4. Procedure
_________
(Ref. Fig. 401/TASK 26-12-15-991-300) Subtask 26-12-15-020-050
A. Removal of the Fan Zone Fire Detector CAUTION : REMOVE THE FIRE DETECTORS AND THE RAIL AS ONE ASSEMBLY. THE
_______ FIRE DETECTOR SENSOR ELEMENTS CAN BE DAMAGED IF NOT SUPPORTED BY THE RAIL.
(1)
Turn the screw (30) on the center mount clamp (25), then move the clamps (25) out of the brackets (10) (8 locations). Use a phillips head screw driver to turn the screw.
(2)
Disconnect the electrical connector 4000WD1-A from the Loop A fire detector sensor (45).
(3)
Remove the nuts (5), bolts (15), and clamps (40) from the Loop A sensor (45).
(4)
Install the nuts (5), bolts (15), and clamps (40) on the engine bracket. Tighten the nut with your hand.
(5)
Disconnect the electrical connector 4000WD2-A from the Loop B fire detector sensor (45).
(6)
Remove the nuts (5), bolts (15), and clamps (40) from the Loop B sensor (45).
(7)
Install the nuts (5), bolts (15), and clamps (40) on the engine bracket. Tighten the nut with your hand.
(8)
Put protective covers on the sensors and the electrical connectors.
(9)
Remove the rail assembly (20) with the sensors (45) attached from the engine.
Fan Fire Detectors
Figure 401/TASK 26-12-15-991-300
1EFF : ALL 1 26-12-15 Page 404
1 1 Feb 01/98
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TASK 26-12-15-400-042 Installation of the Fan Fire Detectors (4000WD1,4000WD2) WARNING : BE CAREFUL WHEN YOU WORK ON THE ENGINE COMPONENTS IMMEDIATELY AFTER
_______ THE ENGINE IS SHUTDOWN. THE ENGINE COMPONENTS CAN STAY HOT FOR UP TO ONE HOUR.
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific cloth
No specific low voltage ohmmeter
No specific warning notice
No specific access platform 1 m (3 ft. 3 in.)
R No specific Torque Wrench : range 5.00 to 35.00 lbf.in
R (0.05 to 0.40 m.daN)
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
Material No. CP1008 *
1,1,1 trichloroethylene (Ref. 70-30-00)
C. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
24-42-00-861-001 Energize the Ground Service Network from the External Power 24-42-00-862-001 De-energize the Ground Service Network Supplied from the External Power
R 26-12-00-710-001 Operational Check of Loop/Squib 31-60-00-860-001 EIS Start Procedure 31-60-00-860-002 EIS Stop Procedure 71-13-00-010-040 Opening of the Fan Cowl Doors 71-13-00-410-040 Closing of the Fan Cowl Doors 26-12-15-991-300 Fig. 401
3. Job Set-up
__________
Subtask 26-12-15-860-056
A. Aircraft Maintenance Configuration
(1)
Make sure that the ground service network is energized (Ref. TASK 24-42-00-861-001).
(2)
On the center pedestal, on the ENG panel 115VU, make sure that a warning notice is in position to tell persons not to start the engine.
(3)
On the overhead maintenance panel 50VU, make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off. Make sure that a warning notice is in position to tell persons not to energize the FADEC 1(2).
(4)
Make sure that the access platform is in position.
Subtask 26-12-15-010-056
B. Make sure that the fan cowl doors are open (Ref. TASK 71-13-00-010-040): FOR 1000EM1 437AL, 438AR FOR 1000EM2 447AL, 448AR
Subtask 26-12-15-865-051
C. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU ENGINE/2/FIRE DET/LOOP B 8WD2 A07 49VU ENGINE/1/FIRE DET/LOOP A 7WD1 A06 121VU ENGINE/ENG2/FIRE DET/LOOP A 7WD2 Q39 121VU ENGINE/ENG1/FIRE DET/LOOP B 8WD1 Q38
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