Engine overhaul. General information This section includes descriptions of basic repair procedures for the cylinder head, engine block and its internal components. Information is provided in a...
Engine overhaul. general information A high mileage is not always an indication that a bulkhead is necessary, nor is a low mileage always an indication that a bulkhead can be avoided. The...
Cylinder compression check Checking the compression in the cylinders will show what condition the top of the engine is in (those. pistons, rings, valves, head gasket). Specifically, this...
Removing the engine — general information Before removing the engine, it is necessary to clean the engine compartment from dirt and traces of oil. A winch or hoist is required. Prepare all the...
Engine Removal — Methods and Precautions If you decide that the engine needs to be removed for overhaul or repair, some preparatory work must be done. It is extremely important to provide a suitable...
Engine — removal and installation Caution: Gasoline is extremely flammable, so special care must be taken when working on any part of the fuel system. Do not smoke or allow open flames in the...
Engine repair options The master, with the intention of repairing the engine, will be faced with the need to make a certain choice. The decision to replace the cylinder block,...
General preparation for engine repair So, the engine, separated from the transmission, is on the floor of the workshop. Oil is drained and all coolant removed. This is sometimes not the case as...
Engine overhaul — disassembly and assembly sequence Attention: This chapter provides a general procedure for disassembling and assembling engines. For detailed information on checking individual engine...
Camshaft (s) — removal and installation M30 series engine camshaft - removal and installation Mounting elements of the camshaft of the M30 series engine 1 - chain; 2 - asterisk; 3 - lock washer; 4 -...
Cylinder head — disassembly Elements of the gas distribution mechanism of the M30 series engine 1 - axis of rocker arms; 2 - cork; 3 - axis; 4 - lining; 5 - spring cup; 6 - external...
Cylinder head — cleaning and checking If the engine has been overheated, the cylinder head may have become deformed. Clean all traces of sealant and old gaskets from the surface of the cylinder...
Cylinder head Carefully inspect the cylinder head for cracks, coolant leaks, or other damage. If there are cracks that cannot be repaired in a specialist workshop, the head...
Lapping of valves Clean all valves from carbon deposits. Make sure the valve and seat surfaces are clean, evenly apply grinding paste to the valve surface. Using a suction cup,...
Valve Seats — Machining Valve seats with signs of wear or soot can be machined on all engines if the corrective angle and width of the contact surface are maintained. Otherwise, the...
Valve guides — check and replace When repairing a cylinder head with leaking valves, it is not enough to remake or replace the valves and valve seats. It is very important to check the valve...
Cylinder Head — Assembly Valve element installation sequence 1 - valve; 2 — an epiploon of a core of the valve; 3 - lower spring plate; 4 - valve spring; 5 - upper spring plate; 6 -...
Pistons and connecting rods — removal Typical elements of a crank mechanism 1 - crankshaft; 2 - liners of main bearings; 3 - thrust liners; 4 - connecting rod; 5 - connecting rod bearing shell; 6 -...
Crankshaft — removal Attention: Before removing the crankshaft, the following must be removed: flywheel, oil sump, oil pump, pistons with connecting rods and rear oil seal housing....
Cylinder block — cleaning Most of the plugs in the engine have become severely corroded over the life of the engine. Place a small chisel on one end of the plug and hammer it inward...
Cylinder block — check Before testing, the block must be cleaned. Inspect the block for cracks and corrosion, damage to the threads in the holes. In a special workshop, you can check...
Cylinder honing Before assembling the engine, the cylinder walls should be honed so that the new piston rings rub against the walls. Honing can be carried out independently,...
Pistons and connecting rods — check Before checking, the pistons and connecting rods must be cleaned and the old rings removed from the pistons. Caution: Install new piston rings each time the...
Crankshaft — check Clean the crankshaft with solvent and dry it. Clean the oil holes with a stiff brush and flush with solvent. Check the main and connecting rod journals for...
Main and connecting rod bearings — check Although connecting rod and main bearings are replaced with new ones during rebuilds, old bearings should be left for detailed examination, as they can provide...
Flywheel inspection and repair If the end surface of the flywheel shows scratches or pits due to clutch slippage, the surface may need to be re-turned. Overheating can lead to the formation...
General instructions for assembling the engine If the work has been carried out carefully and all elements have been repaired or replaced, the engine is ready for assembly. This is the most enjoyable part...
Piston rings — installation Before installing the piston rings, check the gaps between the ends of the rings. (It is assumed that the piston ring backlash has already been checked and is...
Engine Troubleshooting If the engine does not start, the malfunction must be searched systematically. In order for the engine to start at all, a gasoline engine requires two basic...