ITT INDICATORS − MAINTENANCE PRACTICES
1.
Removal/Installation
The maintenance procedures that follow are for the removal and installation of the ITT
indicators.
A.
Removal of the ITT Indicators
WARNING:
REMOVE ALL ELECTRICAL POWER FROM THE AIRCRAFT
BEFORE YOU DO MAINTENANCE. PUT WARNING PLACARD AT
THE EXTERNAL POWER RECEPTACLE AND IN FLIGHT
COMPARTMENT. THIS IS NECESSARY TO PREVENT
ELECTRICAL SHOCK TO PERSONS AND/OR DAMAGE TO THE
EQUIPMENT.
(1) Remove electrical power from aircraft.
(2) Open, safety clip and tag the circuit breakers that follow:
CIRCUIT BREAKER PANEL
CIRCUIT BREAKER NO.
NAME
LEFT DC
F5
ENG 1 ITT IND
LEFT DC
S2
IND LCD HTR
RIGHT DC
F5
ENG 2 ITT IND
RIGHT DC
A1
IND LCD HTR
RIGHT DC
R3
ENG INSTR
(3) Loosen the ITT indicator top right and lower left securing screws approximately five
turns.
(4) Push in the ITT indicator top right and lower left securing screws to disengage the
clamping mechanism.
(5) Slide out the ITT indicator.
(6) Disconnect the connector and remove the ITT indicator.
B.
Installation of the ITT Indicators
(1) Make sure the aircraft is in the removal configuration.
(2) Reconnect the connector to the ITT indicator.
(3) Insert and align the ITT indicator and tighten the securing screws.
(4) Remove the safety clips and tags and close the circuit breakers that follow:
CIRCUIT BREAKER PANEL
CIRCUIT BREAKER NO.
NAME
LEFT DC
F5
ENG 1 ITT IND
LEFT DC
S2
IND LCD HTR
RIGHT DC
F5
ENG 2 ITT IND
RIGHT DC
A1
IND LCD HTR
RIGHT DC
R3
ENG INSTR
(5) Remove all tools, equipment and unwanted materials from the work area.
D
SERIES 100
AIRCRAFT MAINTENANCE MANUAL
MASTER
EFFECTIVITY:
77−20−00
Page 201
Jun 20/2005