Overview

On the family car Golf III / Vento installed a wide range of gasoline engines in volume from 1.4 to 2.9 liters. All of them (except engines VR6) have four cylinders and located on top of the camshaft (s). Initially the machines were equipped with engines vosmiklapannymi one camshaft 1.4 liter (1391 cm3), 1.6 liters (1,598 cm3), 1.8 liters (1781 cm3) and 2.0 liter (1984 cm3). In 1993 there was a modification to the shestnadtsatiklapannoy two-shaft cylinder head. These motors are liquid-cooled, four-row arrangement of cylinders (engines VR6 - six cylinders), cast iron block and cylinder head made of aluminum alloy. In the engine compartment, the engine is transversely.

One or two verhneraspolozhennyh camshafts driven by a toothed belt. Large motors equipped intermediate shaft, which is driven via a belt drive camshaft and is used to drive the ignition distributor and the oil pump. Inlet and outlet valves are closed single or double coil springs and move in the guide bushings pressed into the cylinder head. The camshaft drives the valves through hydraulic jacks mounted in the cylinder head.

Lubrication and cooling of the engine is partly implemented by means of oil which is an oil-pump, driven from either the crankshaft or from the intermediate shaft (depending on the type of engine), the oil circulates in a loop system. The oil from the oil pan is sucked through the strainer in the externally mounted filter cartridge. Next it goes to the block, which lubricates the main bearings, the heads of rods, piston pins and mirrors the engine, and then flows into the cylinder head, which lubricates the bearing neck of a camshaft and hydraulic valve lifters.

More powerful engines are equipped modifications installed at the base of each cylinder oil jets - they spray oil on the bottom surface of the piston, improving cooling.

If, after the dismantling of the engine cylinder block detected any metal chips that may be, for example, due to jamming in the root or connecting rod bearings, then regardless of thorough cleaning of lubricating ducts must be replaced all nozzles for injecting oil and a non-return valve.

The oil cooler provided in a number of engine models, cools the oil before it enters the engine.

All engines except engine models AAA and ABV, crankshaft mounted in five main bearings, and its end play is limited to thrust bearing located between the second and third cylinders.

The coolant is pumped, driven by a belt drive camshaft drive belt or accessory.

All the petrol engines of cars of family GOLF III equipped with an integrated management system engine (KSUD) subsystem includes fuel injection and ignition control subsystem type Digifant, Bosch Mono-Motronic, Simos.

We strongly recommend that you repair procedures produce wash the engine compartment fully: in this case the dismantled parts and their attachment points will be more visible, the tool will be easier to keep clean and less soiled inner surfaces of the engine.

For work to select the most comfortable, clean and well-lighted place (but as a necessary minimum possible open area with a firm and smooth surface). Access to the car is better to have all sides, being available to some nearby shelves and workbench.

Protect from dirt and mette mounting wiring harness.

When repairing the engine group the removed parts according to their position in the block / cylinder head, respectively, if you want to install them again, do not combine them at random, in which case they can quickly come into disrepair. Mark the items according to their locations before removal, such as "the valve number 1 issue", "piston number 1", etc. Keep in mind, the Golf is considered the first cylinder closest to the timing belt. For storing removed parts kits use only clean and durable container (thick plastic bags, etc.).

For security purposes, you will need the help of one - two people, especially in operations involving the movement and assembly / dismantling heavy components that can not be done alone. Do not expose yourself to unnecessary risk! In that case, if you make major repairs to the removal of the engine for the first time, publishing urges to take the help of a more experienced mechanic! These measures will help save you time, prevent injuries and to avoid unnecessary costs.