AUDI A6 1997 C5 / 2.G AHA ATQ Engines Lubrication System Components Owner's Manual

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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17-18

- Starting in center and moving toward outside,
tighten bolts to 10 Nm (7 ft lb).

- Install new seal on oil drain plug and tighten to
30 Nm (22 ft lb).

Notes:

When installing oil pan on removed engine,
make sure oil pan is aligned with cylinder block
on flywheel side.
After installing oil pan, allow sealant to dry for
approx. 30 minutes. Only after allowing sealant
to dry may engine oil be added.

- Install subframe.

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


- Install lock carrier.
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17-19

Oil pump, removing and installing


- Remove noise insulation panel (arrows).
- Drain engine oil.
- Collect engine oil in appropriate receptacle.

Vehicles with automatic transmission - Unbolt both stabilizer mounting brackets -2- from subframe.
- Lower stabilizer not more than 10 cm (3.94 in.) and secure using wire.
- Unbolt oil cooler line bracket from right-side of oil pan.
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17-20


Checking chain tensioner - Remove oil pan (lower part) page 17
-10
.

- Insert screwdriver between chain and chain tensioner and lift against
chain tensioner.
If no spring tension is evident and chain is not under tension, chain
tensioner is damaged and must be replaced.
- Before replacing chain tensioner, remove front oil seal carrier page
17
-26
.
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17-21


- Unbolt bracket for oil supply lines (arrows) and pull front oil supply line
(longer line) down and remove.

-
Using Torx T45, unbolt chain sprocket from oil pump and pull off oil
pump.
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17-22


Installing
Installation is the reverse of removal, noting the following:
Note:
Do not use glue or sealant. - Remove oil pump together with shorter oil supply line.
- Before installing oil pump, install short oil supply line together with O-
rings into pump and into oil pan (upper part).
- 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.
- Starting in the center and moving toward the outside, tighten bolts to 10
Nm (7 ft lb).
- Install new seal on oil drain plug and tighten to 30 Nm (22 ft lb).
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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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to oil pan (upper part)
Oil seal carrier, front M6 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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