1998 AUDI A4 torque

19-13


Cooling system components (on engine,
rear), removing and installing

1 -
To front water hose
2 -
Front coolant line
Diagram of coolant hose connections
Page 19
-17

3 -
Bleeder screw
Tightening torque: 20 Nm
4 -
Coolant hose From auxiliary water pump to front coolant
line
5 -
Auxiliary water pump
6 -
Coolant hose From rear coolant line to auxiliary water
pump
Pa
ge 14 of 34 Coolin
g system com
ponents, removin
g and installin
g
11/21/2002 htt
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19-14


Repair Manual, 2.7 Liter V6 5V BiTurbo Fuel
Injection & Ignition, Engine Code(s): APB, Repair Group 01
7 -
Right coolant line From turbocharger to rear coolant line
8 -
Banjo bolt Tightening torque: 35 Nm
9 -
Coolant temperature sender (-G62-) For engine control moduleIf necessary, release pressure in cooling
system before removing Checking:
10 -
Retaining clip
Check for proper seating
11 -
To heat exchanger
12 -
Rear coolant line Diagram of coolant hose connections
Page 19
-17

Pa
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g system com
ponents, removin
g and installin
g
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19-15


13 -
Bolt
Tightening torque: 10 Nm
14 -
Right coolant line From engine block to turbocharger
15 -
Banjo bolt Tightening torque: 35 Nm
16 -
Banjo bolt Tightening torque: 35 Nm
17 -
Right coolant line From engine block to turbocharger
18 -
From heat exchanger
19 -
To front coolant hose
Pa
ge 16 of 34 Coolin
g system com
ponents, removin
g and installin
g
11/21/2002 htt
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19-16


20 -
Coolant line
Diagram of coolant hose connections
Page 19
-17

21 -
Bleeder screw
Tightening torque: 20 Nm
22 -
Banjo bolt Tightening torque: 35 Nm
23 -
Left coolant line From turbocharger to rear coolant line
24 -
Sender for auxiliary water pump 2-pinIf necessary, release pressure in cooling
system before removing
25 -
To oil cooler
26 -
Retaining clip Check for proper seating
Pa
ge 17 of 34 Coolin
g system com
ponents, removin
g and installin
g
11/21/2002 htt
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19-23

- Replace O-ring on coolant drain screw and
screw drain screw back into engine.

Tightening torque: 20 Nm

- Install bottom coolant hose and secure.

- Close coolant drain tap on radiator.

- Screw adapter VAG 1274/8 onto expansion tank and insert extension
VAG 1274/10 into the adapter.

- Loosen coolant hose on heat exchanger and pull back hose far enough
so that bleeder hole in hose -arrow- is no longer covered by
connection.
- Fill up coolant until it comes out at bleeder hole in coolant hose.
- Push coolant hose onto connection and tighten.
Pa
ge 25 of 34 Coolin
g system com
ponents, removin
g and installin
g
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19-28


Installing
Install in the opposite order to removing. When installing, note the
following points:
Tightening torques - Release two retaining pins for radiator and pull out upward -arrows-.
- Pivot radiator toward front and lift out.
- Fill with coolant Page 19
-19
.
Component
Nm
Condenser to radiator 10
Cooling lines to radiator 10
Pressurizing fan to radiator 10
Pa
ge 30 of 34 Coolin
g system com
ponents, removin
g and installin
g
11/21/2002 htt
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19-31

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

- Remove residues of sealant on sealing surfaces
of coolant pump and cylinder block.

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

- Fit new gasket on coolant pump flange.

- Insert coolant pump into cylinder block and tighten all 9 securing bolts -
2-.
- Secure rear toothed belt guard at coolant pump housing -1-.
Tightening torque: 10 Nm.
- Install toothed belt Page 13
-4 .
- Install ribbed belt Page 13
-1 .
- Install toothed belt guard.
- Fill cooling system Page 19
-19
.
Pa
ge 34 of 34 Coolin
g system com
ponents, removin
g and installin
g
11/21/2002 htt
p://127.0.0.1:8080/audi/servlet/Dis
play?action=Goto&t
yp
e=re
pair&id=AUDI.B5.GE05.19.1