radiator AUDI A4 1998 B5 / 1.G APB Engine Cooling System Components

AUDI A4 1998 B5 / 1.G APB Engine Cooling System Components A4 1998 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/961/w960_961-0.png AUDI A4 1998 B5 / 1.G APB Engine Cooling System Components

Page 4 of 34

AUDI A4 1998 B5 / 1.G APB Engine Cooling System Components 19-3
 
  
1 - 
Radiator 
Removing and installing   Page 19
-26
After replacing, replace coolant in complete 
system 
2 - 
Securing clip 
3 - 
Securing rubber 
4 - 
O-ring Replace if damaged
5 - 
Botto

Page 5 of 34

AUDI A4 1998 B5 / 1.G APB Engine Cooling System Components 19-4
 
  
7 - 
Retaining bolt 
8 - 
Nut 
Tightening torque: 10 Nm
9 - 
Fan ring Clipped into air ducting and secured with 
retaining bolt -Item 7 - 
10 - 
2-pin connector 
11 - 
Radiator fan (-V7-) 
1

Page 6 of 34

AUDI A4 1998 B5 / 1.G APB Engine Cooling System Components 19-5
 
  
13 - 
Radiator fan thermoswitch (-F18-), 35 Nm 
For electric fan
  Switching temperatures: Stage 1on: 92...97 Coff: 84...91 C
  Switching temperatures: Stage 2
on: 99...105 Coff: 91...98 C
1

Page 7 of 34

AUDI A4 1998 B5 / 1.G APB Engine Cooling System Components 19-6
 
  
17 - 
Bolt 
Tightening torque: 5 Nm
18 - 
Mounting rod 
19 - 
Guard plate 
20 - 
Bolt Tightening torque: 5 Nm
21 - 
Bolt Tightening torque: 5 Nm
22 - 
Radiator Removing and installing   Page

Page 11 of 34

AUDI A4 1998 B5 / 1.G APB Engine Cooling System Components 19-10
 
  
10 - 
Top coolant hose 
Secured to radiator with retaining clipCheck for secure seatingDiagram of coolant hose connections   
Page 19
-17
 
11 - 
Coolant line 
Diagram of coolant hose conne

Page 13 of 34

AUDI A4 1998 B5 / 1.G APB Engine Cooling System Components 19-12
 
  
23 - 
Bolt 
Tightening torque: 10 Nm
24 - 
Fan wheel for viscous fan 
25 - 
Viscous fan coupling Note left-hand threadTightening torque only applicable when 
using open-end spanner 3312 Tig

Page 18 of 34

AUDI A4 1998 B5 / 1.G APB Engine Cooling System Components 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 excha

Page 19 of 34

AUDI A4 1998 B5 / 1.G APB Engine Cooling System Components 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 comple

Page 20 of 34

AUDI A4 1998 B5 / 1.G APB Engine Cooling System Components 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 clo

Page 23 of 34

AUDI A4 1998 B5 / 1.G APB Engine Cooling System Components 19-22
      
The coolant concentration should not be 
reduced by adding plain water, even in warmer 
seasons and in warmer countries. The 
concentration must be at least 40 %. 
     If extra antifreez
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