light AUDI A6 1998 C5 / 2.G AEB ATW Engines Lubrication System Components Workshop Manual

17-17

All models

Note: - Loosen rear bolt -2- for right transmission mount several turns.
Remove front bolt -1- for right transmission mount.
- Remove oil return line for turbocharger at oil pan.
- Unbolt oil pan.

For vehicles with manual transmission: both rear bolts on oil pan can
be reached through opening on flywheel (arrow). Turn flywheel as
needed. Use 3249 hex ball socket to remove rear oil pan bolts.
- Remove oil pan (if necessary tap lightly using rubber hammer to
remove).
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17-18

Installing
Installation is the reverse of removal, noting the
following:

Note:

Replace gaskets and O-rings.
When installing oil pan on removed engine,
note that oil pan is aligned with metal plate on
flywheel side (i.e. oil pan projects out over
engine block 0.8 mm, or 0.0315 in.).

- Clean sealing surfaces before installing oil
pan.

- Lightly spread AMV 174 004 01 sealant on front
and rear contact surfaces of oil seal carrier.

- Tighten bolts between oil pan and engine block
in 2 stages and diagonal sequence.

- Install oil pan and tighten all bolts between oil
pan and engine block to 5 Nm (44 in. lb) (stage
1).

- Tighten bolts between oil pan and
transmission.
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Special tools and equipment

VAG1342 oil pressure tester
VAG1527B voltage tester
VAG1594A measuring appliance adapter

Test conditions
Oil level OK
Oil pressure warning light -K3- must light up
when ignition is switched on.
For vehicles with Auto Check system, "i.O"
indicator must be lit (call up symbol)
Engine oil temperature approximately 80 C
(176 F)
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17-24

Oil pressure switch, checking

- Disconnect line from oil pressure switch.

Note:
While starting engine, watch pressure tester and LED as oil pressure
switch may open during start. - Remove oil pressure switch and install VAG1342 oil pressure tester.
- Install oil pressure switch into VAG1342 oil pressure tester.
- Connect brown wire -1- of tester to Ground (GND).
- Using VAG1594 adapter, connect VAG1527B voltage tester to oil
pressure switch and Battery Positive Voltage (B+).
LED must not be lit.
- If LED is lit, replace oil pressure switch.
- Start engine.
At 1.2-1.6 bar (17.4-23.2 psi) LED must be lit.
- If LED does not light, replace oil pressure switch.
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