Diesel engines — general information The engine with intermediate fuel injection into the combustion chamber, four-stroke, four-cylinder, in-line, water-cooled, has a camshaft in the cylinder block, mounted...
Specifications of diesel engines Engine code (located on the cylinder block next to the dipstick) STR, N-STR, SFA, SF, 4AB, 4BA, 4CA Number of cylinders 4 in a row The order of operation of the...
Repair without removing the engine On the engine installed in the car, you can perform the following work: removal and installation of the cylinder head; removal and installation of parts of the gas...
Checking and adjusting valve clearances Valve arrangement The valve clearance should be checked and, if necessary, adjusted on a cold engine after it has been in the off state for about four hours. It is...
Fuel System — Design Description Power system diagram The system is designed to clean and supply atomized fuel to the engine cylinders in the amount necessary for the corresponding mode of operation....
Glow plugs — check Glow plug with burnt tip To check the glow plugs, disconnect the power rail from the glow plugs. Connect test lamp (any 12V light bulb) one terminal to the positive pole...
Cylinder compression check The compression value shows, in most cases, how worn out the cylinder-piston group of the engine. To measure compression, a compression gauge for diesel engines with a...
Bleeding air from the fuel system This procedure must be carried out in the following cases: disconnection of the fuel pipeline; airing the fuel circuit of the fuel pump; turning off the engine in the...
Removal and installation of the fuel pump Fuel injection system 1 - high pressure fuel pump; 2 – the electromagnetic valve of a stop of the engine; 3 – holder of controls; 4 - plug; 5 – a bolt of coupling of the...
Checking and adjusting idle speed Attention! A special tachometer is required to check the RPM of a diesel engine. Attention! Idling speed with high pressure fuel pump: DPC - 775±50 rpm; DPRC - 875±25...
Idle speed cable — removal and installation To ensure stable operation of the engine when starting a cold engine and during warm-up, a special idle speed increase device is used that controls the high-pressure...
Removing the cylinder head Cylinder head assembly 1 - cylinder head, 2 - head gasket, 3 - swirl chamber, 4 - fixing ball, 5 - exhaust valve seat, 6 - intake valve seat, 7 - valve guides, 8 -...
Installing the cylinder head Cylinder head gasket thickness designation Cylinder head bolt tightening sequence 1. Thoroughly clean the gasket contact surfaces in the cylinder block and head, as well...
Check and repair of a head of the block of cylinders These procedures are performed after removing the cylinder head. Size (A) valve guide depth 1. Remove the water pump, exhaust manifold, swirl chambers, and engine...
Removal and installation of the engine Removal of the engine without gearbox is made upwards from the engine compartment using a lifting mechanism. It is also possible to remove the engine together with the...
Engine disassembly Oil pump mounting elements 1. Mount the engine on a suitable frame, drain the oil and remove the oil filter. 2. Remove the vacuum pump and drive V-belt; unscrew the...
Engine assembly — general information Before assembling the engine, check all parts and install only clean and in good technical condition. Observe: the required connections of interacting parts, the correct...
Installing the rear main bearing Numbering of main bearing caps 1. Install the gasket into the groove in the cylinder block and the rear main bearing cap. 2. Install special tool rod (21.085) on the...
Installation of side seals 1. Unscrew the rear main bearing cap (№1) crankshaft. 2. Fit the side seals onto the rear main bearing cap, holding them with special tool 21.085 and attach the cover to...
Assembling the piston-rod assembly Installation of a persistent half ring of a cranked shaft 1. Check the condition of the connecting rod. 2. Observe the correct installation: the recesses on the bottom...
Further steps for assembling the engine 1. Install the crankshaft pulley. 2. Remove any traces of oil or grease from the crankshaft pulley mounting bolt, washer, and from the pulley-washer interface. 3. Apply...
Turbocharger — removal and installation Turbocharger Oil supply line to turbocharger Withdrawal 1. Remove the negative cable from the battery. 2. Remove the crankcase protection and mudguard. 3. Unscrew the...
Oil pressure check 1. Prepare an appropriate pressure gauge. 2. Warm up the engine to normal operating temperature. 3. Disconnect the oil pressure sensor from the oil filter holder and...
Draining fluid from the cooling system 1. Unscrew the fluid filling plug in the expansion tank 2. Set the interior heating temperature control lever to the maximum temperature. 3. Unscrew the coolant drain...
Filling the system and removing air Attention! Air is removed from the cooling system automatically after the engine is started. 1. Screw in the coolant drain plug on the radiator (arrow). 2. Check the...
Cooling system fan The cooling fan drive consists of two important parts - electromagnetic and friction clutches. The electromagnetic clutch is driven by a V-belt and rotates on an axle...
Removing and installing the fan clutch Cooling Fan Clutch 1 - contact brush, 2 - contact ring, 3 - drive belt, 4 - coil, 5 - fan blades, 6 - bolt and nut for fastening fan blades, 7 - central nut, 8 - axle, 9...
Removal and installation of the thermostat Thermostat 1. Drain some of the coolant from the cooling system. 2. Disconnect all pipes from the thermostat housing. 3. Unscrew the bolts securing the thermostat cover,...
Typical engine malfunctions Malfunction Cause Engine does not start: - starter rotates slowly The battery is not fully charged. Oxidation of battery terminals. Poor contact between body, engine and...