diagram AUDI A4 1997 B5 / 1.G APB Engine Cooling System Components
[x] Cancel search | Manufacturer: AUDI, Model Year: 1997, Model line: A4, Model: AUDI A4 1997 B5 / 1.GPages: 34, PDF Size: 0.64 MB
Page 3 of 34

19-2
      
Cooling system components (on body), 
removing and installing
 
     
Notes:  
     
Parts of cooling system on engine   Page 19
-
8 . 
     
Diagram of coolant hose connections   Page 19
-17
 . 
     
Draining and filling with coolant   Page 19
-
19
 . 
     
Coolant mixture ratios   Page 19
-19
 , draining 
and filling cooling system. 
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Page 4 of 34

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 - 
Bottom coolant hose Secured to radiator with retaining clipCheck for secure seatingDiagram of coolant hose connections   
Page 19
-17
 
6 - 
Rubber washer 
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Page 6 of 34

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
14 - 
Seal 
Always replace
15 - 
Drain screw Tightening torque: 10 Nm
16 - 
Top coolant hose Secured to radiator with retaining clipCheck for secure seatingDiagram of coolant hose connections   
Page 19
-17
 
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Page 10 of 34

19-9
 
  
5 - 
Filler cap 
Test with cooling system tester VAG 1274 
and adapter VAG 1274/9 Test pressure 1.4...1.6 bar
6 - 
O-ring Replace if damaged
7 - 
Bolt Tightening torque: 10 Nm
8 - 
Expansion tank Carry out leak test of cooling system with 
cooling system tester VAG 1274 and 
adapter VAG 1274/8 
9 - 
To rear water line Diagram of coolant hose connections   
Page 19
-17
 
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Page 11 of 34

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 connections   
Page 19
-17
 
12 - 
Rear toothed belt guard 
13 - 
Gasket 
Always replace
14 - 
Coolant pump Check that pump runs freelyIf damaged or leaking replace completeRemoving and installing   Page 19
-29
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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
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Page 13 of 34

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 Tighten to 37 Nm
26 - 
Bolt Tightening torque: 25 Nm
27 - 
Bracket For viscous fan
28 - 
From bottom of radiator Diagram of coolant hose connections   
Page 19
-17
 
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Page 14 of 34

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 
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Page 15 of 34

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
 
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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
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