AUDI A4 1999 B5 / 1.G AFC Engine Lubrication System Components Workshop Manual

AUDI A4 1999 B5 / 1.G AFC Engine Lubrication System Components Workshop Manual A4 1999 B5 / 1.G AUDI AUDI https://www.carmanualsonline.info/img/6/983/w960_983-0.png AUDI A4 1999 B5 / 1.G AFC Engine Lubrication System Components Workshop Manual

Page 1 of 15

AUDI A4 1999 B5 / 1.G AFC Engine Lubrication System Components Workshop Manual 17-1
 
  
Lubrication system 
components, removing and 
installing  Special tools
 
The following special tools and test equipment are 
required for these operations  
VAG 1342  
Oil pressure tester

Page 2 of 15

AUDI A4 1999 B5 / 1.G AFC Engine Lubrication System Components Workshop Manual 17-2
 
  
Component layout
 
Modified oil circuit 
CAUTION! 
Do NOT overfill with oil past the MAX mark on 
the oil dipstick. Damage to the three way 
catalytic converter could result. 
Note: 
 
Alway

Page 3 of 15

AUDI A4 1999 B5 / 1.G AFC Engine Lubrication System Components Workshop Manual 17-3
 
  
6 - 
Oil pan, lower 
7 - 
10 Nm (7 Nm) 
8 - 
Oil drain plug 
40 Nm (30 ft lb)
9 - 
Cover With integrated 5 bar (72 psi) and 11 bar 
(159 psi) pressure relief valves 
10 - 
Oil cooler 
11 -

Page 4 of 15

AUDI A4 1999 B5 / 1.G AFC Engine Lubrication System Components Workshop Manual 17-4
      
Oil pump, removing
 
     
Note:  
     If irregular valvetrain noises occur and disappear 
after a lengthy drive, but always re-occur on 
short drives, replace the oil retention valves.

Page 5 of 15

AUDI A4 1999 B5 / 1.G AFC Engine Lubrication System Components Workshop Manual Screw plugToothed belt tensioner 45 Nm   (33 ft lb)  
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Page 6 of 15

AUDI A4 1999 B5 / 1.G AFC Engine Lubrication System Components Workshop Manual 17-5
      
Oil retention valves, replacing
 
     
Note:  
     
The oil retention valves must be replaced if the 
valvetrain sounds noisy on short drives, 
although the noise may go away on longer

Page 7 of 15

AUDI A4 1999 B5 / 1.G AFC Engine Lubrication System Components Workshop Manual 17-6
 
  
Revised oil circulation system
 
Note: 
 
Modifications compared to previous 2.8 liter V6 
(Audi 90, Audi 100). 
 Only the modified components should be 
installed on this engine. 
1 - 
Oil

Page 8 of 15

AUDI A4 1999 B5 / 1.G AFC Engine Lubrication System Components Workshop Manual 17-7
 
  
7 - 
Pressure relief valve 11 bar 
New
8 - 
Oil pick-up New
9 - 
Oil pressure switch 1.8 bar Color: BrownChecking  page 17
-9
Dynamic oil pressure warning system 
function  page 17
-11
 
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Page 9 of 15

AUDI A4 1999 B5 / 1.G AFC Engine Lubrication System Components Workshop Manual 17-8
 
  
Function of revised oil circulation  
Intake side 
Oil is taken in from the oil pump -6- via the oil pick-
up pipe -8-.  
Pressure side 
Oil pressure comes from the oil pump -6- through 
the

Page 10 of 15

AUDI A4 1999 B5 / 1.G AFC Engine Lubrication System Components Workshop Manual 17-9
      
Oil pressure and oil pressure switch, 
checking
 
      Operational test and servicing the visible and 
audible oil pressure indicator:  
     
       Electrical Wiring Diagrams, Troublesh
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