Porsche 928 Workshop Manual page 469

928
Exhaust System
26
No. Description Qty. Note When:
Special
Removing Installing
Instructions
1
Intermediate
1
muffler
2
Final muffler
1
PROCEDURES
Replacing Intermediate
Muffler and Final Muffler
Together
1. Remove final muffler with intermediate
muffler, heating front connecting pipe
with a welder if necessary.
2. Mark off distance of
about
10 mm on end
of final muffler pipe to have minimum
insertion depth of 10 mm.
Install final and intermediate mufflers,
and align to remove stress. Tack weld
connecting pipe at several points to hold
in installed position.
Replacing Final Muffler
1. Remove final muffler with intermediate
muffler, heating front connecting pipe
with a welder if necessary.
2. Cut through center of welding seam
between final muffler and intermediate
muffler with a saw or similar tool.
---A..,
I
1 \<
~./--------- --
3. Remove assembly and weld connecting
oioe as well as intermediate muffler
I
sleeve all around. Inert gas welding should
be preferred.
3. Remove remaining pieces of pipe from
the intermediate muffler, grinding and/or
filing off mating surfaces until pieces of
pipe can be removed. Then remove rest
of welding seam on inside.
Printed in Germany VIII, 1984 Replacing Intermediate and Final Mufflers
26 9
Together - Replacing Final Muffler