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

17-1


Lubrication system
components, removing and
installing

Note:

If large quantities of metal shavings or particles
are found in the engine oil when repairing the
engine, all oil passages must be cleaned
carefully, and the oil cooler replaced in order to
prevent further damage occurring later.
The oil level must not be above max. mark on
dipstick - danger of damage to catalytic
converter!
Oil spray jet and pressure relief valve Fig.
1 , Page 17
-6
Viscosity grades and oil specifications:

Repair Manual, Maintenance

Oil system capacity:

Repair Manual, Maintenance

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17-2


Part I - Oil pump/oil pan components

1 -
28 Nm
2 -
Limit stop for torque reaction support
3 -
Oil pan
Apply silicone sealant D 176 404 A2 before
installing Removing and installing Page 17
-11
4 -
Oil pan
With pressure relief valve (12 bar)Removing and installing Page 17
-28
Before installation check whether the two
dowel sleeves -Pos. 12 - for the
centralizing of the oil pump/cylinder block
are present Replace pump if there is scoring on moving
surfaces and gear teeth Tightening torque for oil pump cover to oil
pump housing: 10 Nm
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17-3


5 -
Chain sprocket for oil pump
Sprocket can only be installed on oil pump
shaft in one position
6 -
22 Nm
7 -
Drive chain for oil pump Mark direction of rotation before removingCheck for wear
8 -
15 Nm
9 -
Sealing flange - front Apply silicone sealant D 176 404 A2
Page 13
-56

Replacing crankshaft oil seal on pulley end
Page 13
-51

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17-4


10 -
Chain tensioner
Tighten to 16 NmDo not disassembleNote installation positionPre tension spring and engage before
installing If spring is broken replace chain tensioner
complete
11 -
Chain sprocket for oil pump Removing and installing Page 13
-77
12 -
Dowel sleeves
2 pieces
13 -
O-ring Always replace
14 -
16 Nm
15 -
Suction pipe Clean strainer if soiled
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17-5


16 -
Baffle plate
17 -
16 Nm
18 -
15 Nm
Tighten in stages and in diagonal
sequence Observe tightening sequence Page 17
-
25

19 -
40 Nm
20 -
Sealing ring
Always replace
21 -
Oil drain plug, 30 Nm
22 -
Gasket Always replace
23 -
10 Nm
24 -
Oil return pipe From exhaust turbocharger
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17-6


Fig. 1 Oil spray jet and pressure relief valve
1 - Oil spray jet (for piston cooling)
2 - Bolt with pressure relief valve - 27 Nm

Opening pressure 1.3 to 1.6 bar
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17-7


Part II - Oil filter bracket components

1 -
Screw plug - 40 Nm
2 -
Sealing ring
Always replace
3 -
Spring For pressure relief valve, approx. 4 bar
4 -
Piston For pressure relief valve, approx. 4 bar
5 -
Gasket Always replace
6 -
Oil retention valve Tighten to 8 NmBuilt into oil filter bracket
7 -
O-ring Always replaceSlide on until flush with collar on pipe -Item
9 -
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17-8


8 -
Locking clip
9 -
Pipe
For crankcase breather
10 -
20 Nm Install with locking fluid D 000 600 A2
11 -
Bottom coolant pipe
12 -
Screw plug - 15 Nm
13 -
Sealing ring If seal is leaking, cut open and replace
14 -
Oil supply pipe To turbocharger
15 -
Banjo bolt - 30 Nm
16 -
Seals Always replace
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17-9


Repair Manual, Maintenance
17 -
Oil pressure switch -F1-, 1.4 bar - 25 Nm
Black insulationChecking Page 17
-30
18 -
Sealing ring
If seal is leaking, cut open and replace
19 -
15 Nm +
1/4 turn (90 ) further
Always replace
20 -
Gasket Always replaceEngage in projections on oil cooler
21 -
Oil filter Observe change intervalsObserve installation instructions on oil filterTighten to 20 Nm
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17-10


22 -
25 Nm
23 -
Oil cooler
See note Page 17
-1
Ensure clearance to adjacent componentsCoolant hose connection diagram Page 19
-2
24 -
Oil filter bracket
With pressure relief valve, approx. 4 bar
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