Vedeneyev M-14P, Maintenance Manual

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passed through the hole at the holder end and in the attachment bolts of the mechanical acceleration
pump cover. The wire is sealed with the Supplier's seal.
2.2.7. Idle Needle
A threaded hole in a special boss above the link chamber receives idle adjustment needle coupling sealed
at the end with a lead gasket. The coupling is fixed in the boss against turning with two brass round pins. Made
inside the coupling at the side of its portion screwed into the body is a threaded hole to receive the idle needle
assembly; twelve longitudinal slots spaced uniformly around the circumference are made closer to the outer end.
Idle needle assembly comprising needle (9) (Ref. Pig. 5) with a tapered end, two retaining balls with a spring in-
between is screwed into the coupling so that the tapered end of the needle enters the passage drilled in the
carburetor body.
The retaining balls forced outside by the spring enter diametrically opposite slots of the coupling to fix the
needle in the required position.
When the needle is rotated by a screwdriver inserted in the slot on the needle head, clicks are heard; the
number of clicks allows to estimate the needle longitudinal travel.
Screwed on to the outer end of the coupling is cap (11). Flexible textolite sealing gasket (12) is arranged
inside the cap to seal the coupling end face. To connect the idle passage with the nozzle hole, a hole is drilled in
the boss cast on the lever chamber wall and closed with a production plug on the outside.
2.2.8. Supply of Fuel to Carburetor
Fuel is fed to the carburetor through fuel inlet connection (30) (Ref. Pig. 2). The connection is locked with
nut (29). The connect]on-to-body joint is sealed with rubber ring (28). On passing the connection, fuel gets to fuel
filter (31). The fuel filter assembly driven into the boss threaded hole is located under the fuel inlet boss. The filter
connection face is sealed with ring (32). Plugs with rubber sealing rings driven into the holes at the top and bottom
of the fuel chamber of the pressure regulator serve to drain fuel from the carburetor.
2.2.9. Altitude Control
Cover (11) (Ref. Fig. 6) closing the aneroid space doubles as a body for the altitude control.
The body aneroid space accommodates bushing (16) inserted in the aneroid space hole and sealed in it
by three rubber sealing rings (3). The bushing is secured to the space bottom by two screws (4) locked by
punching. Plug (2) with rubber sealing ring (1) is screwed into the threaded hole from the outside. Needle (5) is
connected with aneroid capsule (12) by spring (10), thrust ring (9) and retaining ring (8).