(7)
Push the sensor (5) in a forward direction until a stop is made between the sensor flange (4) and the sensor mount (13).
(8)
Insert the washers (2) and the screws (1).
(9)
TORQUE the screws (1) to between 0.32 and 0.38 m.daN (28.31 and 33.62 lbf.in)
NOTE : Make sure that there is no gap between the sensor flange (4)
____
and the sensor mount (13)
(10) Pre-bend the single leg of the new tab-washers (8) 23350CA040 as shown in the figure.
NOTE : This will assist in the installation and safety procedure of
____
the tab-washers.
(11)
Put the clamp (9) in position and install the tab-washers (8) and the screws (7).
(12)
TORQUE the screws (7) to between 0.09 and 0.11 m.daN (7.96 and 9.73 lbf.in).
(13) Bend the two legs of the tab-washers (8) to secure the screws (7). Subtask 21-51-11-865-055
B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s): 49HH, 50HH, 51HH, 52HH, 53HH, 54HH, 55HH, 56HH.
Subtask 21-51-11-710-051
C. Test
(1)
Do the pre-conditioning through the HP ground connector (Ref. TASK 12-33-21-618-001) or with the APU (Ref. TASK 12-33-21-618-001).
(2)
Do a leak check at the sensor flange (4) and the sensor mount (13). NOTE : Leaks are not permitted.
____
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(3)
After approx. 15 minutes stop the pre-conditioning (Ref. TASK 12-33-21-618-001) or (Ref. TASK 12-33-21-618-001).
(4)
Do the operational test of the flow control and indicating system (Ref. TASK 21-51-00-710-002).
5. Close-up
________ Subtask 21-51-11-410-052
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 53-35-13-400-002):
FOR 23HB2
191BB,
FOR 24HB2
192FB.
Subtask 21-51-11-862-051
B. De-energize the aircraft electrical circuits (Ref. TASK 24-41-00-862-002).
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SENSOR - PACK INLET PRESSURE (23HB1,24HB1) - REMOVAL/INSTALLATION
_________________________________________________________________ TASK 21-51-13-000-001 Removal of the Pack-Inlet Pressure Sensor 23HB1 (24HB1)
1.
Reason for the Job
__________________
Self Explanatory
2.
Job Set-up Information
______________________
A. Fixtures, Tools, Test and Support Equipment
-------------------------------------------------------------------------------REFERENCE QTY DESIGNATION -------------------------------------------------------------------------------
No specific circuit breaker(s) safety clip(s)
B. Referenced Information
-------------------------------------------------------------------------------REFERENCE DESIGNATION -------------------------------------------------------------------------------
24-41-00-861-002 Energize the Aircraft Electrical Circuits from the External Power 53-35-13-000-002 Removal of the Quick-Release Access Panels from the Belly Fairing Structure 21-51-13-991-001 Fig. 401
3. Job Set-up
__________ Subtask 21-51-13-861-050
A. Energize the aircraft electrical circuits (Ref. TASK 24-41-00-861-002).
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R
R
R
R
Subtask 21-51-13-865-050
B. Open, safety and tag this(these) circuit breaker(s):
-------------------------------------------------------------------------------PANEL DESIGNATION IDENT. LOCATION -------------------------------------------------------------------------------FOR 23HB1
49VU AIR COND/TEMP CTL/SYS 1 CHAN B/28VDC 52HH D08
122VU AIR COND/TEMP CTL SYS 1/CHAN A/115VAC 49HH X22 122VU AIR COND/TEMP CTL SYS 1/CHAN A/28VDC 51HH X21 122VU AIR COND/TEMP CTL SYS 1/CHAN B/115VAC 50HH Y18
FOR 24HB1 122VU AIR COND/TEMP CTL SYS 2/CHAN A/115VAC 53HH W22 122VU AIR COND/TEMP CTL SYS 2/CHAN A/28VDC 55HH W21 122VU AIR COND/TEMP CTL SYS 2/CHAN B/28VDC 56HH Y21 122VU AIR COND/TEMP CTL SYS 2/CHAN B/115VAC 54HH Y20
Subtask 21-51-13-010-050
C. Get Access
(1) Remove the access panel (Ref. TASK 53-35-13-000-002):
FOR 23HB1
191BB,
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