3. Job Set-up
__________
Subtask 36-22-18-860-051
A. Aircraft Maintenance Configuration
(1) Make sure that the warning notice is in position:
-
in the cockpit on the Engine Control Panel 115VU to tell persons not to start the engine(s),
-
in the cockpit on the AIR COND Overhead Control Panel 30VU to tell persons not to push in the APU BLEED pushbutton switch,
- on the HP ground connector to tell persons not to pressurize the pneumatic system.
(2)
Make sure that the adjustable access platform up to 2.5 m (8 ft. 2 in.) is in position below the related access panels.
(3)
Make sure that the related access panels are open:
(a)
For access to the overheat sensing-elements between FR35 and FR36:
-the access panels 191BB and 191EB.
(b)
For access to the overheat sensing-elements between FR36 and FR42 LH:
-the access panel 191JB.
(c)
For access to the overheat sensing-elements between FR34 and FR42 RH:
-the access panels 192EB, 192FB, 192KB and 196AB.
(d)
For access to the overheat sensing-elements between FR42 and FR50:
-the access panels 147AB, 147EB, 147FB and 197BB.
Subtask 36-22-18-865-051
B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------49VU AIR BLEED/X FEED/VALVE/BAT 2HV D13 49VU AIR BLEED/ENG 1/CTL 3HA1 D12 49VU AIR BLEED/ENG 1/MONG 2HA1 D11 122VU AIR BLEED/ENG 2/CTL 3HA2 Z23 122VU AIR BLEED/ENG 2/MONG 2HA2 Z22 122VU AIR BLEED/X FEED VALVE/NORM 1HV Z20
4. Procedure_________
(Ref. Fig. 401/TASK 36-22-18-991-001)
Subtask 36-22-18-210-050
A. Inspection before Installation
(1) Clean the component interface and/or the adjacent area.
(2) Check that the sensing element is not damaged (flat or nicked).
(3) Check the threaded section of the connector and the socket for the correct condition. Make sure that the center pin of the connector is free of corrosion and distortion.
(4) Check the clamp for the correct condition. Make sure that it is correctly attached to the structure and can be correctly locked.
R (5) Inspect the spacers for damage.
R R R R (6) For the overheat sensing elements 33HF/60HF between the FR39 and FR40: - Make sure that the material of the spacer is teflon. If it is an aluminum spacer, install a teflon spacer.
R (7) Install the retained grommet on the sensing element.
Subtask 36-22-18-420-051
B. Installation of the Overheat Sensing Elements CAUTION : REMOVE OR INSTALL THE SENSING ELEMENTS CAREFULLY. DO NOT TWIST,
_______
BEND OR CAUSE KINKS IN THE SENSING ELEMENTS.
NOTE : The installation procedure for all sensing elements of the leak
____ detection system (double loop 125 degree C) is the same.
(1)
Put the sensing element in the correct position to the given routing.
(2)
Put the grommet (8) in the clamp position on the sensing element.
(3)
Install the sensing element with the attached grommet (8) to the clamp (7).
NOTE : The slot of the grommet must be on the opposite to the camloc
____
of the clamp.
(4)
Close the clamp (7) and tighten the camloc (6).
(5)
Remove the blanking cap from the electrical connector and the socket (4).
(6)
Install the socket (4) of the sensing element to the bracket (5).
(7)
Install the retained washer (3) and retaining nut (2) and TORQUE it to between 0.58 and 0.69 m.daN (51.32 and 61.06 lbf.in).
(8)
Install the union nut (1) to the socket (4) and TORQUE it to between
0.58 and 0.69 m.daN (51.32 and 61.06 lbf.in).
(9)
Safety the socket (4), the retaining nut (2) and the union nut (1) with lockwire, corrosion-resistant steel dia 0.63 mm (0.0248 in.).
Subtask 36-22-18-865-052
C. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 1HV, 2HV, 2HA1, 2HA2, 3HA1, 3HA2
Subtask 36-22-18-710-050
D. Do the operational test of the overheat detection system (Ref. TASK 36-22-00-710-001) .
1EFF : ALL 1 36-22-18Page 408 1 1 Nov 01/99R 1 1 1CES 1
5. Close-up
________ Subtask 36-22-18-410-050
A. Close Access
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