Fuel tank
The fuel tank is stamped from steel sheet. It is installed at the rear right under the bottom of the luggage compartment.
Fuel tank capacity, l:
- «518», «520»: 56;
- «520i» 56 standard, 70 8 special;
- «525», «528»: 70.
Fuel pump
On models «518», «520», «525» And «528» used mechanical fuel pump, «520i» - electric fuel pump. fuel pump car models «518» And «520» Pushrod-driven diaphragm type mechanical fuel pump.
Brand and type: Pierburg PE 16615.
Fuel supply pressure at a crankshaft speed of 4000 rpm and a closed needle valve, kg/cm2: 0.30.
Pump performance at a crankshaft speed of 4000 rpm. not less, l/h: 55.
Pump pusher length, mm: 88.2±0.1.
Pump pusher diameter, mm: 8-0.080-0.012.
Thickness of heat-insulating spacer with gasket, mm: 20.
Fuel pump car models «520i».
Electric fuel pump - roller type, electric motor - with a permanent magnet.
Brand and catalog number 0 580 364 002.
Discharge pressure, kg/cm2: 2.
Productivity, not less, l/h: 110.
Rated voltage, V: 12.
Working voltage. B: 7-15.
Electric motor power, W: 56.
Fuel pump car models «525» And «528»
Mechanical fuel pump brand Solex diaphragm of a different type driven by a pusher.
Fuel supply pressure at crankshaft speed 4000 rpm, kg/cm2: 0.21-0.25.
Pump productivity, l/h:
- at 1000 rpm: 75-76;
- at 6000 rpm: 89-94.
Pusher length, mm: 106.2±0.1.
Thickness of heat-insulating spacer with gasket, mm: 20.
Notes
1. From model year 1978 on BMW «525» And «52V» a diaphragm fuel pump with a mechanical drive of the brand Pierburg type ZE 20.266 with a strainer was installed, driven from the camshaft through a pusher. Productivity at a crankshaft speed of 4000 rpm, not less than, l/h: 60. Brand and type of electromagnetic jet: Pierburg ZK 12946.
2. From model year 1980 on BMW «528i» And «535i» an electric fuel pump of the Bosch brand was installed, catalog number 0 580 464 013. Discharge pressure, not less than, kg / cm2: 2.8. Pump performance, not less than, cm3 / min: 1500. Current consumption, A: 6.5.
3. From model year 1982 on BMW «525i» And «528i/E28» an electric fuel pump of the Bosch brand was installed, catalog number 0 580 464 013, with the same characteristics as the previous pump, except for the discharge pressure, which is 3 kg / cm3.
Fuel pump car models «520i» with 6-cylinder engine
Bosch electric fuel pump, catalog no. 0 580 254 980.
Adjustable discharge pressure, kg/cm2: 5.0.
Pump performance, cm3 / min: 1800.
Consumed current, A: 10.
Air filter
Air filter - with a replaceable dry filter element.
Replacement filter element brand:
- «518», «520»: Purolator PM 1129;
- «525», «528»: Purolator PM 1027 (Microstar AG 2/1).