(d)
Safety the union (3) and the union assy (5) together with MISCELLANEOUS (Material No. 19-010).
(6)
Attach the APU vent and drain valve (8) to the union assy (5).
(7)
TORQUE the nut (4) to between 5 and 5.5 m.daN (36.87 and 40.56 lbf.ft).
(8)
Safety the nut (4) and the two other nuts of the APU vent and drain valve (8) together with MISCELLANEOUS (Material No. 19-010).
(9)
Remove the blanking cap from the electrical connector.
(10)
Make sure that the electrical connectors are clean and in the correct condition.
(11)
Connect the electrical connector (2) to the APU fuel LP switch (1).
(12) Remove the container. **ON A/C ALL
Subtask 28-22-14-865-052
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1QC, 2QC, 3QC, 1KD, 2KD.
5. Close-up
________ Subtask 28-22-14-410-050
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Close the APU access doors 315AL, 316AR (Ref. TASK 52-41-00-410-001).
(3)
Remove the access platform(s).
(4)
Remove the warning notice(s).
1EFF : ALL 1 28-22-14Page 414 1 1 May 01/05 1 1 1CES 1
(5) Remove the ground support and maintenance equipment, the special and
standard tools and all other items.
1EFF : ALL 1 28-22-14Page 415 1 1 May 01/05 1 1 1CES 1 SWITCH - APU FUEL PRESSURE (7QC) - REMOVAL/INSTALLATION
_______________________________________________________
TASK 28-22-15-000-001
Removal of the APU Fuel Pressure Switch (7QC)
WARNING : OBEY THE FUEL SAFETY PROCEDURES.
_______
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------
REFERENCE QTY DESIGNATION
-------------------------------------------------------------------------------
No specific blanking caps No specific circuit breaker(s) safety clip(s) R No specific access platform 2.0 m (6 ft. 7 in.) R No specific 1 WARNING NOTICE
B. Referenced Information
-------------------------------------------------------------------------------
REFERENCE DESIGNATION
-------------------------------------------------------------------------------
28-00-00-910-001 Fuel Safety Procedures
32-12-00-010-001 Open the Main Gear Doors for Access
28-22-15-991-001 Fig. 401
3. Job Set-up
__________
Subtask 28-22-15-941-050
A. Aircraft Maintenance Configuration
(1)
When you do maintenance work on the fuel system you must obey the fuel safety procedures (Ref. TASK 28-00-00-910-001).
(2)
On the APU section of the overhead panel 25VU, make sure that the APU MASTER SW is in the off position (the ON legend is off).
1EFF : ALL 1 28-22-15Page 401 1 1 Aug 01/04 1 1 1CES 1
(3) On the FUEL overhead panel 40VU, make sure that all L TK PUMPS and R TK PUMPS pushbutton switches are released (the OFF legends are on).
R (4) Put the WARNING NOTICE in position: - on the overhead panel 25VU, to tell persons not to operate the APU MASTER SW, - on the FUEL panel 40VU, to tell persons not to operate the fuel system, - on the APU FIRE panel 20VU, to tell persons not to operate the fire extinguishing system.
Subtask 28-22-15-865-050
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU APU/FUEL/BLOW OFF/PUMP 2QC B14 121VU APU/FUEL/BLOW OFF/CTL 1QC K39 121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41 121VU APU/FUEL/PUMP/CTL 3QC M38
Subtask 28-22-15-010-050
C. Get Access
(1)
Open the LH MLG door. (Ref. TASK 32-12-00-010-001)
(2)
Put the access platform in position at the main landing-gear door.
4. Procedure
_________
(Ref. Fig. 401/TASK 28-22-15-991-001)
Subtask 28-22-15-020-051
A. Removal of the APU Fuel Pressure Switch (7QC)
(1)
Disconnect the electrical connector (2) from the APU fuel pressure switch (1).
(2)
Put blanking caps on the disconnected electrical connectors.
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