**ON A/C 001-049, 051-061, 101-105,
21-31-51-991-001 Fig. 401
**ON A/C 062-099,
21-31-51-991-001-C Fig. 401A
R **ON A/C 106-149, 151-199, 204-299, 301-399, 401-499,
21-31-51-991-001-B Fig. 401B
**ON A/C 201-203,
21-31-51-991-001-A Fig. 401C
**ON A/C ALL
3. Job Set-up__________
Subtask 21-31-51-860-055
A. Aircraft Maintenance Configuration
(1) Make sure that:
(a) The aircraft electrical circuits are energized (Ref. TASK 24-41-00-861-002).
(b) The access platform is in position below the outflow valve area in zone 172.
(c) The AFT cargo-compartment door 826 is open (Ref. TASK 52-30-00-860-001).
(d) The access platform is in position at the AFT cargo-compartment door 826.
(e) The access panel 162CW is removed (Ref. TASK 25-55-12-000-003).
Subtask 21-31-51-865-079
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
R -------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR COND/CAB/PRESS/CTL1 1HL D09
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
R 122VU AIR COND/AFT CARGO VENT/FAN 30HN S22
R **ON A/C ALL
R R R 122VU AIR COND/LAV/GALLEY VENT CTL/EXTRACT FAN/SPLY 122VU AIR COND/CAB PRESS/CTL/MAN 122VU AIR COND/CAB PRESS/CTL/2 6HU 3HL 2HL U19 Y23 Y22
4. Procedure
_________
**ON A/C 001-049, 051-061, 101-105,
(Ref. Fig. 401/TASK 21-31-51-991-001)
**ON A/C 062-099,
(Ref. Fig. 401A/TASK 21-31-51-991-001-C) R **ON A/C 106-149, 151-199, 204-299, 301-399, 401-499,
(Ref. Fig. 401B/TASK 21-31-51-991-001-B)
**ON A/C 201-203,
(Ref. Fig. 401C/TASK 21-31-51-991-001-A)
**ON A/C 001-049, 051-061, 101-105,
Subtask 21-31-51-420-050
A. Installation of the Outflow Valve WARNING : SUPPORT THE UNIT/ASSEMBLY OR IT WILL FALL AND BECOME DAMAGED OR
_______ INJURE PERSONNEL. THE UNIT/ASSEMBLY IS HEAVY.
NOTE : This paragraph is only applicable for outflow valves P/N
____ 9023-15703-81 and previous. Make sure that there is no blanking plug installed in the static port of the outflow valve electronic boxes.
(1)
Make sure that the parts retained from the removed component are clean and in the correct condition.
(2)
Clean the component interface and/or the adjacent area.
(3)
Make sure that the gasket (6) is in a good condition. If necessary replace the gasket (6).
(4)
Make sure that the joining faces of the outflow valve (5) and the aircraft structure are free from grease and sealants.
(5)
Put the gasket (6) in position on the outflow valve (5).
(6)
Carefully put the outflow valve (5) and the gasket (6) in position. NOTE : The outflow valve weighs approx. 12.5 kg (27.5577 lb).
____
NOTE : Make sure that the location pins (8) are in the correct
____
position in the outflow valve support-structure.
(7) From the outside of the aircraft install the outflow valve
attach-screws (7).
NOTE : Install the screws (7) as identified in the removal procedure.
____
(8)
TORQUE in sequence (refer to sequence chart) the screws (7) to
between 0.45 and 0.55 m.daN (39.82 and 48.67 lbf.in).
(9)
Use a feeler-gage and measure the gap between the support brackets
(25) and the attachment-lugs of the gearbox assembly.
(10) Use as necessary a mixture of washer NAS1149C0416R, washer NAS1149C0432R and washer NAS1149C0463R (24) to close the gap.
NOTE : The maximum gap limit is 0.00 +0.35 -0.35 mm (0.0000 +0.0137 -
____
0.0137 in.)
(11)
Install the bolts (22) and the washers (21) in the support brackets (25).
(12)
Tighten the bolts (22) (Ref. TASK 20-28-00-912-004).
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