3. LUBRICATION SYSTEM UNITS
3.1. OIL PUMP MN-14A
The oil pump is intended to deliver oil from the tank to the engine oil gallery and to scavenge oil from the
oil sump to the tank.
Specifications
Direction of rotation ......................................... ................................... Left
Drive transmission ratio ....................................................................... 1.125
Pump drive shaft speed of rotation:
Maximum (for up to 10 min) .................................. ............................. 3319 r/min
Minimum ..................................................... ....................................... 580 r/min
Working fluid ................................................. ..................................... Oil MS-20 GOST 21743-76
Pump delivery at drive shaft speed of 2400 r/min:
Delivery section:
At oil pressure of (5±0.2) kgf/cm in oil gallery and oil temperature of 50 to 60 °G ........................... 516 1/h
At cap plugged and outlet backpressure of (6±0.2) kgf/cm
2
........................................ Not less than 900 1/h
Scavenging section at outlet backpressure of (1±0.2) kgf/cm
2
and oil temperature of 75 to 125 °C……………Not
less than 1460 1/h
The oil pump comprises a housing, drive shaft, driven shaft with gear rims, four gears, reducing and check
valves, packing gland and other parts.
The pump housing assembly is a magnesium casting comprising scavenging section housing (9) (Ref.
Fig. 2), delivery section housing (4), upper cover (14) and lower cover (2).
The scavenging section housing has two wells accommodating gears (10) and (12), holes for studs and
shafts, holes for inlet and outlet of oil and locating recesses.
The scavenging housing bottom makes the partition between the scavenging and delivery sections.
Delivery section housing (4) has two wells for gears (6) and (15), oil inlet and outlet holes, holes with
pressed-in bronze bushings serving aa shaft lower bearings, flange with holes for studs (7) adapted to attach the
housing to the rear cover and six studs (18) for attachment of lower cover (2).
The lower flange wells accommodate delivery section gearing, reducing and check valves and oil pressure
measuring connection.
Housing upper cover (14) has a locating collar, two holes with pressed-in and locked bronze bushings
being the pump shaft bearings and four holes for passing studs (11) (Ref. Fig. 3) which secure the pump
housings.
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...
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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...
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