AUDI A4 1999 B5 / 1.G APB Engine Cooling System Components
A4 1999 B5 / 1.G
AUDI
AUDI
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AUDI A4 1999 B5 / 1.G APB Engine Cooling System Components
Page 16 of 34
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
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g system com
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11/21/2002 htt
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Page 18 of 34
19-17
Coolant hose connections, diagram
1 -
Bottom coolant hose
From radiator to engine
2 -
Cylinder head/ cylinder block
3 -
Right turbocharger
4 -
Auxiliary water pump
5 -
Heat exchanger for heater system
6 -
Coolant hose To heat exchanger
7 -
Left turbocharger
Pa
ge 18 of 34 Coolin
g system com
ponents, removin
g and installin
g
11/21/2002 htt
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yp
e=re
pair&id=AUDI.B5.GE05.19.1
Page 20 of 34
19-19
Cooling system, draining and filling
Draining
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 filler cap on coolant expansion tank.
- Remove noise insulation panel.
- Place drip tray VAG 1306 under the engine.
- If bumper has been removed from vehicle, open drain tap -arrow- on
bottom of radiator (left side) by turning anti-clockwise. Fit drain hose on
connection if necessary.
- If bumper has not been removed from vehicle, pull out retaining clip on
bottom hose going from radiator to engine (right side), and pull hose off
radiator.
Pa
ge 20 of 34 Coolin
g system com
ponents, removin
g and installin
g
11/21/2002 htt
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Page 31 of 34
19-29
Coolant pump, removing and installing
Notes:
Always replace seals and gaskets.
Cover toothed belt with a cloth to protect it from
coolant before removing coolant pump.
Removing
- Remove front bumper.
Repair Manual, Body Exterior, Repair Group
63
- Move lock carrier to service position.
Repair Manual, Body Exterior, Repair Group
50
- Remove ribbed belt Page 13
-1 .
- Remove toothed belt Page 13
-4 .
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ge 31 of 34 Coolin
g system com
ponents, removin
g and installin
g
11/21/2002 htt
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pair&id=AUDI.B5.GE05.19.1
Page 34 of 34
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