warning AUDI A4 1995 B5 / 1.G APB Engine Lubrication System Components Workshop Manual

17-16

WARNING!

Fuel system is under pressure. Before
opening the system, place a cloth around the
connection. Then release pressure by
carefully loosening the connection.

- Disconnect fuel supply line and fuel return line -1- and -2-, and move
fuel lines clear.
- Pull hose off EVAP valve -3-.

- install clamp (special tool 3094) on hose from power steering reservoir
to power steering pump.
- Disconnect power steering hose -arrow-.
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17-27

WARNING!

Do not open air conditioner refrigerant
circuit.

Notes:
Note:
Use a separate container to collect the engine oil. - Detach air conditioner compressor -1...2-.
Watch position of guide bushes when installing.When installing, insert bolt -1- in the compressor first. To prevent damage to the condenser and refrigerant lines/hoses,
ensure that the lines and hoses are not stretched, kinked or bent.
- Drain engine oil.

- Remove lower section of oil pan.
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17-33

- Unbolt dipstick guide tube at front of cylinder
head (right side), and pull out of oil pan from the
top.

Repair Manual, Body Exterior, Repair Group 63

Repair Manual, Body Exterior, Repair Group 50
WARNING!
Hot steam can escape from the expansion tank when the filler cap is
opened. Cover the filler cap with a cloth and remove it carefully. - Remove noise insulation panel -arrows-.
- Remove bumper.
- Move lock carrier to service position.- Remove cap on coolant expansion tank.
- Place drip tray VAG 1306 below engine.

- Turn drain screw -arrow- on radiator anti-clockwise, if necessary install
drain hose to connection.
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17-42

Installing:
Install in the opposite order to removing. When
installing, note the following points:

- Clean sealing surfaces; ensure that they are free
of oil and grease.

WARNING!

Wear protective goggles.

Note:
The oil pan must be installed within 5 minutes after applying silicone
sealant D 454 300 A2. - Remove any residues of sealant on oil pan and engine block using
plastic brush attachment, or similar.

- Cut off nozzle of tube at front marking (diameter of nozzle approx. 3
mm).

Thickness of sealant bead: 2 ... 3 mm
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17-49

WARNING!

Do not open air conditioner refrigerant
circuit.

Notes:
Note:
Use a separate container to collect the engine oil. - Detach air conditioner compressor -1...3-.
Watch position of guide bushes when installing.When installing, insert bolt -1- in the compressor first. To prevent damage to the condenser and refrigerant lines/hoses,
ensure that the lines and hoses are not stretched, kinked or bent.
- Drain engine oil.
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17-65

Oil pressure and oil pressure switch,
checking


Note:
Servicing and checking function of oil pressure
warning lamp and buzzer:

Electrical Wiring Diagrams, Troubleshooting &
Component Locations

Test procedure

- Remove oil pressure switch (F1) and screw oil pressure switch into
tester.
- Screw tester into oil pan in place of oil pressure switch.
- Connect brown wire of tester to ground (GND) (-).
- Using test leads from VAG 1594, connect diode test lamp VAG 1527
between positive battery terminal (+) and oil pressure switch.
- Start engine and gradually increase engine speed.
LED should light up at 1.2...1.6 bar, otherwise replace oil pressure
switch.
- Increase engine speed further.

At 2000 RPM and an oil temperature of 80 C oil pressure should be at
least 2.0 bar.
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