Mooney M20B - Page 87

C~L
i;
INSTRUMENT
TROUBLESHOOTING
(Continued)
RATE
OF
CLIMB INDICATOR
Pointer
does
not
set
on
Aging
of
diaphragm.
Reset
pointer
to
zero
by
means
of
zero.
setting
knob.
Tap
instrument
while
resetting.
Pointer´• fails
"o
resE~nd.
Obstruction in
static
line.
Disconnect all
instruments
connected
to
stalic
line
Check individual
in-
st~uments
for
obstructions
in
lines.
Pointer
oscillates.
Leaks
in
static
line.
Disconnect
all
instruments connected
to
the
static
line. Check individua~
instruments for
leaks. Reconnect
in-
struments to
static
line
and
test
instal-
lation
for
leaks.
Defective
mechanism
Replace
instrument.
MANIFOLD
PRESSURE
INDICATOR
Excessive
error
at
e~tisting
Pointer
shifted.
I
Replace
instrument.
barometric
pressure.
Excessive
error
when
Line
leaking.
I
Tighten
line
connections.
engine
is
Sluggish~orr;
jerky
pointer
Improper
damping
Adj~ist damping
screw.
movement.
adjustment.
~Broken.or loose
cover
Vibration
or
excessive
Replace
glass
and
reseat
case.
glass
pressure.
Dull
or
discolored
I
Age.
Replace
instrument.
luminous
markings.
Incorrect
reading.
Moisture
or
oil in
line.
Disconnect
lines
and
blow´•out.
ENGINE
TEMPERATURE
GAGE
Instrument fails
to
show
Broken
or
damaged
Check
engine
unit
and
wiring
to
any
reading.
I cappilary.
Wiring
open.
instrument.
Excessive
scale
error.
Improper
calibration
Repair or
replace.
’adjustment
Pointer fails
to
move
as
Broken
or
dama~ged
eapil-
Checlt
engine
unit
and
~inng.
engine
is
warmed
up.
lary
or
open
wiring.
Dull
or
discolored
Age.
I
-ReIjlace
instnunent.
luminous
marking.
OLDWILLWAYNE