B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the
External Power 25-54-12-000-001 Removal of the FWD Cargo Compartment Partition FR34 52-30-00-860-001 Open the FWD or AFT Cargo-Compartment Door with the
Yellow Electric Pump 21-51-52-991-001 Fig. 401
3. Job Set-up
__________ Subtask 21-51-52-861-051
A. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
Subtask 21-51-52-865-050
B. Open, safety and tag this(these) circuit breaker(s):
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PANEL DESIGNATION IDENT. LOCATION
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R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
122VU AIR COND/FLOW/MIXER/FLAP 3HB V22 122VU AIR COND/ZONE TEMP CTL/28VDC/SYS2 4HK V20 122VU AIR COND/ZONE TEMP CTL/28VDC/SYS1 3HK V19 122VU AIR COND/ZONE TEMP CTL/115VAC/SYS2 2HK V18 122VU AIR COND/ZONE TEMP CTL/115VAC/SYS1 1HK V17
**ON A/C ALL
122VU AIR COND/RECIRC FAN/R/CTL 11HG W20 122VU AIR COND/RECIRC FAN/R/SPLY 3HG W18 122VU AIR COND/RECIRC FAN/L/CTL 2HG X20 122VU AIR COND/RECIRC FAN/L/SPLY 1HG X18
Subtask 21-51-52-941-051
C. Safety Precautions
(1)
On the panel 30VU:
(a)
Make sure that:
-
the APU BLEED pushbutton switch is in the off position (the ON legend is off) and,
-
the ENG 1 BLEED and the ENG 2 BLEED pushbutton switches are in the off position (the OFF legends are on).
(b)
Put a warning notice in position to tell persons not to operate these pushbutton switches.
(2)
On the HP and the LP ground connectors:
(a) Put a warning notice in position to tell persons not to supply the ground air.
Subtask 21-51-52-010-050
D. Get Access
(1)
Put the access platform in position at the FWD cargo-compartment door
825.
(2)
Open the FWD cargo-compartment door 825 (Ref. TASK 52-30-00-860-001).
(3)
Remove the access panels 132PW and 131NW (Ref. TASK 25-54-12-000-001).
4. Procedure
_________
(Ref. Fig. 401/TASK 21-51-52-991-001) Subtask 21-51-52-020-050
A. Removal of the Mixer Flap Actuator
(1)
Disconnect the electrical connector (3).
(2)
Put blanking caps on the disconnected electrical connectors.
(3)
Loosen the clamp (8) and disconnect the sleeve (7).
(4)
Remove the nuts (13), the washers (12) and the bolts (10).
(5)
Carefully remove the mixer-flap actuator housing (9) and the seal (11).
(6)
Remove the bolts (4), the washers (5) and the mixer flap actuator (6).
(7)
Put protective covers on the open ends of the sleeve (7), the mixer unit (14) and the mixer-flap actuator housing (9).
1EFF : ALL 1 21-51-52Page 403 1 1 Feb 01/05R 1 1 1CES 1
Mixer Unit-Flap Actuator 20HB.
Figure 401/TASK 21-51-52-991-001
1EFF : ALL 1 21-51-52 Page 404
1 1 Feb 01/98
1 1
1CES 1
TASK 21-51-52-400-001 Installation of the Mixer Flap Actuator 20HB WARNING : MAKE SURE THAT AIR IS NOT SUPPLIED TO THE AIR CONDITIONING SYSTEM
_______
FROM THE MAIN ENGINE, THE APU OR A GROUND SOURCE.
HOT COMPRESSED AIR CAN CAUSE INJURY TO PERSONNEL.
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
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REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific access platform 2 m (6 ft. 7 in.)
B. Consumable Materials
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REFERENCE DESIGNATION
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