1997 AUDI A4 APB Engine Lubrication System Components Workshop Manual

17-60


- Do not apply any sealant on sealing surface -A- of the cylinder block.
- After installing gasket on sealing surface -A-, apply a small quantity of
sealant to joints between two arrows -left and right-.

Note:
The bead of sealant must not be thicker than 3 mm, as otherwise excess
sealant may enter the oil pan and block the strainer in the oil intake line. - Cut off nozzle of tube at front marking (diameter of nozzle approx. 3
mm).

Thickness of sealant bead: 2 ... 3 mm
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17-61


- Make sure sealing surface is clean and then apply silicone sealant on
sealing surfaceof front sealing flange, as shown in illustration.
( Illustration shows where bead of sealant is applied.)
- Use installing sleeve 3202/1 to install sealing flange. Locate sealing
flange in position immediately and tighten all 4 bolts in oil pan hand-
tight initially.
- Tighten bolts securing sealing flange Tightening torque: Front sealing
flange: M6 10 Nm, M8 20 Nm 4 bolts in oil pan: 10 Nm
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17-62

Chain sprocket for oil pump on
crankshaft, removing and installing


Removing
Removing and installing front sealing flange and
oil pump drive chain Page 17
-55
.

Installing
Notes: - Pull chain sprocket off crankshaft using a normal commercial-type
puller -2-: use a suitable washer -1- to protect end of crankshaft.
-
Heat chain sprocket in oven for about 15 minutes at 220 C.
Wear protective gloves. Installation position: it should be possible to read the lettering on the
chain sprocket.

Removing and installing front sealing flange and oil pump drive chain
Page 17
-55
. - Using pliers, install chain sprocket on end of crankshaft and push
against stop on crankshaft with drift sleeve 30-100. If necessary knock
on carefully using a plastic hammer.
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17-63

Crankshaft oil seal - pulley end,
replacing


Removing

- Remove bumper.

Repair Manual, Body Exterior, Repair Group
63


- Move lock carrier to service position

Repair Manual, Body Exterior, Repair Group
50


- Remove ribbed belt Page 13
-1 .

- Remove toothed belt Page 13
-4 .

- Remove sealing plug from hole in cylinder block
(left side).

-
Position crankshaft to TDC of No. 3 cylinder.
Crankshaft TDC drilling should be visible (or it
should be possible to feel the drilling) in sealing
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plug hole.

- Screw clamping bolt 3242 into hole so that crankshaft is secured
against turning.
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17-64

- Remove crankshaft toothed belt sprocket.

- Remove inner part of oil seal extractor 3203 two
turns (approx. 3 mm) out of outer part and lock
with knurled screw.

Installing - Lubricate threaded head of oil seal extractor, place it in position and,
exerting firm pressure, screw it in as far as possible into oil seal.
- Loosen knurled screw and turn inner part against crankshaft until oil
seal is pulled out.
- Place guide sleeve 3202/1 onto crankshaft journal.
- Slide dry seal over guide sleeve.

Then proceed as for removing, performing steps in reverse order. - Press oil seal in flush with installing sleeve 3265.
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17-65

Oil pressure and oil pressure switch,
checking


Note:
Servicing and checking function of oil pressure
warning lamp and buzzer:

Electrical Wiring Diagrams, Troubleshooting &
Component Locations

Test procedure

- Remove oil pressure switch (F1) and screw oil pressure switch into
tester.
- Screw tester into oil pan in place of oil pressure switch.
- Connect brown wire of tester to ground (GND) (-).
- Using test leads from VAG 1594, connect diode test lamp VAG 1527
between positive battery terminal (+) and oil pressure switch.
- Start engine and gradually increase engine speed.
LED should light up at 1.2...1.6 bar, otherwise replace oil pressure
switch.
- Increase engine speed further.

At 2000 RPM and an oil temperature of 80 C oil pressure should be at
least 2.0 bar.
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17-66

Engine oil, specifications

A high-quality multigrade oil is put in at the
factory: this can be used all year round, except in
extremely cold climates.

Viscosity grades and oil specifications
Viscosity grades and oil specifications
Repair Manual, Maintenance
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