is brazed to the other end of the frame. The filter assembly is sealed in the housing with a rubber sealing
ring.
Venturi (14) is inserted into the carburetor barrel from the lower flange side. The nozzle with sleeve are
accommodated in the venturi slot.
2.2.6. Mechanical Acceleration Pump
Piston (6) of the mechanical acceleration pump reciprocates Inside a steel cylinder of valve (9) (Ref. Pig. 2)
pressed in the carburetor body. A wide cylindrical bore in the body near the cylinder communicates with the fuel
chamber of the pressure regulator by a passage drilled in a special boss. Thus, fuel fed from the fuel chamber of
the pressure regulator fills the annular space between the cylinder and the bore wall in the body and gets inside the
cylinder through radial holes drilled in it.
Piston (6) of the mechanical acceleration pump, turned as a hollow thin-walled cylinder, has an internal
partition with four fuel holes iniformly spaced around the circumference. A boss with internal through hole is
provided at the center at one side of the partition. The other side of the partition has a lapped surface.
Two shallow dirt traps are turned on the outer surface of the piston.
Valve (7) being a flat duralumin washer is fitted, with its hole on the cylindrical band at the middle part of
coupling (8). This cylindrical band serves as a valve guide.
Coupling (8) is installed with a small radial clearance in the central through hole of piston (6) to thrust
against the middle bend end.
The coupling is locked against longitudinal play with a lock crimped in the groove on the coupling end
protruding from the piston. Mechanical acceleration pump flat valve (7) moves longitudinally within the guide band
length. In the leftmost position it is tightly pressed by fuel pressure to the lapped surface of the piston partition to
shut off fuel holes; on the other hand when being moved rightward to thrust against the end of the head on the right
end of the coupling, it opens the holes and forms a gap for free passage of fuel.
The coupling flat shank is intended for mating with the slot of adjustment shaft (33). Pressed in the internal
cylindrical bore in the coupling head is a bushing with a central through rectangular hole for passing the flat shank
of the metering needle. The bushing is fixed in the coupling by a round pin pressed in the holes of the coupling and
bushing. Spring (5) constantly presses the mechanical acceleration pump piston assembly to the end face of the
metering needle flat shank. Thus, any longitudinal displacement of the needle causes the same displacement of the
pump piston. The same spring takes up clearance between metering needle trunnion (16) and lever barrel-like roller
(38). The left end of the spring bears against cover (4) of the mechanical acceleration pump. The cover is attached
to the carburetor body by three
Содержание M-14P
Страница 6: ...19 Engine M 14P Front View Figure 1...
Страница 7: ...20 Engine M 14P Rear View Figure 2...
Страница 27: ...40 Arrangement of Airborne Tools in Case Figure 1...
Страница 39: ......
Страница 44: ...57 Engine M 14P Test Run Chart Figure 201...
Страница 67: ...80...
Страница 163: ...176 Crankshaft Thrust Ball Bearing Front Cover Figure 1 Intermediate Crankcase Figure 2...
Страница 166: ...179 Intermediate Grankcase Front Portion Figure 3 Intermediate Crankcase Rear Portion Figure 4...
Страница 173: ...186 Front view Cylinder Figure 1 Rear view...
Страница 174: ...187 1 Inlet Valve 2 Outer Spring 3 Inner Spring 4 Split Retainer 5 Valve Plate Inlet Valve Figure 2...
Страница 178: ...191 Intake Pipe of Cylinders Nos 4 5 and 6 Figure 4 Piston Piston Rings and Piston Pin with Plugs Figure 5...
Страница 180: ...193 Timing Mechanism Schematic Diagram Figure 6 Cam Plate Figure 7...
Страница 189: ...Blower Longitudinal Section View Figure 1...
Страница 191: ...Rear view Mixture Collector Figure 2 Diffuser Figure 3...
Страница 194: ...1 Plate 2 Spring 3 Plate 4 Gear 5 Accessory Drive Shaft Blower Coupling Figure 4...
Страница 204: ...Oil Sump Figure 4...
Страница 216: ...Engine M 14P Gear Train Figure 1...
Страница 247: ...Carburetor AK 14P Operation Diagram Figure 1...
Страница 249: ......
Страница 267: ...OPERATIONS AND TECHNICAL REQUIREMENTS CORRECTIVE ACTIONS CH ECKED BY Carburetor AK 14P Right Side View Figure 201...
Страница 273: ...Carburetor Altitude Control Needle Position Versus Barometric Pressure Barometric Graph Figure 203...
Страница 274: ......
Страница 282: ......
Страница 283: ......
Страница 288: ...T t en 0 CO 0 T K D fi h0 Ol f 01 3 0 F4...
Страница 293: ......
Страница 309: ...SPARK PLUG SD 49SMM MAINTENANCE PRACTICES 1 LIST OF TASK CARDS Title Task Card Uo Removal 201 Installation 202...
Страница 344: ...Generator Electrical Connection Diagram Commutator Side View Figure 3 1 Main Pole 2 Interpole...
Страница 355: ......
Страница 358: ......