1999 AUDI A4 APB Engine Lubrication System Components Workshop Manual

17-53

- Clean both sealing surfaces for lower section of
oil pan; ensure that they are free of oil and
grease.

Note:
Do not use any adhesive or sealant.

- Install new gasket on lower section of oil pan
and install on upper section of oil pan with two
diagonally opposite bolts.

- Tighten all securing bolts hand-tight.

- Tighten bolts to 10 Nm with torque wrench,
working from the center outwards.

- Install new seal on oil drain plug and tighten to
30 Nm.

- Fill up engine oil.

Repair Manual, Maintenance


- Install subframe.

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Repair Manual, Suspension, Wheels,
Steering, Repair Group 40


- Install lock carrier in normal position.

Repair Manual, Body Exterior, Repair Group
50


- Install bumper.

Repair Manual, Body Exterior, Repair Group
63

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17-54

Tightening torques

Component

Nm
Chain sprocket to oil pump 25
Lower section of oil pan to upper section
of oil pan 10
Oil drain plug in lower section of oil pan 30
Oil pump to cylinder block 25
A/C compressor to bracket 25
Oil pump supply lines to upper section of
oil pan 10
Bracket for A/C lines to oil pan 10
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Front sealing flange and oil pump drive
chain, removing and installing


Removing

- Remove ribbed belt Page 13
-1 .

- Remove toothed belt Page 13
-4 .

- Drain engine oil.

Use a separate container to collect the engine
oil.
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Notes: - Remove lower section of oil pan.
- Unbolt cover plate for oil pump sprocket (-2-).
When loosening bolt -2- securing cover plate, counter-hold at welded
nut. When installing, make sure that the plate engages in position -arrows-.

- Unbolt both oil supply lines -1- and -3- from upper section of oil pan
and pull longer of two lines away downward.
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- Remove 4 bolts from upper section of oil pan.

- Remove following components before unbolting front sealing flange:
1 - Tensioning roller for toothed belt: 20 Nm
2 - Idler wheel: 45 Nm
3 - Toothed belt tensioner: 10 Nm
4 - Lever for toothed belt tensioner: 20 Nm
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Replacing oil pump drive chain - Unbolt front sealing flange and take off gasket for front sealing flange
M6 bolts: 10 Nm M8 collar bolt: 30 Nm

- Remove bolt securing chain sprocket to oil pump using Torx T45, and
pull sprocket off oil pump.
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Removing and installing chain sprocket on crankshaft Page 17
-62
.
Installing
Install in the opposite order to removing. When installing, note the
following points:
Note:
The front sealing flange must be installed within 5 minutes of applying
silicone sealant D 454 300 A2. - Remove oil pump together with shorter oil supply line.
- Take out oil pump sprocket and remove drive chain from crankshaft.
- Remove any residues of sealant on front of oil pan or engine block, if
necessary.
- Clean sealing surfaces; ensure that they are free of oil and grease.
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