torque AUDI A6 1997 C5 / 2.G AHA ATQ Engines Lubrication System Components Workshop Manual

17-7


18 -
O-ring
Always replace
19 -
O-ring Always replace
20 -
Oil filter
21 -
Hex nut 30 Nm (22 ft lb)Threaded pipe for oil cooler and oil filter
installed in oil pan (upper part) and
tightened to 20 Nm (15 ft lb)
22 -
Oil cooler When installing, make sure O-ring is
seated correctly
23 -
Oil pump Disassembling and assembling Fig. 1Driven by chain from crankshaftTightening torque (chain sprocket to oil
pump): 25 Nm (18 ft lb) Tightening torque (oil pump to engine
block): 25 Nm (18 ft lb)
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17-8


Fig. 1 Removing and installing oil pump
1 - Oil pump
Cannot be disassembled (oil pressure release valve is integrated
with oil pump)
2 - Pressure regulation valve
Tightening torque: 40 Nm (30 ft lb)
3 - Tightening torque: 20 Nm (15 ft lb)
4 - Tightening torque: 25 Nm (18 ft lb)
5 - Chain sprocket
When installing, make sure shaft fits chain sprocket
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17-9

Oil check valve, replacing


Note:
If irregular valve noise occurs repeatedly during
short periods of driving and disappears after
extended periods of driving, the oil check valves
must be replaced.

- Remove intake manifold.

Tightening torque: 10 Nm (7 ft lb)

- Remover cover under intake manifold.

Tightening torque: 10 Nm (7 ft lb)

Note:
The opening also contains distribution line -2- for supplying jets for piston
cooling. - Replace oil check valves -1-.
Tightening torque: 25 Nm (18 ft lb)
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17-10

Oil pan (upper part) and oil pan (lower
part), removing and installing


Special tools and equipment

Drill with plastic brush attachment
Sealant D 454 300 A2
Torque wrench 10 Nm - 45 Nm

- Switch ignition off and disconnect battery
Ground (GND) strap.

CAUTION!

Before disconnecting the battery, determine
the correct coding for the anti-theft radio.

- Withdraw dipstick.

- Unbolt dipstick tube at right-front of cylinder
head, pull up and remove.

- Remove noise insulation panel (arrows).
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17-12


- Set 10-222A engine support bridge together with 10-222A/3 engine
support adapter on fender mounting edges.
- Attach 2024A engine sling to mounting eyes at front and rear of engine.
- Using 10-222A engine support bridge spindle, lift up engine as far as
possible.

- Cut tie wraps (arrows), open bracket for starter wiring and remove
wiring.
- Remove torque support at front of engine.
- Unbolt coolant line at front of engine from oil pan.
- Disconnect harness connector from oil pressure switch on left-side of
oil pan.
- Disconnect coolant lines from oil cooler underneath oil filter.
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17-17


Note:
Be especially careful when applying sealant to rear oil seal carrier (arrows
in illustration A17-0041).
Note:
Do not use glue or sealant. - Apply silicon sealant to clean sealing surface as shown in illustration.
(The illustration shows placement of sealant on cylinder block.)
- Immediately install oil pan and tighten all bolts between oil pan and
engine block to 5 Nm (44 in. lb).
- Tighten bolts between oil pan and transmission to 45 Nm (33 ft lb).
- Tighten bolts between oil pan and engine block in 2 stages in diagonal
sequence.
Finally sequence tightening torque: 15 Nm (11 ft lb)
- Tighten M10 bolts between oil pan and cylinder block to 45 Nm (33 ft
lb).
- Clean both sealing surfaces on oil pan (lower part) so they are free of
oil and grease.
- Install new gasket on oil pan (lower part) and attach to oil pan (upper
part) with two bolts diagonal to each other.
- Tighten all bolts hand tight.
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17-23

Tightening torques

Component

Tightening
torque
Oil pan to cylinder block M6 10 Nm (7 ft lb)
M8 20 Nm (15 ft
lb)
Oil pan (lower part) to oil
pan (upper part) M6 10 Nm (7 ft lb)
Oil pan to transmission M8 25 Nm (18 ft
lb)
M10 45 Nm (33 ft
lb)
Coolant line to oil pan 10 Nm (7 ft lb)
Oil drain plug in oil pan
(lower part) 30 Nm (22 ft
lb)

Component

Tightening
torque
Dipstick tube to cylinder
head M6
M8 10 Nm (7 ft lb)
25 Nm (18 ft
lb)
Oil pump to engine block 25 Nm (18 ft
lb)
Oil supply line for oil pump 10 Nm (7 ft lb)
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17-24


Component

Tightening torque
Collar screw M8 30 Nm (22 ft lb)
Stabilizer bracket to subframe 1) 25 Nm (18 ft lb)
Coolant drain plug to engine 20 Nm (15 ft lb)
Torque support stop to bracket on engine
25 Nm (18 ft lb)
Engine mount to subframe 25 Nm (18 ft lb)
Torque support to front side of oil pan 25 Nm (18 ft lb)
Engine mount to engine support 25 Nm (18 ft lb)
Chain sprocket to oil pump 25 Nm (18 ft lb)
1) Replace all self-locking nuts after removal.
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17-25


Other tightening torques Component

Tightening torque
Nut for engine mount -1- 25 Nm (18 ft lb)
Bolts -2- and -3- 60 Nm (44 ft lb)
Combination bolt -4- 2)
110 Nm (81 ft lb) + 90 2) Replace combination bolt -4- after removing.
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17-26

Front oil seal carrier and oil pump chain,
removing and installing


Removing

- Remove ribbed belt page 13
-8 .

- Remove toothed belt page 13
-12
.

- Remove oil pan (upper part) and oil pan (lower
part) page 17
-10
.

- Before removing front oil seal carrier, remove following components:
1 - Toothed belt tensioner roller
Tightening torque: 20 Nm (15 ft lb)
2 - Idler roller
Tightening torque: 45 Nm (33 ft lb)
3 - Toothed belt tensioner
Tightening torque: 20 Nm (15 ft lb)
4 - Toothed belt tensioner lever
Tightening torque: 20 Nm (15 ft lb)
5 - Crankshaft center bolt and toothed belt sprocket
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