Volkswagen Fox (2004 year). Manual — part 30
.
– Select
engine control
.
– Select
functions
.
– Select
function or component
.
Fox 2004 ➤
2. Engine command unit
117
Exhaust system components - re‐
move and install
Note
♦
Removing and installing exhaust manifold
⇒ page 101
♦
After repairing the exhaust system, check that there is no volt‐
age and the clearance with the body is sufficient. When re‐
quired, loosen double clamp (or clamps) and align silencer and
exhaust tube so that sufficient body clearance is maintained,
and the weight is evenly distributed on the supports.
♦
Always replace self-locking nuts.
WARNING
Always replace self-locking nuts and screws subject to angular
torque
Fox 2004 ➤
118
2 - Self-locking nut
❑ 25 Nm
❑ Replace after each re‐
moval.
3 - Support strap
❑ Replace if damaged.
4 - Front exhaust pipe with cat‐
alytic converter
5 - Marking
6 - Dimension -a- = 5 mm
7 - Double clamp
8 - Self-locking nut
❑ 40 Nm
❑ Replace after each re‐
moval
9 - Support
❑ With support strap.
❑ Replace if damaged.
10 - 25 Nm
11 - Rear silencer
Fox 2004 ➤
1. Exhaust system components - remove and install
119
Note
♦
The control of the exhaust gas recirculation system is carried
out by the Direct injection diesel system control unit -J248- via
the Exhaust gas recirculation (EGR) valve -N18- .
♦
The tapered plunger of the Exhaust gas recirculation valve -
N18- enables the cross-section variation in function of the
different plunger positions.
♦
The control by pulses makes feasible all the valve opening
positions.
♦
Always replace self-locking nuts.
2.1
Exhaust gas recirculation system components - remove and install
1 - Intake manifold
2 - Sealing ring
❑ Replace.
3 - Intake connection flange
4 - Exhaust gas recirculation
valve -N18-
❑ Integral part of intake
flange
❑ Can only be replaced to‐
gether with the intake
flange.
5 - Intake manifold valve motor
-V157-
6 - 10 Nm
7 - From the intercooler
8 - Exhaust manifold
9 - Gasket
❑ Replace.
10 - Radiator
❑ For exhaust gas recircu‐
lation.
11 - 25 Nm
12 - For heat exchanger
13 - 25 Nm
14 - 25 Nm
15 - From engine head
Fox 2004 ➤
120
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