(2)
On the panel 25VU, make sure that the APU MASTER SW pushbutton switch is off.
(3)
Make sure that there is a warning notice in the cockpit to tell persons not to start the APU.
(4)
Make sure that hydraulic systems are depressurized
(Ref. TASK 29-00-00-864-001).
(5)
Make sure that the access platform is in position below the APU compartment.
(6)
Make sure that the APU access doors are open (Ref. TASK 52-41-00-010-001).
(7)
Make sure that the LIGHT control switch 11LJ is set to the on position.
Subtask 49-51-42-865-059
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41
4. Procedure
_________
(Ref. Fig. 401/TASK 49-51-42-991-003) Subtask 49-51-42-420-051
A. Installation CAUTION : DO NOT TORQUE THE V-CLAMP(S) TO MORE THAN THE SPECIFIED VALUE.
_______
YOU CAN DAMAGE THE FLANGE SURFACES IF YOU DO.
(1)
If it is required to install a new sleeve:
(a)
Remove the band clamp (3), move the sleeve (2) from the duct (4).
(b)
Move the new sleeve (2) onto the duct (4) and safety it with the band clamp (3).
(c)
TORQUE the band clamp (3) to between 15 and 21 lbf.in (0.16 and
0.23 m.daN).
(2)
Remove the protective covers from the exhaust duct and the bleed control valve (BCV).
(3)
Lubricate the new packing (7) with COMMON GREASE (Material No. 04-012).
(4)
Install the packing (7) on the air by-pass duct (4).
(5)
Position the air by-pass duct (4) between the BCV and the exhaust duct.
(6)
Safety the duct (4) with the V-band clamp (8) to the BCV, and with the band clamp (1) to the exhaust duct.
(7)
TORQUE the V-band clamp (8) to 40 lbf.in (0.45 m.daN).
(8)
TORQUE the band clamp (1) to between 15 and 21 lbf.in (0.16 and 0.23 m.daN).
(9)
Safety the tube clip to the duct (4) bracket with the bolt (5).
(10)
TORQUE the bolt (5) to 40 lbf.in (0.45 m.daN). Subtask 49-51-42-865-060
B.
Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1KD, 2KD
Subtask 49-51-42-710-052
C. Test
(1) Do the operational test of the APU (Ref. TASK 49-00-00-710-008).
(a) Operate the APU for min. five minutes and examine the joints of the air by-pass duct for leaks (Ref. TASK 49-00-00-790-005).
NOTE : Leaks are not permitted.
____
________
5. Close-up
Subtask 49-51-42-410-055
A. Close Access
(1)
Make sure that the work area is clean and clear of tool(s) and other items.
(2)
Set the LIGHT control switch 11LJ to the off position.
(3)
Close the APU access doors 315AL, 316AR (Ref. TASK 52-41-00-410-001).
(4)
Remove the access platform(s).
(5)
Remove the warning notice(s). Subtask 49-51-42-860-052
B.
Aircraft Maintenance Configuration
(1) De-energize the aircraft electrical circuits
(Ref. TASK 24-41-00-862-002).
VALVE - LOAD CONTROL - REMOVAL/INSTALLATION
___________________________________________ R **ON A/C 001-003, 051-099, 401-499,
TASK 49-51-51-000-001 Removal of the Bleed Load Control-Valve (8050KM) (GTCP 36-300) WARNING : DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS
_______
WHEN YOU DO THE MAINTENANCE TASK(S).
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
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