Withdrawal
Disconnect the wire from the negative battery terminal.
Remove the plug from the expansion tank. Disconnect the supply hose from the radiator and drain the coolant.
Remove coolant hoses if necessary.
Remove air filter.
Disconnect the fuel supply hose from the fuel pump, and the fuel drain hose from the carburetor, and close the openings of the hoses and fittings with plugs.
Disconnect the vacuum hoses from the carburetor.
Disconnect the connectors of the electrical components installed on the cylinder head, disconnect the block from the intake manifold heater.
Disconnect the crankcase ventilation hose from the cylinder head cover.
Disconnect the wires from the spark plugs, remove the cover and the ignition distributor rotor.
Remove spark plugs.
On an engine with a Solex 35 PDSIT carburetor, disconnect the throttle cable from the carburetor. On an engine with a Solex 1B1 carburetor, disconnect the throttle and air damper cables from the carburetor.
Disconnect the front muffler pipe from the exhaust manifold.
Turn the engine crankshaft to the position corresponding to the TDC of the end of the compression stroke of the piston of the 1st cylinder, aligning the mark on the crankshaft pulley with the edge of the protrusion «ABOUT» indicator on the cylinder block.
Remove the front toothed belt guard.
Loosen the toothed belt tension and remove it from the camshaft pulley.
Remove the camshaft sprocket.
Remove rear toothed belt guard.
Remove cylinder head cover.
Loosen the cylinder head bolts.
Remove cylinder head.
Installation
Installation of the cylinder head is carried out in the reverse order of collapse, taking into account the following:
- clean all removed parts and check their technical condition. Wash mating surfaces with a suitable solvent. Never clean the mating surfaces with a scraper or abrasive materials. Replace gaskets during assembly;
- install the cylinder head gasket so that the marked side of the gasket faces the cylinder head;
- reinstall the cylinder head and tighten bolts 8 and 10 (see photo) for its centering;
- tighten new cylinder head bolts, putting new washers;
- Tighten the cylinder head bolts in two steps, following the order (see photo) and tightening torques: 1st reception: 7.5 kgf·m; turn 2nd step by 90°;
- install the camshaft drive belt and adjust its tension (see above);
- check the clearances in the valve drive mechanism and, if necessary, adjust them;
- fill the engine cooling system with liquid,
- check the oil level in the crankcase;
- if the cylinder head was disassembled, adjust the ignition timing, engine idle, check the clearance adjustment with the valve drive mechanism on a hot engine.
Cylinder Head Details: 1 — laying a head of cylinders; 2 - valve guide sleeve; 3 - stuffing box; 4 - cylinder head; 5 — laying of a cover of a head of cylinders; 6 - cylinder head cover; 7 - oil filler plug.
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