3. Job Set-up
__________
Subtask 78-31-51-941-064
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.
(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).
Subtask 78-31-51-010-076
B. Get Access
(1) Open the fan cowl doors (Ref. TASK 71-13-00-010-040): FOR 1000EM1 437AL, 438AR FOR 1000EM2 447AL, 448AR
(2) Put the access platform in position.
Subtask 78-31-51-040-066
C. Make the thrust reverser unserviceable (Ref. TASK 78-30-00-481-041).
Subtask 78-31-51-614-056 R D. Depressurize the aircraft hydraulic systems
(1) For engine 1 depressurize the Green hydraulic reservoir (Ref. TASK 29-14-00-614-001).
(2) For engine 2 depressurize the Yellow hydraulic reservoir (Ref. TASK 29-14-00-614-001).
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4. Procedure
_________
(Ref. Fig. 403/TASK 78-31-51-991-304)
Subtask 78-31-51-020-060
A. Removal of the Filter Clogging Indicator from the Hydraulic Control Unit (HCU) as follows:
R WARNING : DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:
_______ R - FLUSH IT AWAY WITH CLEAN WATER R - GET MEDICAL AID.
(1) Put a cloth on the engine below the HCU to protect it from any hydraulic fluid.
(2) Cut the lockwire and remove the retaining ring (185) and the glass bowl (190) from the clogging indicator (195).
(3) With the SOCKET (CH1540-0276) or SOCKET (M46104), remove clogging indicator (195) from the HCU (20).
(4) Remove and discard the packings (200) and (205) from the clogging indicator (195).
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R R Hydraulic Control Unit Filter Clogging Indicator Figure 403/TASK 78-31-51-991-304
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TASK 78-31-51-400-043 Installation of the Filter Clogging Indicator
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 1 m (3 ft. 3 in.) No specific Torque Wrench : range 36.00 to 220.00 lbf.in
(0.40 to 2.60 m.daN) CH1540-0276 1 SOCKET M46104 1 SOCKET
B. Consumable Materials
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
R R Material No. Material No. CP1039 CP1041
R R Material No. Material No. CP2011 CP2212
R R R R R R R R R R Material No. Material No. Material No. Material No. Material No. CP2559 CP2560 CP2566 CP2584 CP2656
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acetone (Ref. 70-30-00)
USA MIL-D-12491
isopropyl alcohol (Ref. 70-30-00)
*
stoddard solvent (Ref. 70-30-00)
*
thrust reverser hydraulic fluid (Ref. 70-30-00)
*
ardrox 552 (Ref. 70-30-00)
*
turco ind 79 (Ref. 70-30-00)
*
mag-chem teksol (Ref. 70-30-00)
*
degreasol 99 R (Ref. 70-30-00)
*
mag-chem skysol (Ref. 70-30-00)
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Material No. CP8001 *
lockwire (Ref. 70-30-00) Material No. CP8002 *
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