S 014-004
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A
757 MAINTENANCE MANUAL
P37 PANEL SEE A
SHAFT BOLTS (2)
FAN POWER WIRE
AFT CARGO FAN CURRENT SENSOR, TS5044
AFT CARGO FAN
RELAY, K10164
"B" PLATE - P37 PANEL
A
Aft Cargo Fan Current Sensor Installation
Figure 401
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757 MAINTENANCE MANUAL
(b) Cut the wire on one side of the hole in the current sensor and put a tag on the wire to identify it for installation.
S 034-006
(6)
Cut the vendor wire from the current sensor and put a tag on the wire to identify it for installation.
S 024-007
(7)
Remove the bolts and remove the current sensor.
TASK 21-44-09-404-008
3. Install the Aft Cargo Fan Current Sensor (Fig. 401)________________________________________
A. Equipment
(1)
Cooling source - ice pack, commercially
available
(2)
Heating source - hand-held blow dryer,
commercially available
(3)
Thermometer - hand-held type for ranges 40-80°F
-
commercially available
B.
References
(1)
06-41-00/201, Fuselage Access Doors and Panels
(2)
24-22-00/201, Electrical Power - Control
C.
Access
(1)
Location Zones
119/120 Main Equipment Center
D.
Procedure
S 424-009
(1)
Put the current sensor in position and install the bolts (2 locations).
S 434-010
(2)
Install the fan power wire through the current sensor with one of these steps:
(a)
Put the wire two times through the hole in the current sensor, then attach the wire to terminal A1 of the AFT CARGO FAN RELAY. Put a wrap on the wire bundle as necessary.
(b)
Put the wire two times through the current sensor and put the wire ends together with a splice.
(3)
Install the vendor wire to the current sensor with a splice.
(4)
Close the doors of the miscellaneous electrical equipment panel.
(5)
Close the E/E access door 119BL (Ref 06-41-00).
S 434-011
S 414-012
S 414-013
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757 MAINTENANCE MANUAL
S 704-014
(6)
Do a test of the aft cargo fan current sensor.
(a)
Supply electrical power (Ref 24-22-00).
(b)
Put the APU AND CARGO FIRE CONTROL switch on the pilot's control stand, P8, in the unarmed position.
(c)
If cargo compartment temperature is more than 50°F, use the cooling source to decrease the temperature of the aft cargo temperature control switch.
(d)
To make sure the fan operates, listen for fan noise.
(e)
Use the heating source to increase the temperature of the aft cargo temperature control switch to more than 70°F.
(f)
Make sure the fan continues to operate for about 20 seconds, then stops.
S 864-015
(7) Remove electrical power, if it is not necessary.
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