(3) Blow clean dry air into the PS12 connection to ECU to remove any dirt or water accumulation. Blocked hose is not serviceable. If necessary, replace the hose (Ref. TASK 72-23-00-000-040) and (Ref. TASK 72-23-00-400-040).
(4) Check the ECU nipple for dirt. If necessary, remove the dirt with plastic wire. Take care to not introduce dirt inside the ECU.
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(5) Check the fan frame bosses for dirt. If necessary, remove the dirt with stoddart solvent and a plastic wire. Blow clean dry air into the fan frame bosses nipples.
(6) Lubricate the ECU and the fan frame bosses nipples with engine fuel.
(7) Connect the PS12 line to the ECU and to the fan frame bosses.
(8) TORQUE the PS12 connections to between 135 and 150 lbf.in (1.52 and
1.69 m.daN).
(9) Safety with lockwire 0.032 in. (0.8 mm) dia. (Material No. CP8001) or lockwire 0.032 in. (0.8 mm) dia. (Material No. CP8002).
5. Close-up
________ Subtask 72-23-00-410-098
A. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
(2) Close the fan cowl doors: (Ref. TASK 71-13-00-410-040)
FOR 1000EM1
437AL, 438AR
FOR 1000EM2
447AL, 448AR
(3) Remove the access platform(s).
(4) Remove the warning notice(s).
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TASK 72-23-00-280-005
Inspection of Forward Acoustical Panels
1. Reason for the Job
__________________
Self Explanatory
2. Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific warning notice
No specific access platform 0.5 m (1 ft. 8 in.)
B. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
72-23-00-000-009 Removal of the Forward Acoustical Panels of the Fan 72-23-00-300-044 Repair of Forward, Mid and Aft Acoustical Panels when Missing Cup 72-23-00-400-009 Installation of the Forward Acoustical Panels of the Fan 72-23-00-400-044 Installation of Acoustical Panels Attachment Screw Locking R 72-23-00-991-311 Fig. 609
3. Job Set-up
__________
Subtask 72-23-00-941-090
A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a warning notice to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
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(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a warning notice to tell persons not to energize the FADEC 1(2).
(4) Put a warning notice to tell persons not to start the engine 1(2).
(5) Put an access platform in position at the front of the engine.
4. Procedure
_________
R (Ref. Fig. 609/TASK 72-23-00-991-311)
Subtask 72-23-00-350-058
A. Inspection of FWD Acoustical Panels
-------------------------------------------------------------------------------INSPECT/CHECK MAXIMUM REMARKS SERVICEABLE LIMITS -------------------------------------------------------------------------------
1. FWD acoustical panels
A. Dents, marks, No limits
indentations
caused by screw
head.
B. Pierced cups Not serviceable Install the panel caused by screw (Ref. TASK 72-23-00-400-head. 044)
C. Unbonded cups. Not serviceable Repair the panel (Ref. TASK 72-23-00-300-044) and re-install the panel immediately (Ref. TASK 72-23-00-400-009).
D. Missing cups. Not serviceable Replace the panel (Ref. TASK 72-23-00-000-009) and (Ref. TASK 72-23-00-400-009).
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