Piper Lance II - Page 391

LANCE II SERVICE MANUAL
TABLE X-I. VACUUM SYSTEM (cont)
Cause
Trouble
Remedy
Low
vacuum
system
pressure.
Filter
dirty.
Replace
filter.
Vacuum
regulator
valve
incorrectly
adjusted.
Line
from
gyros
to
filter
restricted.
Line
from pump
to gyros
leaking.
Adjust
regulator
valve
in
accordance
with
Adjustments
in
this
section.
Repair line.
Check
all lines
and
fittings.
Normal
pressure
indica-
tion
but sluggish
oper-
ation of
instruments.
Faulty
instrument.
Replace
instrument.
Issued:
1/3/78
INSTRUMENTS
2E7