Checking Vacuum System - Porsche 928 - WORKSHOP MANUAL 1977 Workshop Manual

Air Conditioner
CHECKING VACUUM SYSTEM
l.Connect
vacuum handpump to test
connection.
r-F F.-T
;~ i
I
I
2.Pump until vacuum is estab-
lished.
3.If no vacuum is created, use
fuel-line clamps, for example,
to close distribution manifold
lines one by one until leak is
located.
4.Eliminate any leaks found.
Printed in Germany - XIII, 1986 Checking Vacuum System
a7
- 105