Place the vehicle over a viewing ditch or raise it on a lift.
Remove the bottom mudguard of the engine compartment (see fig. 2.4-2.6).
Install a container under the engine to collect engine oil.
Loosen the oil drain plug about half a turn. Place an oil collection container under the plug and unscrew the plug completely. If necessary, press the plug when unscrewing to prevent the oil from leaking prematurely (see fig. 1.2).
If metal filings or shavings are present in the drained engine oil, this indicates a strong wear of the main or connecting rod bearings.
In order for the engine lubrication system to function normally, during the subsequent repair, it is necessary to thoroughly clean the oil channels and pipelines. If present, the oil heat exchanger must also be replaced.
After the oil has drained, wipe everything around the oil drain hole with a rag and screw the oil drain plug with a new O-ring into place.
Oil drain plug tightening torques:
- 4-cylinder engine with stamped steel oil pan - 30 Nm
- 4-cylinder engine with ribbed aluminum oil pan - 50 Nm
- 6-cylinder engine - 40 Nm
- 8-cylinder engine - 50 Nm
Lower the car.
Oil filter replacement
Changing the oil filter is necessary when changing the engine oil.
In a collapsible oil filter, only the filter element needs to be replaced.
Petrol engines and 1.9-I-TDI 110 hp engine
Using the special tool HAZET 2171-1, loosen the oil filter, then unscrew it by hand (see fig. 1.3). Collect leaking oil with a rag.
Clean the oil filter flange in the engine block. Check that the oil filter gasket is not left on the cylinder block.
Lubricate the rubber seal of the new oil filter with clean engine oil and screw in the oil filter by hand until the rubber gasket touches the engine, then tighten the filter by hand ½ turn.
Engines 1.9-I-TDI 115/130 hp and 2.5-I-TDI
Use SW 32 to unscrew cover 1 (pic. 1.5) oil filter housings. Remove the filter element 3 of the oil filter and the sealing ring 2 from the housing (pic. 1.5).
Install a new filter element and O-ring into the oil filter housing.
Screw on the cover and tighten it to 25 Nm.
Install the engine top cover.
Filling engine oil
Attention. On TDI engines, when starting for the first time after changing the engine oil, the engine must run at idling speed until the oil pressure warning lamp goes out. Only after the oil pressure returns to normal can the engine speed be increased. This is necessary to ensure lubrication of the rotating parts of the turbocharger, otherwise, due to lack of lubrication, it may fail.
Remove the cap from the oil filler neck (see fig. 1.6).
Fill the engine with engine oil using the correct grade of oil. It is recommended to immediately add oil j less than required. Warm up the engine at idling speed and, after a few minutes, check the oil level with a dipstick and top up if necessary. If the oil level is above mark a (more than normal) pump it out, as otherwise the crankshaft sealing rings and the catalyst will be damaged.
The oil level is normal if it is in zone b (pic. 1.7). If the oil level is in the area with (pic. 1.7), adding approximately one liter more oil level will rise to the maximum level on the dipstick.
After a test drive, check the engine for oil leaks around the filter and drain plug on the sump. Tighten them if necessary.
Stop the engine and wait three minutes for the oil to drain into the sump. Check the oil level and top up if necessary.
Install the lower engine compartment mudguard.
Checking the engine and engine compartment for fluid leaks
Remove the top engine cover. Remove the lower mudguard of the engine compartment.
Check pipes and hoses and their connections:
- fuel system;
- engine cooling and car interior heating systems:
- brake system;
- power steering. Visually determine leaks, porosity, gaps and cracks and repair if necessary.
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