Main technical characteristics A four-stroke, six-cylinder, in-line water-cooled engine is installed along the longitudinal axis of the vehicle with an inclination at an angle of 20°. The...
Cylinder head characteristics The cylinder head is cast from aluminum alloy. The head has three-spherical combustion chambers. Seats and valve guides are pressed into the cylinder head...
Characteristics of the block of cylinders The cylinder block is cast from special gray cast iron and is one piece with the cylinders. Cylinder diameters Permissible ovality of cylinder mirrors, mm:...
Characteristics of the crank mechanism Pistons Pistons are cast from aluminum alloy. Depending on the vehicle model, the piston crowns may be flat (on «323i») or convex with a height of 2.1 mm (on...
Characteristics of the gas distribution mechanism The engine uses a valve timing mechanism with an overhead camshaft, which is driven by a toothed belt from a toothed pulley mounted on the crankshaft. Valve...
Tightening torques for main threaded connections Tightening torques of the main threaded connections, kgf·m Cylinder head bolts on a cold engine: 1st reception: 3.0-3.5; 2nd reception: 6.0-6.5; 3rd trick:...
Valve clearance adjustment The clearances in the valve drive mechanism are adjusted by slightly opening the cylinder valves. Remove the cylinder head cover and remove the spark plugs....
Removing the cylinder head Disconnect the exhaust pipes of the mufflers from the exhaust manifolds and remove the bracket for their fastening. Remove the air filter and cylinder head...
Installing the cylinder head Thoroughly clean the mating surface of the cylinder head. Remove the oil from the blind holes of the cylinder block with a syringe. Establish a head of...
Disassembly of the cylinder head Place the cylinder head on support 11 12 100. Remove the central oil line. Remove the camshaft sprocket. Set the rocker arms of the intake and exhaust valves...
Cylinder head assembly Install the valves after lubricating the valve guides and valve stems with engine oil. Before pressing the valve stem seals onto the valve guides, install...
Pistons replacement Remove the cylinder head, oil pan and oil pump. Remove the connecting rod caps, making sure that there are marks on them. Remove the pistons with connecting...
Connecting rod replacement Remove the pistons as above. Measure the concentricity of the centers of the holes of the connecting rod heads, the distance «A» between which I should be...
Details of the crank mechanism Details of the crank mechanism: 1 - crankshaft; 2 - liners of main bearings; 3 - inserts with persistent collars; 4 - connecting rod; 5 - shells of connecting...
Removal and installation of the engine Withdrawal Remove the gearbox. Apply alignment marks to the hood hinges and remove the hood. Remove the air filter housing, radiator and distribution tank....
Engine disassembly and assembly Disassembly Install the washed and cleaned engine on a turntable for disassembly. Remove the intake and exhaust manifolds. Remove the ignition distributor and...
Replacement of a back epiploon of a cranked shaft Remove the clutch cover and flywheel. Remove the two bolts securing the crankshaft rear oil seal retainer to the oil pan. Remove the holder and press the gland...
Replacing the flywheel gear rim Disconnect the clutch cover from the flywheel. Remove the flywheel by locking it with lock 11 2 170. Drill a hole approximately 8mm deep in the rim just below...
Details of the gas distribution mechanism Details of the gas distribution mechanism: 1 - camshaft; 2 - locating pins; 3 - intermediate shaft; 4 - intermediate shaft flange; 5 - camshaft pulley; 6 -...
Removal and installation of a camshaft Withdrawal Remove the cylinder head and rocker shafts. Remove the thrust flange and remove the camshaft from the cylinder head bearings. Installation Check the...
Removal and installation of an intermediate shaft Remove the toothed belt. Remove the front cylinder block cover. Remove the ignition distributor. Remove the intermediate shaft by first removing its flange....
Exhaust gas exhaust system Exhaust system: A - on «320»; B - on «323i» 1 - exhaust manifolds; 2 - gasket; 3 - heat-insulating screens; 4 - intake pipes of mufflers; 5 - brackets for...