Cessna T188C - Description; Trouble Shooting; Cylinder Head Temperature Gage

MODEL
188
&
T188
SERIES
SERVICE
MANUAL
15-24.
TROUBLE
SHOOTING
(Cont).
TROUBLE
PROBABLE
CAUSE
REMEDY
IMPROPER
CALIBRATION.
Faulty
mechanism.
Replace
instrument.
NO
POINTER
MOVEMENT.
Faulty
mechanism.
Replace
nstrument.
Broken
pressure
line.
Repair
or
replace
damaged
line.
15-25.
CYLINDER
HEAD
TEMPERATURE
GAGE.
NOTE
15-26.
DESCRPTION.
The
temperature
bulb
reg-
A Cylinder
Head
Temperature
Gage
Calibr-
ulates
electrical
power
through
the cylinder
head
tion
Unit,
(SK182-43)
is
available
and
may be
temperature
gage.
The
gage
and
bulb
require
little
ordered
through
the
Cessna
Supply
Division.
or no
maintenance
other
than
cleaning,
making
sure
lead
is
properly
supported
and
all
connections
are
clean,
tight
and
properly
insulated.
15-27.
TROUBLE
SHOOTING.
TROUBLE
PROBABLE
CAUSE
REMEDY
GAGE
INOPERATIVE.
No current
to circuit.
Repair
electrical
circuit.
Defective
gage,
bulb or
Repair
or replace
defective
circuit.
items.
GAGE
FLUCTUATES
Loose
or
broken
wire
per-
Repair
or
replace
defective
RAPIDLY.
mitting alternate
make
and
wire.
break
of
gage
circuit.
GAGE
READS
TOO HIGH
High
voltage.
Check "A"
terminal.
ON
SCALE.
Gage
off
calibration.
Replace
gage.
GAGE READS
TOO
LOW
Low voltage.
Check voltage
supply
and
ON SCALE.
"D"
terminal.
Gage
off
calibration.
Replace
gage.
GAGE READS
OFF
SCALE
Break
in bulb.
Replace
bulb.
AT
HIGH
END.
Break
in bulb
lead.
Replace
bulb.
Internal
break
in
gage.
Replace
gage.
OBVIOUSLY
INCORRECT
Defective
gage
Deme
Replace
gage.
READING.
Incorrect calibration.
Calibrate
system.
Revision
1
15-9