Features of the engine device The car is equipped with a 4-stroke carbureted 4-cylinder engine (pic. 2) with in-line vertical arrangement of cylinders and with a camshaft located on the cylinder head. The...
Engine mount — design description The engine assembly with clutch, gearbox and final drive forms a power unit, which is mounted on the car on three elastic supports 2, 3 and 5 (pic. 3). The front 5 and left 3...
Crank mechanism — design description It consists of a cylinder block, a piston with a connecting rod and a crankshaft with a flywheel. Cylinder block Cast iron, cast. Block cylinders are divided into 5 classes...
Gas distribution mechanism — design description The timing mechanism consists of a camshaft 5 (pic. 5), valves 2 and guide bushings, springs with fasteners and tappets 3 valves. The details of the mechanism are located on the...
Possible engine malfunctions Possible engine malfunctions, their causes and remedies * Before troubleshooting, make sure that the coolant temperature gauge and its sensor are working (see sect. « control...
Removal and installation of the power unit The power unit, which consists of the engine, clutch, gearbox and final drive, is removed from the engine compartment down. In this case, the tips of the front wheel drive shafts...
Cylinder head — removal and installation On a car, the head is removed if the problem does not require removal of the power unit or if it is necessary to remove carbon deposits from the surface of the combustion chamber...
Camshaft — removal and installation Remove the camshaft in the following order. Remove the air filter as described earlier in the section « cylinder head », and close the carburetor with a technological plug from...
Camshaft drive belt — removal and installation Before proceeding with the replacement of the belt, brake the car with the parking brake and turn on the IV gear. Remove the toothed belt cover. Loosen the alternator drive belt...
Camshaft oil seal — removal and installation Before proceeding with the replacement of the oil seal, brake the car with the parking brake and set the gear lever to the neutral position. Remove the front toothed belt cover....
Front crankshaft oil seal — removal and installation Before proceeding with the replacement of the oil seal, install the car on a lift, brake with a parking brake, put stops under the rear wheels and hang out the front ones....
Rear crankshaft oil seal — removal and installation Before proceeding with the replacement of the oil seal, install the car on a lift and remove the gearbox (see sect. « Transmission »). Unscrew the bolts securing the clutch cover...
Connecting rod and piston group — removal and installation To remove parts of this group, install the car on a lift and disconnect the wire from the terminal «minus» battery. Raise the car, remove the engine mudguard and drain the coolant...
Dismantling and assembly of the power unit Disassembly Remove the muffler exhaust pipe with bracket. Loosen starter nuts 3 ( rice. 21 ) to the clutch housing and remove the starter. Remove brackets 1, 4 and 6 ( see fig. 3...
Engine disassembly and assembly Disassembly The washed and cleaned engine is installed on a stand for disassembly and oil is drained from the crankcase. Remove hose 1 (pic. 22) and hose 2 of the crankcase...
Connecting rod and piston group — disassembly and assembly Disassembly Remove piston rings. The piston is placed in a support with a cylindrical recess and, using the mandrel A.60308 *, centered in the hole of the piston pin, the pin is...
Cylinder head — disassembly and assembly Disassembly If only one part needs to be replaced, the cylinder head may not be completely disassembled and only what is needed for replacement can be removed. The cylinder head...
Cylinder block — check and repair Examination Thoroughly wash the cylinder block and clean the oil channels. After blowing and drying with compressed air, inspect the cylinder block. Cracks in any places of the...
Connecting rod and piston group — check and repair The piston is cleaned of carbon deposits and all deposits are removed from the lubrication channels of the piston and connecting rod. Carefully examine the details. Cracks of any...
Crankshaft and flywheel — check and repair Crankshaft Inspect the crankshaft. Cracks anywhere on the crankshaft are not allowed. Scratches, nicks and risks are not allowed on surfaces mating with the working edges of the...
Cylinder head and its parts — inspection and repair Cylinder head Thoroughly wash the cylinder head and clean the oil channels. Remove carbon deposits from the combustion chambers and from the surface of the exhaust channels with a...
Camshaft and its drive — check and repair Camshaft On the bearing journals of the camshaft, scoring, nicks, scratches and aluminum enveloping from the bearings are not allowed. On the working surfaces of the cams and the...
Valve clearance adjustment Gap A ( see fig. 5 ) between the camshaft lobes and shims on a cold engine must be (0,20±0,05) mm for intake valves and (0,35±0,05) mm for graduation. The gap is adjusted by...
Camshaft drive belt tension adjustment To tension the belt, remove the front protective cover of the toothed belt and turn the crankshaft by the bolt securing the alternator drive pulley clockwise by two turns. Turn...
Alternator Drive Belt Tension Adjustment Normal deflection A (pic. 51) belt should be within 8-10 mm with a force of 10 kgf. To adjust the tension of the belt 4, loosen the nut 1 securing the generator 3 to the tension...
Setting the ignition timing Ignition advance angle up to v.m.t. at a crankshaft speed of 750-800 rpm should be (1±1) °. To check the ignition timing on the car, there is a scale 1 (pic. 52) in the hatch of...
Engine break-in after repair The overhauled engine is bench tested (running-in) without load according to the following cycle: at a speed of 750-800 rpm - 2 min; 1000 - 3; 1500 - 4; 2000 rpm - 5 min. Having...