(2)
On the panel 25VU make sure that the APU MASTER SW p/bsw 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).
Subtask 49-72-15-865-058
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
R EFF : 001-049, 101-105, 107-107, 151-199, 49-72-15Page 210 201-210, Config-2 Aug 01/05
CES Subtask 49-72-15-010-056
C. Get Access
(1)
Put the access platform in position below the APU access doors 315AL and 316AR.
(2)
Open the APU access doors 315AL and 316AR (Ref. TASK 52-41-00-010-001).
(3)
Set the LIGHT SW 11LJ to the ON position.
4. Procedure
_________
(Ref. Fig. 201/TASK 49-72-15-991-003) Subtask 49-72-15-420-052
A. Installation of the Thermocouples
(1)
Put the new gasket (2) in position on the thermocouple (3).
(2)
Remove the blanking plug from the thermocouple flange.
(3)
Put the thermocouple (3) into the APU.
(4)
Turn the thermocouple (3) to engage mounting plate on studs.
(5)
Apply a thin layer of COMMON GREASE (Material No. 04-014) to the threads of the studs.
(6)
Tighten the nuts (1) to secure the thermocouple in the APU.
(7)
TORQUE the nuts (1) to 40 lbf.in (0.45 m.daN).
(8)
Install the electrical connections (4) with the washers (5) and the nuts (6).
R EFF : 001-049, 101-105, 107-107, 151-199, 49-72-15Page 211 201-210, Config-2 Aug 01/05
CES Subtask 49-72-15-865-059
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------121VU APU/APU/CTL 2KD L42 121VU APU/ECB/SPLY 1KD L41
Subtask 49-72-15-710-053
C. Do the self test of the ECB (Ref. TASK 49-00-00-710-009).
5. Close-up
________ Subtask 49-72-15-410-053
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 and (Ref. TASK 52-41-00-410-001).
(3)
Remove the access platform(s). Subtask 49-72-15-860-063
B.
Aircraft Maintenance Configuration
(1)
Pressurize the reservoirs of the hydraulic systems.
(Ref. TASK 29-14-00-614-002).
(2)
De-energize the ground service network
(Ref. TASK 24-42-00-862-001).
(3)
Remove the warning notice(s).
R EFF : 001-049, 101-105, 107-107, 151-199, 49-72-15Page 212 201-210, Config-2 Aug 01/05
CES
THERMOCOUPLE ((APS 3200)) - MAINTENANCE PRACTICES
_________________________________________________ TASK 49-72-15-000-001 Removal of the Thermocouple (8057KM1) and (8057KM2) (APS 3200) 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
______________________
A. Fixtures, Tools, Test and Support Equipment
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