-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
**ON A/C 001-049, 051-099, 101-149, 201-299, 301-399,
21-28-00-991-002 Fig. 401 R **ON A/C 151-199, 401-499,
21-28-00-991-002-A Fig. 401A
**ON A/C ALL
3. Job Set-up
__________
Subtask 21-28-00-861-059
A. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002). **ON A/C 001-049, 051-099, 101-149, 201-299, 301-399,
Subtask 21-28-00-010-069
B. Get Access
(1)
Open the AFT cargo-compartment door 826 (Ref. TASK 52-30-00-860-001).
(2)
Put the access platform at the AFT cargo-compartment door 826.
(3)
Remove the access panel (Ref. TASK 25-55-12-000-001):
(a) FOR 33HN
-162DW.
(4)
Remove the access panel (Ref. TASK 25-55-11-000-003):
(a) FOR 34HN
-151EW.
(2)
Make sure that the electrical connectors are clean and in the correct condition.
(3)
Remove the temporary attachments and connect the electrical connectors (3), (33HN-A and 34HN-A).
(4)
Make sure that the work area is clean and clear of tool(s) and other items.
R **ON A/C 151-199, 401-499,
Subtask 21-28-00-010-069-A
B. Get Access
R (1) Open the AFT cargo-compartment door 826 (Ref. TASK 52-30-00-860-001). (2) Put the access platform at the AFT cargo-compartment door 826. (3) Remove the access panel (Ref. TASK 25-55-12-000-001): (a) FOR 33HN - 162DW.
R (4) Remove the access panel (Ref. TASK 25-55-11-000-003): (a) FOR 34HN - 151VW.
**ON A/C ALL
4. Procedure_________ Subtask 21-28-00-440-051
A. Reactivation of the AFT cargo-Compartment Ventilation Isolation-Valves **ON A/C 001-049, 051-099, 101-149, 201-299, 301-399,
R (Ref. Fig. 401/TASK 21-28-00-991-002) **ON A/C 151-199, 401-499,
(Ref. Fig. 401A/TASK 21-28-00-991-002-A) **ON A/C ALL
(1) Remove the blanking plugs from the disconnected electrical connectors.
Subtask 21-28-00-865-061
B. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------
PANEL DESIGNATION IDENT. LOCATION
-------------------------------------------------------------------------------
R **ON A/C 001-049, 051-099, 101-149, 151-199, 201-299, 301-399,
122VU AIR COND/AFT CARGO VENT/FAN 30HN S22 R **ON A/C ALL
Subtask 21-28-00-865-079
C. Make sure that this(these) circuit breaker(s) is(are) closed:
-------------------------------------------------------------------------------
PANEL DESIGNATION FIN LOCATION
-------------------------------------------------------------------------------
122VU AIR COND/AFT CARGO VENT/CTL AND/MONG 31HN 20 S
or alternative location :-
49VU AIR COND/AFT CARGO/VENT/CTL & MONG 31HN 07 C
Subtask 21-28-00-810-053
D. Do the trouble shooting of the isolation valve 33HN (34HN) (Ref. TSM ATA 21) and do the applicable corrective maintenance procedure(s).
Subtask 21-28-00-710-064
E. Do the operational test of the AFT cargo-compartment ventilation-system (Ref. TASK 21-28-00-710-006).
5. Close-up
________
**ON A/C 001-049, 051-099, 101-149, 201-299, 301-399,
Subtask 21-28-00-410-070
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Install the access panel (Ref. TASK 25-55-12-400-001):
(a) FOR 33HN
-162DW.
(3)
Install the access panel (Ref. TASK 25-55-11-400-003):
(a) FOR 34HN
-151EW.
(4)
Remove the access platform(s).
(5)
Close the AFT cargo-compartment door 826 (Ref. TASK 52-30-00-860-002).
R **ON A/C 151-199, 401-499,
Subtask 21-28-00-410-070-A
A. Close Access
(1) Make sure that the work area is clean and clear of tool(s) and other items.
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