FUEL PUMP 702ML - DESCRIPTION AND OPERATION
1. GENERAL
The 702ML fuel pump (referred to hereinafter as "pump" is intended, to supply fuel from the airplane fuel
tanks through the filters to the engine carburetor.
The pump features a reducing chamber detachable housing accommodating two valves;a reducing valve
and a priming valve. Repositioning of the reducing chamber through 180° relative to the pump housing ensures
operation of the pump for RH or LH direction of rotation without changing the position of the pumping unit.
To connect to the' engine, the pump has a special flange and a square drive shank.
2. DESCRIPTION
2.1. Specifications
Pump drive ........................................... .............................................. From engine
Pump rotor direction of rotation ..................... ..................................... LH
Pump speed of rotation:
Maximum (permissible for 30 s) .......................................................... 3000 r/min
Minimum at which continuous jet is ensured. ......... ........................... 200 r/min
Nominal ............................................ .................................................. 2200 r/min
Fuel line inlet and outlet diameter .................. .................................... At least 8 mm
Total delivery of pump (with reducing valve engaged)
without backpressure at 2200 r/min and fuel suction
height of 1 m ........................................ .............................................. At least 400 1/h
Pump delivery at 2200 r/min,backpressure of o
P = 0.1 kgf/cm in delivery line and fuel suction height of 1 m ......... ... At least 175 1/h
Pump delivery at 200 r/min,backpressure of
P = 0.1 kgf/cm in delivery line anf fuel suction height of 1 m ......... .... At least 10 1/h
Maximum permissible pressure in delivery line ........ ......................... Up to 1 kgf/cm
Dry pump mass ........................................ .......................................... Up to 580 g
Pump power consumption ................................ ................................. Up to 0.5 hp
NOTES: 1. In the course of operation seepage of oil to return line from the fuel pump drive should
not exceed 5 droplets per hour.
2. It is allowed to run the pump on foreign-made fuels (Ref. 072.00.00, Appendix 1).
Содержание M-14P
Страница 6: ...19 Engine M 14P Front View Figure 1...
Страница 7: ...20 Engine M 14P Rear View Figure 2...
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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...
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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...
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Страница 247: ...Carburetor AK 14P Operation Diagram Figure 1...
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Страница 344: ...Generator Electrical Connection Diagram Commutator Side View Figure 3 1 Main Pole 2 Interpole...
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