21-43-07
 ú ú 07.1 Page 401 ú Sep 28/02
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757
MAINTENANCE MANUAL

P70 PANEL ASEE 
FWD CARGO FAN RELAY 
VENDOR WIRE 
WIRE FAN POWER 
BOLT (2 LOCATIONS)  FWD INBD
CURRENT SENSOR FWD CARGO FAN 
MISC ELEC EQUIP PANEL, P70 A 
Forward Cargo Fan Current Sensor Installation Figure 401 

EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. GUN 001-010 ú

 21-43-07
 ú ú 09 Page 402 ú Jun 20/95
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757 MAINTENANCE MANUAL
 S 034-007
 (5)  
To remove the fan power wire through the current sensor, do the applicable step:

 (a)  
Remove the wire from terminal C1 of the FWD CARGO FAN RELAY and put a tag on the wire to identify it for installation. Remove the wrap from the wire bundle as necessary and pull through the hole in current sensor.

 (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 034-008
 (6)  
Cut the vendor wire from the current sensor and put a tag on the wire to identify it for installation.

 S 024-009

 (7)  
Remove the bolts and the sensor.

 TASK 21-43-07-404-010
 3.  Install the Forward 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

 (3)  
27-61-00/201, Spoiler/Speedbrake Control System

 C.
Access

 (1)  
Location Zones
 119/120 Main Equipment Center

 (2)  
Access Panel
 119BL E/E Access Door

 D.
Procedure

 (1)
Put the sensor in position and install the bolts (2 locations).

 S 434-012

 (2)  
To install the fan power wire through the current sensor, do the applicable step:

 (a)  
Put the wire through the hole in the current sensor two times. Attach the wire to terminal C1 of the FWD CARGO FAN RELAY. Put a wrap on the wire bundle as necessary.

 S 424-011
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. GUN 001-010 ú

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MAINTENANCE MANUAL

 (b)  Put the wire through the current sensor two times and put the wire ends together with a splice.
 S 434-013
 (3)  Install the vendor wire to the current sensor with a splice.
 S 414-014
 (4)  Close the doors of the miscellaneous electrical equipment panel.
 S 414-016
 (5)  Close the E/E access door 119BL (Ref 06-41-00).
 S 704-017
 (6)  Do a test of the forward cargo fan current sensor. (a) Supply electrical power (AMM 24-22-00/201). (b) Put the APU and FIRE CONTROL forward compartment arming switch on the pilot's control stand, P8, in the unarmed position. (c) If the ambient temperature in the cargo compartment is more than 50 degrees F (10 degrees C), decrease the temperature at the temperature control switch with the cooling source. (d) Listen for fan noise to make sure the fan operates. (e) Use the heating source to increase the temperature at the temperature control switch. (f) Make sure the fan stops.
 S 864-018
 (7)  Remove electrical power, if it is not necessary (AMM 24-22-00/201).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. GUN 001-010 ú
　
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