The performance of most of the work described in this Part is based on the condition that the engine is installed in the vehicle. Therefore, if this information is used in a complete overhaul of the engine, when it has already been removed, many of these works will not be performed.
Engine
Engine - 4-cylinder, in-line, with an overhead camshaft, mounted transversely in front of the car.
The crankshaft is supported in the cylinder block by five main bearings. Thrust washers are installed in the main bearing No. 2, which regulate the axial clearance of the crankshaft.
The connecting rods are fixed on the crankshaft by means of connecting rod bearings with liners, and on the pistons - by piston pins, which are fixedly planted in the connecting rods. The pistons are made of aluminum alloy - and are equipped with three rings, two compression and one oil scraper.
The camshaft rotates in five bearings drilled directly into the cylinder head and is driven from the crankshaft by a toothed belt.
The camshaft controls the operation of the valves through the tappets. Valve clearance adjustment is carried out by washers that are installed on the pushers. The intake and exhaust valves are closed by the same spring.
On older engines, the countershaft, mounted near the crankshaft, is also driven by the toothed belt and drives the oil pump. On late model engines (talk to Specifications) the oil pump is driven by a chain from the crankshaft: there is no intermediate shaft on these engines, only the gear wheel is left.
The high pressure fuel pump is driven by a toothed drive belt and is described in Chapter Power and exhaust systems.
The engines use a semi-closed crankcase ventilation system; crankcase gases are removed from the oil separator on the cylinder block and pass through the second oil separator) to the intake duct (contact the head Power and exhaust systems).
Lubrication is supplied to the engine under pressure from an oil pump mounted below the crankshaft. Engine oil is supplied through an externally installed oil filter to the main lubrication channel serving the crankshaft, intermediate shaft (where available) and distributor. Oil nozzles are installed in the cylinder block, which spray oil from the back of the pistons. Some models are equipped with an engine oil cooler mounted on the cylinder block.
Repair procedures performed without removing the engine from the vehicle:
- a) Removal and installation of a head of the block of cylinders.
- b) Removal and installation of a toothed drive belt and gear wheels.
- With) Camshaft seal replacement.
- d) Removal and installation of the camshaft.
- e) Removal and installation of the pallet.
- f) Removal and installation of connecting rods and pistons.*
- g) Removal and installation of the oil pump.
- h) Replacing crankshaft seals.
- f) Replacing engine mounts.
Note. Although the procedures marked with an asterisk can be performed on the engine in the vehicle (after removing the tray), it will be more convenient to do it on the removed engine.