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REFERENCE DESIGNATION
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21-51-00-710-002 Operational Test of the Flow Control and Indicating System 24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 24-41-00-862-002 De-energize the Aircraft Electrical Circuits Supplied
from the External Power 25-54-12-000-001 Removal of the FWD Cargo Compartment Partition FR34 25-54-12-400-001 Installation 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 52-30-00-860-002 Close the FWD or AFT Cargo-Compartment Door with the Yellow Electric Pump 21-51-52-991-001 Fig. 401
3. Job Set-up
__________
Subtask 21-51-52-860-050
A. Aircraft Maintenance Configuration
(1) Make sure that:
(a)
The aircraft electrical circuits are energized (Ref. TASK 24-41-00-861-002).
(b)
On the panel 30VU:
1 The APU BLEED pushbutton switch is in the off position (the ON
_
legend is off).
2 The ENG 1 BLEED and the ENG 2 BLEED pushbutton switches are in
_ the off position (the OFF legends are on).
3 The warning notice is in position to tell persons not to
_ operate these pushbutton switches.
(c)
On the HP and the LP ground connectors the warning notice is in position to tell persons not to supply the ground air.
(d)
The access platform is in position at the FWD cargo compartment door 825.
(e)
The FWD cargo compartment door 825 is open (Ref. TASK 52-30-00-860-001).
(f)
The access panels 132PW and 131NW are removed (Ref. TASK 25-54-12-000-001).
Subtask 21-51-52-865-051
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
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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
4. Procedure
_________
(Ref. Fig. 401/TASK 21-51-52-991-001) Subtask 21-51-52-420-050
A. Installation of the Mixer Flap Actuator
(1)
Make sure that the parts retained from the removed component are clean and in the correct condition.
(2)
Remove the protective covers from the sleeve (7), the mixer unit (14) and the mixer-flap actuator housing (9).
(3)
Clean the component interface and/or the adjacent area.
(4)
Make sure that the seal (11) is in a good condition. If necessary replace the seal (11).
(5)
Apply a small quantity of COMMON GREASE (Material No. 04-004A) to the geared part of the shaft (15).
(6)
Put the mixer flap actuator (6) in position on the shaft (15). NOTE : The valve shutter (2) and the actuator manual-operating arm
____ (1) must both be in the center position.
(7)
Install the bolts (4) and the washers (5). NOTE : Make sure that the valve shutter (2) and the actuator
____ manual-operating arm (1) are in the center position.
(8)
Put the seal (11) and the mixer-flap actuator housing (9) in position on the mixer unit (14).
(9)
Install the bolts (10), the washers (12) and the nuts (13). NOTE : Do not overtighten the nuts (13) and the bolts (10) as this
____
can cause damage to the seal (11).
(10) Put the clamp (8) and the sleeve (7) in position on the mixer-flap actuator housing (9).
NOTE : Make sure that the end of the sleeve (7) is between the
____ coloured marking lines on the mixer-flap actuator housing (9).
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