Vedeneyev M-14P, Руководство по обслуживанию

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screws; steel washers are placed under "the screw heads. The joint between the cover and the
body is sealed with a paronite gasket.
A through threaded hole made at the center of cover (4) receives connection (34). The joint
between the connection and the cover is sealed with a rubber sealing ring.
Adjustment shaft (33) is inserted in connection (34) through the internal through hole. The shaft
has a slot to receive the flat shank of coupling (8), protruding from the piston assembly of the mechanical
acceleration pump. Union nut (2) connected with shaft (33) by a thrust pin is screwed onto the second
threaded end of the connection to bear against the hexagon. The thrust pin is pressed to stop in the hole
made in the side surface of the adjustment shaft. Pressing is carried out through one of four radial holes
drilled on the cylindrical band of union nut (2).
The thrust pin end protruding from the shaft is accommodated in a groove inside the nut so that
the shaft is free to rotate in the nut and connection. Longitudinal travel of the shaft is limited by the width of
the nut internal bore.
The gap between 'the shaft and connection is sealed by a rubber ring lodged in the shaft groove.
A slot for a screwdriver is milled on the adjustment shaft end protruding from the union nut hole. In
adjustment, the metering needle is turned and moved by a screwdriver inserted into the adjustment shaft
slot owing to interconnection of shaft (33)» coupling (8) and the metering needle.
To limit the shaft turn during adjustment of the carburetor, a special device, stop with holder,is
mounted on the outer face of the union nut. This assembly comprises two parts: thrust pin (35) and pin
holder (1) made of spring steel in the form of flat round washer with two tabs arranged in diametrically
opposite directions. The hole of the holder short tab receives thrust pin (35) whose end is riveted on the
tab. The holder longer tab is hooked and has a locking hole at the end. The free end of the thrust pin is
inserted into one of six holes uniformly spaced around the outer face of union nut (2), while the holder is
fitted with its central hole onto the splined end of the adjustment shaft. Its bent end tightly embraces (owing
to springi-ness of the material) the side surface of the union nut thus retaining the assembly on the
carburetor.
The adjustment shaft turn is limited by pin (35) bearing against the thrust pin. Thus, the range of
adjustment shaft turn is less than one revolution for the pin diameter.
To ensure similar adjustment range of the metering needle in both directions, i.e. towards
increasing and decreasing fuel consumption, the stop with holder is set by the Supplier in such a position
which allows the shaft to turn through about the same angle in both sides.
For more reliable attachment and to preclude exceeding of the permissible adjustment range of the
metering needle in service, the stop with holder is locked with wire