DOC AIRBUS | AMM A320FBRAKE COOLING - DESCRIPTION AND OPERATION
** ON A/C NOT FOR ALL
1. Component Location
** ON A/C NOT FOR ALL 
Brake Cooling - Component Location| FIN | FUNCTIONAL DESIGNATION | PANEL | ZONE | ACCESS DOOR | ATA REF |
|---|---|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||||
| 7GS | MOTOR ASSY-BRK FAN,WHEEL AXLE 1 | 731 | 32-48-51 | ||
| ** ON A/C NOT FOR ALL | |||||
| 8GS | MOTOR ASSY-BRK FAN,WHEEL AXLE 3 | 731 | 32-48-51 | ||
| ** ON A/C NOT FOR ALL | |||||
| 8GS | MOTOR ASSY-BRK FAN,WHEEL AXLE 3 | 741 | 32-48-51 | ||
| ** ON A/C NOT FOR ALL | |||||
| 9GS | MOTOR ASSY-BRK FAN,WHEEL AXLE 2 | 731 | 32-48-51 | ||
| ** ON A/C NOT FOR ALL | |||||
| 10GS | MOTOR ASSY-BRK FAN,WHEEL AXLE 4 | 731 | 32-48-51 | ||
| ** ON A/C NOT FOR ALL | |||||
| 10GS | MOTOR ASSY-BRK FAN,WHEEL AXLE 4 | 741 | 32-48-51 | ||
| ** ON A/C NOT FOR ALL | |||||
| 2866GM | IMPELLER ASSY-FAN, WHEEL 1 | 731 | 32-48-51 | ||
| 2867GM | IMPELLER ASSY-FAN, WHEEL 2 | 731 | 32-48-51 | ||
| 2868GM | IMPELLER ASSY-FAN, WHEEL 3 | 741 | 32-48-51 | ||
| 2869GM | IMPELLER ASSY-FAN, WHEEL 4 | 741 | 32-48-51 | ||
| 2874GM | ADAPTATION KIT-WHEEL 1 | 731 | 32-41-11 | ||
| 2875GM | ADAPTATION KIT-WHEEL 2 | 731 | 32-41-11 | ||
| 2876GM | ADAPTATION KIT-WHEEL 3 | 741 | 32-41-11 | ||
| 2877GM | ADAPTATION KIT-WHEEL 4 | 741 | 32-41-11 | ||
2. System Description
A. Mechanical Installation
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:
The tachometer drive shaft passes through the hollow shaft of the fan motor.
The shroud drives the tachometer.
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:
The tachometer drive shaft passes through the hollow shaft of the fan motor.
The shroud drives the tachometer.
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 tachometer drive shaft passes through the hollow shaft of the fan motor.
The shroud drives the tachometer.
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,
- a wheel adaptation kit,
- an impeller,
- a shroud with a debris guard.
The tachometer drive shaft passes through the hollow shaft of the fan motor.
The shroud drives the tachometer.
B. Electrical Installation
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.
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.
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.
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.