oil AUDI A4 1998 B5 / 1.G APB Engine Cooling System Components
Page 12 of 34
19-11
15 -
To front coolant line
Diagram of coolant hose connections
Page 19
-17
16 -
Bolt
Tightening torque: 10 Nm
17 -
Bolt Tightening torque: 25 Nm
18 -
Lower coolant line Diagram of coolant hose connections
Page 19
-17
19 -
Oil cooler
20 -
Bolt
Tightening torque: 25 Nm
21 -
Bolt Tightening torque: 10 Nm
22 -
Belt pulley For viscous fan
Pa
ge 12 of 34 Coolin
g system com
ponents, removin
g and installin
g
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Page 17 of 34
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
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g and installin
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Page 19 of 34
19-18
8 -
Rear coolant line
9 -
Cap for expansion tank
10 -
Expansion tank
11 -
Oil cooler
12 -
Radiator
Removing and installing Page 19
-26
After replacing, replace coolant in complete
system
13 -
Coolant pump
14 -
Connection For thermostat
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Page 22 of 34
19-21
G 12 and coolant additives complying with
specification "VW 774 D" prevent frost and
corrosion damage, scaling and also raise the
boiling point of the coolant. For this reason the
system must be filled all year round with the
correct additive for frost and corrosion
protection.
Particularly in countries with tropical climates,
the higher boiling point of the coolant improves
engine reliability when working under heavy
load.
The system must be protected against frost to
about -25 C (in arctic climates to about -35
C).
Use special tool T40007 to test coolant concentration and antifreeze
protection.
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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
.
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g and installin
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