Vedeneyev M-14P, Maintenance Manual

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Air is fed through the port located, away from the slide valve center and through the oval holes in the
distributor cover to the lower cylinders Nos 4» 5, 6 and 7 for scavenging them during exhaust stroke,
The check valve comprises connection (20), ball (23), spring (22) and bushing (24). It is intended to
preclude oil from the distributor to the compressed air supply pipeline during operation of the engine,
Installed in thrust bearing (17) is a ball valve including ball (4) and seat (5) to pass oil during operation of
the engine to the shank of the slide valve to lubricate the latter. In the course of starting, ball (4) shuts off
compressed air from the distributor to the engine rear cover.
2.2. STARTING VALVE
The starting valve ensures supply of compressed, air to the engine cylinder.
Constructionally, the starting valve includes housing (
c
;) (Ref. Fig, ?), valve (6) with spring (2) and thrust nut
(1), clamping cap (8) and three aluminium sealing gaskets (3) and (4). Starting valve housing (5) is a steel hollow
part. Its outer surface has a hexagon for the wrench and thread on both sides, as well as a hole to pass
compressed air to the inner space.
The housing has a conical seat for the valve face and a thrust bridge to support the spring with a hole for
the valve stem.
Valve (6) is made of alloyed steel. It has a head with a face and a slot for seating tool. The valve stem is
threaded to receive the support spring and haa a hole to lock the nut compreaaing the spring. The valve atera near
the neck is provided with a cylindrical aligning surface with three slots to pass air.
During operation of the engine the valve is closed by the spring and cylinder gas pressure.
To start the engine, compressed air is fed via the pipeline to two radial holes and fills the inner space of the
housing, opens the valve and rushes to the cylinder where it pushes the piston to turn the crankshaft.
2.3. FUEL PRIMING SYSTEM
The M-14Pengine fuel priming system includes: the "Atmos" type priming pump or a hand priming pump
with a pipeline, a nozzle and a pipe with connection.
The nozzle ensures fine pulverization of gasoline to increase evaporation surface and improve mixing of
fuel particles with air for obtaining a homogeneous mixture throughout the mixture collector volume and ail cylinders
of the engine,