lever axis; 69 – cargo; 70 – regulator coupling; 71 – adjusting screw; 72 – cargo axle

Adjustment of the start of movement of the diaphragm 51 (rod 54) must be done by changing the pre-compression of the spring by screwing in or unscrewing the sleeve 50.

The movement of the sleeve 50 towards the diaphragm increases the air pressure corresponding to the start of the diaphragm; the movement of the sleeve away from the diaphragm reduces the air pressure corresponding to the start of the diaphragm.

After adjusting the start of movement of the diaphragm (rod), install pin 49 into the hole in the corrector body.

When installing the pin, make sure that its upper end does not protrude above the upper plane of the CPN body, for which, if necessary, turn the corrector bushing 50 in one direction or another by no more than 30°.

The pressure at which the diaphragm (rod) begins to move must remain within the established limits.

The pressure corresponding to the end of the CPN response is determined by a series of sequential performance measurements in the pump sections at the corresponding rotation speed of the fuel pump camshaft.

The end of the CPN operation should be at a frequency of 550 min ^-1 and a pressure of 0.012-0.015 MPa.

Set the nominal rotation speed of the pump camshaft to 1200 min ^-1, create a pressure in the above-diaphragm space of 0.06-0.065 MPa and make sure that the pump provides the nominal flow in accordance with the adjustment table

Install the fitting bolt and the corrector housing cover.