2000 AUDI A3 pump

19-3


8 -
Radiator
Removing and installing Page 19
-24
After replacing, replace coolant
9 -
Upper coolant line
10 -
Coolant pump/coolant thermostat Coolant pump, removing and installing
Page 19
-13

Check for ease of movementCoolant thermostat, removing and installing
Page 19
-20

Checking Page 19
-21
11 -
Turbocharger
12 -
Cylinder head/cylinder block
After replacing, replace coolant
13 -
Connector
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19-6


Filling
Note:
CAUTION! - Remove drain plug from coolant pump (arrow).
The cooling system is filled year-round with frost and corrosion
protection additives. Until 6/96, G 011 A8 C coolant (green color) was used.From 7/96 on, only G 012 A8 D coolant (red color) is used.Coolants G 011 A8 C and G 012 A8 D CANNOT be mixed. Mixing
them will cause severe engine damage. Part numbers are for reference only. Always check with your Parts
department for the latest information. If the fluid in the expansion tank is brown, G012 A8 D has been mixed
with other coolant. In this case, flush cooling system and change
coolant. To flush, fill cooling system with clear water and run engine
for approx. 2 minutes. Flushing the system should remove most of the
coolant residue.
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19-8


For coolant G 012 A8 D, use T40007 refractometer to test frost protection
in cooling system.
Recommended mixture ratios:
Vehicles with small cap Frost protection to
Anti-freeze amount
G 012 A8
D
1) Water
1)
-25 C
(-13 F)
-35 C
(-13 F)
40 %

50 % 3.0 ltr.
(3.2 qts.)
3.5 ltr.
(3.7 qts.) 4.0 ltr.
(4.2 qts.)
3.5 ltr.
(3.7 qts.)
1) The quantity of coolant: 7.0 liters (7.4 qts.) can vary depending upon
vehicle options.
- Install lower radiator hose and secure.
- Replace O-ring and install coolant pump drain plug.
Tightening torque: 30 Nm (22 ft lb)

- Screw VAG1274/1 adapter onto coolant expansion tank.
- Attach VAG1274/10 special tool to VAG1274/1 adapter.
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19-11


Coolant pump and coolant thermostat,
servicing

1 -
Bolt
M6: 10 Nm (7 ft lb)M8: 20 Nm (15 ft lb)
2 -
Lower toothed belt cover Removing and installing Page 13
-29
3 -
Nut
10 Nm (7 ft lb)
4 -
Coolant pump Removing and installing Page 19
-13
Check for ease of movement
5 -
Gasket Always replace
6 -
O-ring Always replace
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11/18/2002 htt
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19-12


7 -
T-head bolt
Insert before installation
8 -
Coolant thermostat Removing and installing Page 19
-20
Checking Page 19
-20
9 -
Connector
10 -
Drain plug
30 Nm (22 ft lb)
11 -
O-ring Always replace
12 -
Belt pulley Installed position: flat pulley half faces
coolant pump
13 -
Socket-head bolt 25 Nm (18 ft lb)
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19-13

Coolant pump, removing and installing


Note:
Coolant pump is bolted to bracket for generator,
power steering pump and viscous fan.

Lock carrier in service position Page 13
-1

Removing

CAUTION!

Before disconnecting the battery:

Stop the engine.
Determine the correct coding for the anti-
theft radio.
Switch the ignition off (also applies when
connecting the battery). Failure to do so may
damage the Engine Control Module (ECM).

- Switch ignition off and disconnect battery Ground (GND) strap.
- Remove ribbed belt Page 13
-15
.
- Remove viscous fan (with belt pulley) Page 13
-14
, Fig. 1
.
- Remove V-belt Page 13
-18
.
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19-14

- Drain coolant Page 19
-4 .

- Loosen clamps for coolant hoses -1- and -2-.
- Remove coolant hose to radiator at coolant line.
- Remove intake air duct between intake manifold and charge air cooler.
- Remove mounting bolts for generator.
- Remove generator toward front.
- Disconnect wiring from removed generator.
- Unbolt following supports and braces from bracket for generator, power
steering pump and viscous fan:

Intake manifold support
Support for torque support bracket
Brace to cylinder block (remove completely)

- Remove bracket for generator, power steering pump and viscous fan
bolts -1- through -6-.
- Secure bracket for generator, power steering pump and viscous fan to
left side using wire.
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19-15

Note:
Power steering pump remains installed.

- Pull off coolant hoses from coolant pump and
coolant thermostat housing.

- Unbolt coolant pump housing from toothed belt cover (arrow).
- Remove coolant pump.

- Unbolt impeller housing -1- from pump housing -4-.
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11/18/2002 htt
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yp
e=re
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