Discovery II
MANIFOLDS AND EXHAUST SYSTEMS - V8
30-2-8
REPAIRS
5. Remove 2 nuts securing front pipe to
intermediate pipe/silencer.
6. Remove 6 nuts securing front pipe to exhaust
manifolds.
7. Release front pipe and collect front pipe to
manifold gaskets.
8. With assistance remove front pipe.
9. Remove HO2S from front pipe.
Refit
1. If refitting existing HO2S, apply anti-seize
compound to HO2S threads.
NOTE: A new HO2 sensor is supplied pre-
treated with anti-seize compound.
2. Fit HO2S to front pipe and tighten to 45 Nm (33
lbf.ft).
3. Clean front pipe and mating faces.
4. Position front pipe, with new front pipe to
manifold gaskets, and align front pipe with
intermediate pipe/silencer and exhaust
manifolds.
5. Fit and tighten exhaust manifold nuts to 30 Nm
(22 lbf.ft).
6. Fit and tighten intermediate pipe/silencer nuts
to 25 Nm (18 lbf.ft).
7. Fit chassis cross member and tighten bolts to
25 Nm (18 lbf. ft).
8. Connect HO2S multiplugs and secure to
support brackets.
Intermediate pipe/silencer
$% 30.10.11
Remove
1. Raise vehicle on ramp.
2. Remove 2 nuts securing intermediate pipe/
silencer to front pipe.
3. Remove 3 nuts securing intermediate pipe/
silencer to tail pipe.
4. Release intermediate pipe/silencer from
mountings and remove intermediate pipe/
silencer.
5. Collect intermediate pipe/silencer to tail pipe
gasket.
Refit
1. Clean intermediate pipe/silencer, front pipe and
tail pipe mating faces.
2. Position intermediate pipe/silencer and locate
on mountings.
3. Using a new intermediate pipe/silencer to tail
pipe gasket, align intermediate pipe/silencer
with tail pipe and front pipe.
4. Fit nuts to intermediate pipe/silencer and
tighten to 25 Nm (18 lbf.ft).
