AUDI A3 1998 8L / 1.G AEB ATW Engines Cooling System Components User Guide
								
                                
                
                
                Manufacturer: AUDI, Model Year: 1998,
                  Model line: A3,
                  Model: AUDI A3 1998 8L / 1.G
                
                
                 Pages: 34, PDF Size: 0.54 MB
                    
                							
              
              
  
                
              
              
    
        
         
         
  
                                   
  AUDI A3 1998 8L / 1.G AEB ATW Engines Cooling System Components User Guide
  A3 1998 8L / 1.G
  AUDI
  AUDI
  https://www.carmanualsonline.info/img/6/946/w960_946-0.png
  AUDI A3 1998 8L / 1.G AEB ATW Engines Cooling System Components User Guide
            
        
  
 
Trending: low oil pressure, radiator cap, radio, checking oil, gas type, air condition, coolant temperature
Page 11 of 34
19-10
      
-  Start engine and maintain an engine speed of 
about 2000 RPM for approx. 3 minutes. 
     
-  Allow engine to idle until the lower radiator hose 
is hot.Check coolant level and top up if 
necessary. When engine is at normal operating 
temperature, coolant level must be at max. 
mark; when engine is cold, between min. and 
max. marks. 
     
WARNING! 
     
The cooling system is pressurized when the 
engine is warm. When opening the expansion 
tank, wear gloves and other appropriate 
protection, cover the cap using a cloth, and 
open carefully to relieve system pressure 
slowly. 
     
-  Switch engine off.
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        Page 12 of 34
19-11
 
  
Coolant pump and coolant thermostat, 
servicing
 
1 - 
Bolt 
M6: 10 Nm (7 ft lb)M8: 20 Nm (15 ft lb)
2 - 
Lower toothed belt cover Removing and installing   Page 13
-29
3 - 
Nut 
10 Nm (7 ft lb)
4 - 
Coolant pump Removing and installing   Page 19
-13
Check for ease of movement
5 - 
Gasket Always replace
6 - 
O-ring Always replace
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        Page 13 of 34
19-12
 
  
7 - 
T-head bolt 
Insert before installation
8 - 
Coolant thermostat Removing and installing   Page 19
-20
Checking  Page 19
-20
9 - 
Connector 
10 - 
Drain plug 
30 Nm (22 ft lb)
11 - 
O-ring Always replace
12 - 
Belt pulley Installed position: flat pulley half faces 
coolant pump 
13 - 
Socket-head bolt 25 Nm (18 ft lb)
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        Page 14 of 34
19-13
      
Coolant pump, removing and installing
 
     
Note:  
     Coolant pump is bolted to bracket for generator, 
power steering pump and viscous fan. 
     
Lock carrier in service position   Page 13
-1 
     
Removing  
     
CAUTION! 
     
Before disconnecting the battery: 
     
Stop the engine.
     Determine the correct coding for the anti-
theft radio. 
     Switch the ignition off (also applies when 
connecting the battery). Failure to do so may 
damage the Engine Control Module (ECM). 
    
-  Switch ignition off and disconnect battery Ground (GND) strap.
-  Remove ribbed belt   Page 13
-15
 .
-  Remove viscous fan (with belt pulley)   Page 13
-14
 , Fig.   1
 .
- Remove V-belt   Page 13
-18
 .
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        Page 15 of 34
Note:  
Ribbed belt for A/C compressor and torque support remains installed. 
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        Page 16 of 34
19-14
      
- Drain coolant   Page 19
-4 .
    
-  Loosen clamps for coolant hoses -1- and -2-.
-  Remove coolant hose to radiator at coolant line.
-  Remove intake air duct between intake manifold and charge air cooler.
-  Remove mounting bolts for generator.
-  Remove generator toward front.
-  Disconnect wiring from removed generator.
-  Unbolt following supports and braces from bracket for generator, power 
steering pump and viscous fan: 
 
Intake manifold support
 Support for torque support bracket
 Brace to cylinder block (remove completely)
    
-  Remove bracket for generator, power steering pump and viscous fan 
bolts -1- through -6-. 
-  Secure bracket for generator, power steering pump and viscous fan to 
left side using wire. 
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        Page 17 of 34
19-15
      
Note:  
     Power steering pump remains installed. 
     
-  Pull off coolant hoses from coolant pump and 
coolant thermostat housing. 
    
-  Unbolt coolant pump housing from toothed belt cover (arrow).
-  Remove coolant pump. 
    
-  Unbolt impeller housing -1- from pump housing -4-.
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        Page 18 of 34
19-16
      
Installing  
      Installation is the reverse of removal, noting the 
following:  
     
-  Clean sealing surfaces of both housings.
     
-  Replace gasket and O-ring.
     
-  Insert T-head bolt into coolant pump bore.
    
-  Mount bracket for generator, power steering pump and viscous fan with 
coolant pump on cylinder block and tighten bolts in numerical 
sequence. 
1 - M8 x 70 bolt
2 - M8 x 110 bolt
3 - M8 x 50 bolt
4 - M8 x 90 bolt
5 - M8 x 70 bolt
6 - M8 x 100 bolt
-  Install viscous fan   Page 13
-14
 , Fig.   1
 .
- Install ribbed belt   Page 13
-17
 .
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        Page 19 of 34
19-17
      
Note:  
     When installing ribbed belt, check for correct 
seating on belt pulley. 
     
- Install V-belt   Page 13
-18
 .
     
-  Fill up with coolant   Page 19
-6 .
     
WARNING! 
     
The cooling system is pressurized when the 
engine is warm. When opening the expansion 
tank, wear gloves and other appropriate 
protection, cover the cap using a cloth, and 
open carefully to relieve system pressure 
slowly. 
     
CAUTION! 
     
Be sure the ignition is switched OFF. Failure 
to do so may damage the Engine Control 
Module (ECM). 
     
-  Switch ignition off and reconnect battery Ground 
(GND) strap. 
     
-  After connecting battery, enter anti-theft code for 
radio. 
     
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        Page 20 of 34
       Radio Operating Manual        
-  Fully close power windows to stop.
     
-  Operate all power window switches again for at 
least one second in "close" direction to activate 
"one-touch" opening/closing function. 
     
-  Set clock to correct time.
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Trending: transmission, checking oil, diagram, gas type, coolant temperature, air filter, wiring