Vehicle cooling and lubrication system BMW 3 Series E21

Characteristics of the lubrication system
The engine has a pressure lubrication system. The oil filter is connected in series to the main engine oil line directly after the oil pump. Oil pump The Eaton...

Characteristics of the cooling system
The car uses a liquid engine cooling system with forced circulation of liquid using a rotary pump driven by a V-belt from the crankshaft pulley. The fan is...

Lubrication system device
Lubrication system details: 1 - toothed pulley of the oil pump; 2 - drive chain of the oil pump; 3 - hub; 4 - oil pump housing; 5 - adjusting plate for...

Removal and installation of an oil crankcase
Withdrawal Put the car on a lift or a viewing ditch. Drain the engine oil. Disconnect the steering gear housing from the front axle bracket by unscrewing the...

Removal and installation of the oil pump
Withdrawal Loosen the oil pump drive gear pulley bolts after removing the oil sump. Bend back the retaining plates and remove the oil pump. If necessary,...

Disassembly and assembly of the oil pump
Removing and installing the oil pump is quite simple (cm. « Removal and installation of the oil pump »). Oil pump disassembly Remove plug 1, spring 2 and...

Parts of the cooling system
Cooling system details: A - except «315», «316» from model year 1981; IN - «315», «316» from model year 1981. 1 - water pump; 2 - water pump roller; 3 - hub; 4...

Removing the water pump
Disconnect the wire from the terminal «—» battery. Unscrew the radiator filler plug and open the valve of the body interior heater by placing the switch handle...

Disassembly and assembly of the water pump
Press the pump drive pulley with a universal double-lever puller. Remove the circlip and press the impeller and bearing off the shaft using a press. Remove the...

Filling and checking the cooling system
Filling Open the body heater tap and slowly pour coolant into the radiator. Close the radiator with a stopper, turning it to the second stopper. Warm up the...

Removal and installation of the thermostat
Removing and installing the thermostat is quite simple. Check the opening temperature of the main valve and its piston stroke at this temperature (see...