AUDI A4 1997 B5 / 1.G AHA ATQ Engines Lubrication System Components User Guide

17-7


18 -
O-ring
Always replace
19 -
O-ring Always replace
20 -
Oil filter
21 -
Hex nut 30 Nm (22 ft lb)Threaded pipe for oil cooler and oil filter
installed in oil pan (upper part) and
tightened to 20 Nm (15 ft lb)
22 -
Oil cooler When installing, make sure O-ring is
seated correctly
23 -
Oil pump Disassembling and assembling Fig. 1Driven by chain from crankshaftTightening torque (chain sprocket to oil
pump): 25 Nm (18 ft lb) Tightening torque (oil pump to engine
block): 25 Nm (18 ft lb)
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17-8


Fig. 1 Removing and installing oil pump
1 - Oil pump
Cannot be disassembled (oil pressure release valve is integrated
with oil pump)
2 - Pressure regulation valve
Tightening torque: 40 Nm (30 ft lb)
3 - Tightening torque: 20 Nm (15 ft lb)
4 - Tightening torque: 25 Nm (18 ft lb)
5 - Chain sprocket
When installing, make sure shaft fits chain sprocket
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17-9

Oil check valve, replacing


Note:
If irregular valve noise occurs repeatedly during
short periods of driving and disappears after
extended periods of driving, the oil check valves
must be replaced.

- Remove intake manifold.

Tightening torque: 10 Nm (7 ft lb)

- Remover cover under intake manifold.

Tightening torque: 10 Nm (7 ft lb)

Note:
The opening also contains distribution line -2- for supplying jets for piston
cooling. - Replace oil check valves -1-.
Tightening torque: 25 Nm (18 ft lb)
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17-10

Oil pan (upper part) and oil pan (lower
part), removing and installing


Special tools and equipment

Drill with plastic brush attachment
Sealant D 454 300 A2
Torque wrench 10 Nm - 45 Nm

- Switch ignition off and disconnect battery
Ground (GND) strap.

CAUTION!

Before disconnecting the battery, determine
the correct coding for the anti-theft radio.

- Withdraw dipstick.

- Unbolt dipstick tube at right-front of cylinder
head, pull up and remove.

- Remove noise insulation panel (arrows).
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17-11

Lock carrier in service position page 13
-1

- Open engine coolant expansion tank cap.

- Place VAG1306 drip tray beneath engine.

- Turn radiator drain plug counterclockwise (arrow). If needed, attach
tube to connection flange.

Collect engine oil in appropriate receptacle.
Vehicles with automatic transmission - Open coolant pump bearing housing drain plug as well (arrow).
- Drain engine coolant.
- Drain engine oil.
- Unbolt oil cooler line bracket from right-side of oil pan.
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17-12


- Set 10-222A engine support bridge together with 10-222A/3 engine
support adapter on fender mounting edges.
- Attach 2024A engine sling to mounting eyes at front and rear of engine.
- Using 10-222A engine support bridge spindle, lift up engine as far as
possible.

- Cut tie wraps (arrows), open bracket for starter wiring and remove
wiring.
- Remove torque support at front of engine.
- Unbolt coolant line at front of engine from oil pan.
- Disconnect harness connector from oil pressure switch on left-side of
oil pan.
- Disconnect coolant lines from oil cooler underneath oil filter.
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17-13


- Remove left and right nuts from lower engine mount -1-.
- Mark installation positions for threaded assembly -1- and guide sleeves
-2- on left and right lower engine mounts.

Note:
Only loosen or lower subframe at front to avoid avoid changing wheel
alignment. - First remove front bolts -2- and -3- from left and right-sides of
subframe. Then remove bolts -1-.
- Swing stabilizer down.
- Remove starter.
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17-14


- Remove oil pan (lower part) and oil pan (upper part).

- Unbolt both oil supply lines. Pull longer of two lines down and off oil
pan (upper part).
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17-15


Note:
Two M6 and two M8 bolts are installed vertically in rear of oil pan (upper
part) in front of connection between engine and transmission. - Unbolt oil pump from engine to allow removal of shorter oil supply line
(do not remove oil pump).
- Remove bolts between oil pan (upper part) and transmission.
- Unbolt oil pan (upper part) from engine.
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17-16

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

- Clean sealing surfaces so they are completely
free of any oil or grease.

WARNING!

Wear protective glasses.

Note:
After applying silicon sealant D 454 300 2, oil pan must be installed within
5 minutes. - Using rotating plastic brush, remove any remaining sealant from oil
pan.

Note:
Sealant must not be thicker than 3 mm, otherwise excess sealant may get
into the oil pan and clog the oil intake strainer. - Cut tube jet at front marking (jet diameter approx. 3 mm).
Thickness of sealant: 2-3 mm (0.04-0.12 in.)
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