-------------------------------------------------------------------------------FIN | FUNCTIONAL DESIGNATION | PANEL|ZONE|ACCESS | ATA
 | | | | DOOR | REF. -------------------------------------------------------------------------------2789GM FAN-BRAKE, WHEEL 1 731 32-48-51 2790GM FAN-BRAKE, WHEEL 2 731 32-48-51 2791GM FAN-BRAKE, WHEEL 3 741 32-48-51 2792GM FAN-BRAKE, WHEEL 4 741 32-48-51
 7GS MOTOR ASSY-BRK FAN,WHEEL AXLE 1 731 32-48-51 8GS MOTOR ASSY-BRK FAN,WHEEL AXLE 3 741 32-48-51 9GS MOTOR ASSY-BRK FAN,WHEEL AXLE 2 731 32-48-51 10GS MOTOR ASSY-BRK FAN,WHEEL AXLE 4 741 32-48-51
R **ON A/C 301-399, 401-499,
 1. Component Location
__________________
 (Ref. Fig. 001A)

 -------------------------------------------------------------------------------FIN | FUNCTIONAL DESIGNATION | PANEL|ZONE|ACCESS | ATA | | | | DOOR | REF.
 -------------------------------------------------------------------------------7GS MOTOR ASSY-BRK FAN,WHEEL AXLE 1 731 32-48-51 8GS MOTOR ASSY-BRK FAN,WHEEL AXLE 3 741 32-48-51 9GS MOTOR ASSY-BRK FAN,WHEEL AXLE 2 731 32-48-51
 10GS MOTOR ASSY-BRK FAN,WHEEL AXLE 4 741 32-48-51 2866GM WHEEL ASSY 731 27-20-00 2867GM WHEEL ASSY 731 27-20-00 2868GM WHEEL ASSY 741 27-20-00 2869GM WHEEL ASSY 741 27-20-00 2874GM ADAPTATION KIT 731 27-20-00 2875GM ADAPTATION KIT 731 27-20-00 2876GM ADAPTATION KIT 741 27-20-00 2877GM ADAPTATION KIT 741 27-20-00
R 1EFF : 051-099, 301-399, 401-499, 1 32-48-00Page 1 1 1 Aug 01/05 1 1 1CES 1

R  Brake Cooling - Component Location 
R  Figure 001 
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 Brake Cooling - Component Location
 Figure 001A

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R  **ON A/C 051-099, 301-399, 401-499,
 2. System Description__________________
 A. Mechanical Installation
 **ON A/C 051-099,
 (Ref. Fig. 002)
 **ON A/C 301-399,
 (Ref. Fig. 002A) 
R  **ON A/C 401-499, 
R  (Ref. Fig. 002B) 
R  **ON A/C 051-099, 301-399, 401-499,
 The fans permit high speed cooling of the brakes. They thus decrease the turn around time of the aircraft if you make short flights with high energy braking. One fan is installed on each wheel of the main gear. Each fan includes: - a motor, - an impeller, - a shroud with a debris guard. The fan motor is installed in the wheel axle, where an adaptor assy holds it in position. The motor drives the impeller which makes a flow of air from the heat pack to the exterior through the debris guard. The tachometer drive shaft passes through the hollow shaft of the fan motor. The shroud drives the tachometer.
 B. Electrical Installation (Ref. Fig. 003) The fan motor is of the three-phase type. The two motors in each twin-wheel axle have a common supply. With the landing gear downlocked, you push the illuminated pushbutton switch 4GS to start the fans. 

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R  Brake Fan Installation 
R  Figure 002 
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 Brake Fan Installation 
R  Figure 002A
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R  Brake Fan Installation 
R  Figure 002B 
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 Brake Cooling System - Wiring Diagram
 Figure 003

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 The fans must be started as soon as the HOT legend of the pushbutton
 switch comes on.
 Illumination of the HOT legend shows that the temperature of one brake
 minimum is above the brake overheat threshold.
 The control relays are in the relay box 103VU and the circuit breakers on
 the panel 121VU.

 1EFF : 051-099, 301-399, 401-499, 1 32-48-00Page 9 1 1 Aug 01/05 1 1 1CES 1 BRAKE COOLING - DEACTIVATION/REACTIVATION

_________________________________________
 TASK 32-48-00-040-001
 Deactivation of the Brake Cooling System
 1. Reason for the Job
__________________
 Refer to the CDL TASK: 32-1
　
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