Porsche 928 Workshop Manual page 463

9 2s Fxhaust System
26
REPLACING; FILTtR FLF\lI NT Ok AlR PUMP
Filter housing is mounted on wheel housing in
front righthand side of engine compartment.
Loosen winged nut, remove filter cover and take
out filter element.
CHECKING TIGHTNESS OF EXHAUST FLANGES
1. Check bolts between exhaust manifold pipes
and catalytic converter.
2. Check bolts at intermediate muffler outlet.
3. Check bolts at main muffler inlet.
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Tightening torque for bolts and nuts:
M8
2.0 + 0.2 mkg (14 + 1.4 ft lb)
M 10
4.0+0.5mkg(29+3.6ftlb)
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Printed in Germany
Replacing Filter Element of Air Pump 26 - 1
Checking Tightness of Exhaust Flanges