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EXHAUST
Catalytic converter
19
NOISE FROM THE EXHAUST PIPE
The vehicle should be tested in order to localise
the source of the noise (if necessary with the cu-
stomer present). The fault should then be repro-
duced when the vehicle is stationary, if possible.
To do this, accelerate sharply in order to cover a
wide range of engine resonance.
Having reproduced the noise:
- ensure there is no contact between the
exhaust pipe and the vehicle body,
- check the alignment, conformity and
condition of the exhaust system,
- attempt to eliminate the noise noted by
tightening the exhaust pipe or the heat
shields at fault.
If the noise is found to be caused by the catalytic
converter, remove it and carry out the following
checks:
- visual examination of the inside of the shell
(melted monolyth).
- listen to the catalytic converter after shaking
it (split monolyth or foreign body present).
If the monolyth has melted, the cause must be
determined (see chapter 14: checks to be made
before the anti-pollution test) and check that
catalytic particles have not blocked the exhaust
system further down the pipe.
Only if one of the observations specified above is
noted should the catalytic converter be replaced.
19-15
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EXHAUST
Exhaust pipe assembly
19
PRESENTATION OF EXHAUST PIPES AND CUTTING ZONES
99233R
1 Expansion chamber
2 Silencer
ZC Exhaust pipe cutting zone
99237R
E7J engine K7M engine
19-16
Page 291 of 2492
EXHAUST
Exhaust pipe assembly
19
PRESENTATION OF EXHAUST PIPES AND CUTTING ZONES
99236R
1 Catalytic converter
2 Expansion chamber
3 Silencer
ZC Exhaust pipe cutting zone
99235R
F3R engine F8Q engine
without catalytic converter
19-17
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EXHAUST
Exhaust pipe assembly
19
PRESENTATION OF EXHAUST PIPES AND CUTTING ZONES
99234R
1 Catalytic converter
2 Silencer
ZC Exhaust pipe cutting zoneF8Q engine
with catalytic converter
19-18
Page 293 of 2492
Mot. 1199 Exhaust pipe cutting tool
Mot. 1265
Pliers for removing quick release
unions
Mot 1265-01
FUEL TANK
Fuel tank
19
IMPORTANT :
during the complete removal and refitting opera-
tion, do not smoke and keep all heat sources
away from the working area.
DRAINING THE FUEL TANK (petrol version)
Remove the plastic access cover (under the rear
right hand seat).
Remove the clip (if fitted).
Disconnect the quick release union (1), Mot. 1265
(see below for details on fitting the pliers).
EQUIPMENT REQUIRED
INTAIRCO pneumatic pump for draining the fuel tank
(petrol or diesel), (see EQUIPMENT 95 catalogue).
Piston pump 333 (for draining diesel fuel tank).
SPECIAL TOOLING REQUIRED
97163R2
Fit a pipe onto outlet (A) long enough to empty
into a container outside the vehicle.
Note : the INTAIRCO pneumatic pump may also be
used (
see EQUIPMENT 95 catalogue) or piston
pump 333. Refer to your After Sales Head Office
for more details.
19-19
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FUEL TANK
Fuel tank
19
In the engine compartment, disconnect the fuel
pump relay (identifiable as it has larger section
wires , 5 mm
2 , on tracks 3 and 5) located in the
engine connection unit.
98756R1
DRAINING THE FUEL TANK (diesel version)
As there is no electric fuel pump, a pump must be
used to drain the fuel tank.
Use for example:
- the INTAIRCO pneumatic pump (see
EQUIPMENT 95 catalogue),
B - Fuel relay
Shunt tracks 3 and 5 and allow the fuel to run out
until it is only pumped out intermittently.
Disconnect the shunt.
Reconnect the relay.
Disconnect the battery.- piston pump 333. Refer to your After Sales
Head Office for more details.
76003S
99641S
19-20
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FUEL TANK
Fuel tank
19
REMOVING THE FUEL TANK (petrol or diesel ver-
sions)
Vehicle on a 2 post lift.
Disconnect the electrical connector (2) and the
quick release unions , Mot. 1265 or Mot. 1265-01
(see below for positioning the pliers).
97163R4
Remove the heat shields (3) and (4) and the strut
(5).
Lift the vehicle.
Remove the silencer, use the pipe cutting tool
Mot. 1199 (see Exhaust section).Measure dimension X before releasing the hand-
brake adjuster.
99090R
Slacken the adjuster to release the left and right
hand cables (release the plastic cable stop with
care).
99091R
19-21
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FUEL TANK
Fuel tank
19
Disconnect the pipes from the fuel tank filler neck
using tool Mot. 1265.
Fit a jack under the fuel tank.
Remove the 3 mounting bolts at the front of the
fuel tank.
Slacken the mounting bolts for the rear mounting
sufficiently to allow the fuel tank to be released.
IMPORTANT:
when removing the fuel tank, release the brake
pipes sufficiently to avoid deforming them.Mot. 1265 : 8 mm diameter pipe.
Mot. 1265-01 : 10 mm diameter pipe (diesel fuel
supply circuit).REFITTING
Refitting is the reverse of removal.
Take care not to compress the pipes (risk of a
leak).
Fit the quick release unions by hand and ensure
they click together correctly (two O rings ensure
sealing).
Take care to ensure the heat shields are correctly
refitted.
96420R2
99216S
19-22