Table of contents: About the section ↓ Engine. General description ↓ Repair operations performed without… ↓
About the section
All procedures are described assuming the engine is still in the vehicle. If the engine has been removed for rebuilding, disregard the additional information that precedes each step.
Access to the engine compartment can be improved by removing the hood (see Section 11).
Engine. General description
To indicate the engine type in Section 1, instead of the working volume, codes assigned by the manufacturer are used. A list of codes for all engines is given in Specifications.
The models described are equipped with water-cooled, in-line 5-cylinder engines with a single overhead camshaft, cast-iron cylinder block and aluminum cylinder head. All engines are mounted longitudinally, at the front of the car. The transmission is bolted to the rear of the engine.
The cylinder head carries a camshaft driven by a toothed belt, as well as intake and exhaust valves, each of which is closed by two springs. The valve stems move in guides pressed into the cylinder head. The camshaft actuates the valves by means of hydraulic tappets. Oil is supplied to the tappets through special internal lubrication channels.
The engines use direct injection, i.e. swirl chambers are built into the piston heads.
The crankshaft rotates in six main bearings. Its axial clearance is adjusted by thrust washers installed on main bearing No.4. The toothed belt coming from the crankshaft, in addition to the camshaft, drives the water pump installed on the left side of the cylinder block.
The valves are driven by the camshaft lobes via pushrods. The high-pressure fuel pump is driven by a belt from a sprocket on the rear of the camshaft. The vacuum pump is located on the left side of the cylinder head and is driven via a plunger by an eccentric on the camshaft.
The engine has a full-flow lubrication system. Oil pump with a sickle eccentric. The cartridge-type oil filter is located on the right side of the cylinder block.
Repair operations performed without removing the engine
The following actions can be performed without removing the engine:
- a) Auxiliary drive belts - removal and installation;
- b) Camshaft - removal and installation; *
- c) Camshaft seal - replacement;
- d) Camshaft sprocket - removal and installation;
- e) Water pump - removal and installation (see Section 2);
- f) Crankshaft seals - replacement;
- g) Crankshaft sprocket - removal and installation;
- h) Cylinder head - removal and installation; *
- i) Engine mounts - inspection and replacement;
- j) Oil pump/strainer assembly - removal and installation;
- k) Pallet - removal and installation;
- l) Toothed drive belt, its sprockets and cover - removal, inspection and installation.
* Procedures for overhauling the cylinder head, as well as removing the tappets and camshaft, are given in Section 1B.
Note: Theoretically, pistons and connecting rods can be removed directly in the engine compartment (after removing the cylinder head and sump). However, it is not recommended to do this, since such procedures are much easier to perform on a removed engine (see Section 1B).
The article is a reprint of material from: audimanual.ru