since 1994 release
Repair and operation of the car
+ Cars of the Skoda Felicia brand
+ Maintenance instruction
+ Routine maintenance
- Repair of the engine
- Repair without extraction from the car of the petrol engine of 1.3 l
Description of the main knots and mechanisms
Check of a condition of conrod and piston group on hearing and measurement of compression pressure in cylinders
Reduction of the piston of the first cylinder in the provision of the top dead point (TDP)
Removal and installation of a cover of a casing of the camshaft
Removal, check of a state and installation of assembly of an axis of yokes
Removal and installation of a head of cylinders assembled with the inlet pipeline and a final collector
Removal, check of a state and installation of a forward cover, chain and asterisks of the GRM drive
Removal, check of a state and installation of components of the oil pump
Removal and installation of the pallet of a case of the engine
Replacement of epiploons of a bent shaft
Removal, check of a state and installation of a flywheel
Check of a state and replacement of rubber pillows of support of a suspension bracket of the power unit
Removal, installation and adjustment of effort of a tension of a belt of the drive of auxiliary units
+ Repair without extraction from the car of the petrol engine of 1.6 l
+ Repair without extraction from the car of the diesel engine
+ Dismantle of the power unit and capital repairs of the engine
+ Cooling systems, heating
+ Power supply system
+ Engine electric equipment
+ Power shafts
+ Brake system
+ Suspension bracket and steering
+ Body and finishing of salon
+ Onboard electric equipment
Removal, check of a state and installation of components of the oil pumpScheme of the lubrication system of the engine
Reducing valve (side section)
Full-line oil filter
The lubrication system - general information
Problem of the lubrication system is decrease in a component of friction between internal components of the engine, their protection from corrosion, and also branch from details of excess of heat. The scheme of the lubrication system is submitted on an accompanying illustration.
Circulation of oil in the engine happens as follows. The oil pump sucks in oil through a maslozabornik from the pallet of a crater and gives it via the special channel to a full-line oil filter. After filtering oil moves to the trunk oil main and arrives to a bent shaft and openings in the block in which camshaft necks rotate. On the channels provided in a body of a bent shaft, oil arrives to inserts of conrod bearings.
From the trunk oil main oil is brought also to the oil pressure sensor switch. Through openings in yokes oil is sprayed on cores of valves.
Through openings in the top part of the lower head of rods oil vypryskivatsya on the surface of cylinders. Supply of oil to a chain of the GRM drive is carried out through openings in a forward part of the block of cylinders.
The Maslozalivny mouth, covers of a head of cylinders is closed by the plastic stopper equipped with a rubber sealing ring.
The hose of system of ventilation of a case is connected to the union on a sidewall of a mouth.
The pallet of a case is stamped from a steel sheet. Between the pallet and the block of cylinders sealing laying is established.
Fastening of the pallet to the block is carried out by means of nineteen bolts of M6x20 which it is necessary to tighten with effort 7 ÷ 9 Nanometers in strictly certain order.
The drain stopper with a carving of M16x1.5 is provided in the lower point of the pallet. the stopper is equipped with an aluminum sealing washer of 16х22 in size.
The oil pump settles down in the lower part of a cover of a gas-distributing chain. The drive of the pump is carried out by the gear wheel fixed on an ignition distributor shaft. The pump sucks in oil through the maslozabornik equipped with the mesh filter from the crater pallet.
On an illustration components of the oil pump assembled are presented. The conducted gear wheel is put on the axis pressed in a cover of a gas-distributing chain. Through an opening in a cover the pump shaft is passed, from below on which the leading gear wheel is established. The groove intended for introduction of a shaft to gearing with an ignition distributor drive shaft is provided in the top part of a shaft.
The conducted and conducting gear wheels are entered into gearing with each other so that at rotation to carry out suction of oil and its forcing to the highway of the engine. Height of gear wheels of the oil pump makes 20 mm.
From below assembly of the pump is closed by the cover fixed by four bolts of M6x20 passed also through sealing laying.
Laying, except sealing of a joint, carries out also a role of the limiter of an axial side play of gear wheels. If when carrying out repair lack of factory laying is found, it can be made of standard sheet with a maximum thickness of 0.1 mm.
If gap size between a cover and end faces of gear wheels of a shaft lies within 0.045 ÷ 0.158 mm, laying can be not established at all.
Excessive growth of pressure in the engine is resisted by the reducing valve installed in a cover of the oil pump. The basic working element of the valve is the ball with a diameter of 12 mm. The ball nestles on the saddle a spring. The second end of a spring rests against the forelock. At excess by pressure of oil of value of 4 kgfs/cm 2, the spring contracts and the ball slightly departs from a saddle. Excess of oil at the same time merges back in the case pallet.
From the pump oil under a pressure comes to a full-line oil filter. Oil comes to the filter case through inlet openings, previously having wrung out the drainage valve. Having passed through the paper filtering element, oil through an inlet opening of the filter comes to galleries of the engine.
The drainage valve is manufactured of rubber or plastic and in addition interferes with return of oil to the pump. Thanks to such design of the filter, pressure in system rises right after start of the engine. At installation of the new filter on its filling with oil some time defining a delay of switching off of the corresponding control lamp on an instrument guard of the car is required.
The safety valve provides passing of oil bypassing the filtering element in case of violation of passability of the last, preventing thereby excessive increase in pressure. The valve works also at excessive increase in pressure when using the oils with the raised degree of viscosity used in winter season. In process of warming up of the engine and to decrease in viscosity of oil, the valve gradually comes back to a closed position. In general the filter is designed and manufactured so that to maintain pressure to 15 kgfs/cm 2.
In the case of the filter there is a filtering element made from in a special way the processed paper. Paper is put by an accordion and laid in the form of a star thanks to what in the case of rather small size it is possible to place the big filtering surface.
The place of a joint of the case of the filter with a landing surface on the block of cylinders is pressurized by means of the rubber or plastic sealing laying put in a special flute in the filter basis.
The oil pressure sensor switch by inclusion of a control lamp informs the driver on pressure drop of oil with the lubrication system below an admissible limit (0.3 ÷ 0.6 kgfs/cm 2).
REMOVALComponents of assembly of the oil pump
Check of a state