Disconnect the wires from the battery terminals.
Disconnect the radiator outlet hose and drain the coolant.
Disconnect the cooling system hoses and electrical wires from the cylinder head.
On carbureted engines
Disconnect the fuel supply and fuel drain hoses.
Remove the oil dipstick pipe bracket bolt and the starter bracket bolt to the intake manifold
Disconnect the throttle control rod from the throttle control sector, then move the rod to the side, after loosening the nuts of its fastening to the intermediate support.
Disconnect the vacuum hose from the brake booster.
On car models «320i»
Remove the air supply cover.
Disconnect the vacuum hose from the brake booster.
Disconnect the throttle control link from the throttle control lever and remove the link from its mounting bracket.
Loosen the fittings of the injector injection pipelines and disconnect the pipelines from the mounting brackets.
Turn away bolts of fastening of soaking-up pipe of the 3rd cylinder.
Disconnect fuel lines from injectors.
On car models «318i»
Disconnect the fuel line from the starter injector and the hose from the auxiliary air valve.
Disconnect the throttle control link» .yaga control of the latter, having previously removed the rod from the bracket.
Disconnect the plug connector of the contactless ignition system switch and remove the electrical wire from the mounting brackets.
Disconnect the vacuum hoses from the vacuum regulator of the ignition distributor and unscrew the bolts securing the bracket to the intake manifold.
Loosen the oil dipstick pipe bolt.
Turn out unions of pipelines of giving of fuel from atomizers.
On all engines
Remove the cylinder head cover.
Remove the ignition distributor cap.
Set the piston of the 1st cylinder to the TDC of the compression stroke; in this case, the mark on the rotor must match the mark on the housing of the ignition distributor, the mark «FROM» on the flywheel should be visible in the hatch of the clutch housing, and the alignment mark on the rim of the crankshaft pulley should be opposite the pointer on the bottom cover of the timing mechanism.
Remove the top cover of the gas distribution mechanism.
Unscrew the cap plug of the plunger of the chain tensioner, then remove the spring and plunger.
Remove the camshaft sprocket.
Disconnect the muffler downpipe from the exhaust manifold and remove the muffler downpipe bracket bolts.
Turn away bolts of fastening of a head of cylinders and remove it.