Engine cooling and lubrication system BMW 5 Series E12

Lubrication System Specifications
Engines of all modifications have a pressure lubrication system. The oil pump is rotary, with the exception of the BMW "520" from the 1978 model year and the...

Cooling system specifications
The cooling system is liquid, with forced circulation of liquid using a centrifugal pump. On cars of the "525" and "528" models, an expansion tank with...

Removal and installation the oil pan
Removal Place the vehicle on an inspection pit or lift. Drain the engine oil completely. Remove the anti-roll bar. Loosen the mounting bolts and remove it by...

Removal and installation the oil pump
Removal To access the oil pump, remove the oil sump. Remove the oil pump drive sprocket, unscrew the pump housing mounting bolts and the pump mounting brackets...

Main parts of the oil pump
Main parts of the oil pump: 1 - drive sprocket; 3 - shims for adjusting the tension of the drive chain; 19 — outer rotor; 20 - inner rotor; 24 — pressure...

Disassembling and checking the oil pump
Disassembly Remove plug 1, spring 2 and plunger 3 of the pressure reducing valve. Remove cover 4 of the oil pump. Wash and blow out the oil pump parts with...

Oil filter
The oil filter is full-flow, connected in series to the main oil line. Depending on the car model, it is made in the form of a removable filter element or has...

Assembly and installation of the oil pump
The oil pump assembly is performed in the reverse order of disassembly. In this case, it is necessary to check the gaps between the outer rotor and the oil...

Replacing the oil dipstick guide tube on BMW 525, 528 engines
Remove clamp 1 (see photo) and remove the oil dipstick guide tube inserted into the cylinder block. Insert the new tube, strictly maintaining its protrusion...

Engine cooling system parts
Cooling system parts for cars with manual transmission: 1 - radiator; 2 - plug with safety valve; 3 - water pump assembly; 4 — impeller; 5 — pump body; 6 —...

Water pump for BMW «518», «520» cars
Removal the water pump Disconnect the wire from the negative terminal of the battery. Unscrew the radiator filler plug and open the interior heater valve by...

Water pump for BMW «525», «528» cars
Removal and installation the water pump Disconnect the wire from the "-" terminal of the battery, drain the liquid from the cooling system. Remove the...

Fan with viscous clutch of the BMW engine drive «525», «528»
A fan with a viscous coupling forms a single unit, the parts of which are adjusted at the manufacturing plant. In case of a fan or coupling failure, the unit...

Adjusting the tension of drive belts
The normal deflection when pressing with your thumb on the branch between the alternator and fan pulleys for the alternator drive belt and when pressing with...

Filling the cooling system
For models "518", "520", on which the engine cooling system does not have an expansion tank, no special precautions are required when filling the system. In...

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