Volkswagen Touareg (2003 year). Manual — part 39
Assembly overview - silencers with mountings
1 - Exhaust tailpipe
2 - Rear silencer
❑ Centre and rear silenc‐
ers are installed as a
single component dur‐
ing production. In case
of repair, the centre and
rear silencers are sup‐
plied separately, with a
double repair clamp for
connecting.
❑ In case of repair, align
rear silencer free of
stress.
3 - Mounting
❑ Installation position
.
❑ Renew if damaged.
4 - 25 Nm
5 - Exhaust tailpipe
6 - Separating point
❑ For repair cases
❑ Marked by impressions
on exhaust pipe.
❑ Centre and rear silenc‐
ers are installed as a
single component dur‐
ing production. In case
of repair, the centre and
rear silencers are sup‐
plied separately, with a
double repair clamp for
connecting.
❑ Cut through connecting
pipe at right angles at
separating point using e.g. pneumatic sabre saw -V.A.G 1523A- .
❑ The notches to the left and right of the separating points must be visible following the installation of the
double clamp.
7 - Mounting
❑ Installation position
❑ Renew if damaged.
8 - 25 Nm
9 - Mounting
❑ Installation position
10 - Double clamp
❑ Must be slid to its mid-point on forward exhaust pipe.
❑ Note installation position: Securing bolt ends must not project beyond lower edge of clamp.
11 - Mounting
❑ Installation position
12 - Double clamp, 40 Nm
❑ Must be slid to its mid-point on forward exhaust pipe.
Touareg 2003 ➤
1. Removing and installing parts of exhaust system
153
❑ Centre and rear silencers are installed as a single component during production. In case of repair, the
centre and rear silencers are supplied separately, with a double repair clamp for connecting.
15 - Double clamp
❑ For repair cases
❑ Installation position
.
Installation position, double repair clamp in direction of travel
– The end of bolt -1- must not project beyond lower edge of
double clamp.
– The angle -2- must be 10° + 5°.
Aligning exhaust system
• Exhaust system cold
– Push exhaust system in direction of travel -1- and tighten dou‐
ble clamps until dimension -a- is attained at the mountings.
Centre silencer: dimension a = 10 mm; Rear silencer: dimen‐
sion a = 15 mm
Touareg 2003 ➤
154
Secondary air system
Function
The secondary air system blows air in behind the exhaust valves
for max. 65 seconds after a cold start (+15°C … +35°C coolant
temperature). This produces an oxygen rich exhaust gas, causing
afterburning and reducing the heat-up phase of the catalytic con‐
verter. The engine control unit activates the system via the sec‐
ondary air pump relay -J299- to the secondary air inlet valve -
N112- and combination valve. Additionally, after each
subsequent engine start (up to max. 80 C engine temperature),
the secondary air system will, after a 20 second delay, switch in
for 5 seconds during idling and will be checked by the self-diag‐
nosis.
Assembly overview - removing and installing parts of secondary
air system
2.1
Assembly overview - removing and in‐
stalling parts of secondary air system
Note
Secondary air pump relay -J299-
Touareg 2003 ➤
2. Secondary air system
155
❑ For cylinder bank 1.
2 - 10 Nm
3 - To secondary air inlet valve
-N112-
4 - Combination valve
❑ For cylinder bank 2.
5 - Gasket
6 - Connecting hose
❑ From cylinder bank 1 to
cylinder bank 2.
7 - Secondary air inlet valve -
N112-
8 - 10 Nm
9 - Bracket
10 - Vacuum reservoir
11 - Hose coupling
❑ Press together at front
to release.
12 - Pressure hose
❑ Check for secure seat‐
ing.
❑ Press together at front
to release.
13 - Secondary air pump motor
-V101-
14 - From air filter.
15 - Pressure pipe
❑ Bolted to cylinder head
cover.
16 - 8 Nm
17 - 10 Nm
18 - To secondary air inlet valve -N112-
Secondary air pump relay -J299-
Note
♦
The secondary air pump relay -1- is in socket A4.
♦
If tools are necessary to pull relays or control units out of the
relay plate, first disconnect battery earth strap ⇒ Electrical
ies.
Touareg 2003 ➤
156
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст