Propeller (Prop Rpm) Indicating System − Maintenance Practices; Circuit Breaker Panel - De Havilland DASH8 100 Series Maintenance Manual

**ON A/C ALL
PROPELLER (PROP RPM) INDICATING SYSTEM − MAINTENANCE PRACTICES
1. Removal/Installation
The following maintenance procedures are approved for the removal and the installation of
the propeller (PROP RPM) indicators.
A. Removal of the Propeller (PROP RPM) Indicator
WARNING:
(1) Remove electrical power from aircraft.
(2) Open, safety clip and tag the circuit breakers that follow:

CIRCUIT BREAKER PANEL

LEFT DC
LEFT DC
RIGHT DC
RIGHT DC
RIGHT DC
(3) Loosen the propeller (PROP RPM) indicator top right and lower left securing screws
approximately five turns.
(4) Push in the propeller (PROP RPM) indicator top right and lower left securing screws
to disengage the clamping mechanism.
(5) Slide out the propeller (PROP RPM) indicator.
(6) Disconnect the connector and remove the propeller (PROP RPM) indicator.
B. Installation of the Propeller (PROP RPM) Indicator
(1) Make sure the aircraft is in the removal configuration.
(2) Reconnect the connector to the propeller (PROP RPM) indicator.
(3) Insert and align the propeller (PROP RPM) indicator.
(4) Tighten the top right and lower left securing screws.
(5) Remove the safety clips and tags and close the circuit breakers that follow:
CIRCUIT BREAKER PANEL
LEFT DC
LEFT DC
RIGHT DC
RIGHT DC
RIGHT DC
MASTER
EFFECTIVITY: See Pageblock 61−44−00 page 201
D
S ERIES 100
AIRCRAFT MAINTENANCE MANUAL
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.
CIRCUIT BREAKER NO.
G5
S2
G5
A1
R3
CIRCUIT BREAKER NO.
G5
S2
G5
A1
R3
NAME
ENG 1 NP IND
IND LCD HTR
ENG 2 NP IND
IND LCD HTR
ENG INSTR
NAME
ENG 1 NP IND
IND LCD HTR
ENG 2 NP IND
IND LCD HTR
ENG INSTR
61−44−00
Page 201
Jun 20/2005