Volkswagen Workshop Service and Repair Manuals > Golf Mk4 > Power unit | 4-cyl. injection engine (natural gas) | Engine lubrication | Removing and installing parts of lubrication system

Removing and installing sump

Special tools and workshop equipment required

t	Jointed wrench 10 mm -3185-

t	Allen key, long reach -T10058-

t	Hand drill with plastic brush attachment

t	Silicone sealant -D 176 404 A2-

Removing

–	Remove centre and right insulation trays → General body repairs, exterior; Rep. Gr.50.

–	Drain engine oil.

Note

Observe environmental regulations for disposal.

–	Pull 3-pin connector off oil level and oil temperature sender -G266-.

–	Loosen or tighten sump bolts using 10 mm jointed wrench -3185-. Loosen or tighten flywheel-end bolts only with allen key, long reach -T10058-.

–	Remove sump. If necessary, release sump with light blows of a rubber-headed hammer.

–	Remove sealant residue on cylinder block with a flat scraper.

–	Remove sealant residue on sump with a rotating brush, e.g. a hand drill with a plastic brush attachment (wear protective glasses).

–	Clean sealing surfaces. They must be free of oil and grease.

Installing

Note

t	Observe the use-by date of the sealing compound.

t	The oil sump must be installed within 5 minutes of applying silicone sealing compound.

–	Cut off tube nozzle at forward marking (approx. 3 mm nozzle Ø).

–	Apply silicone sealant -D 176 404 A2-, as shown, to clean sump sealing surface. Sealant bead must be:

t	2...3 mm thick.

t	Run bead along inner side of bolt holes -arrows-.

Note

The sealing compound bead must not be thicker. Otherwise excess sealing compound will enter the sump and can block the oil suction line strainer.

–	Sealant bead must be applied with extreme care in vicinity of arrows. (The figure shows the position of the sealant bead on the cylinder block.)

–	Fit sump immediately and tighten bolts as follows:

1 -	Tighten all bolts between sump and cylinder block only very lightly and in diagonal sequence.

2 -	Tighten bolts between sump and gearbox lightly.

3 -	Further tighten all bolts between sump and cylinder block lightly and in diagonal sequence.

4 -	Tighten bolts between sump and gearbox to 45 Nm.

5 -	Tighten all bolts between sump and cylinder block diagonally to 15 Nm.

Note

t	When installing sump with engine out of the vehicle, ensure that sump is flush with cylinder block at flywheel end.

t	Let sealing compound dry for approx. 30 minutes after installing sump. Only then fill with engine oil.

Further assembly is basically the reverse of the dismantling procedure.

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