Reactivation of the Brake Fan

TASK 32-48-00-440-803-A
Reactivation of the Brake Fan

ZONE: 210

1. Reason for the Job
MMEL 32-48-01
BRAKE FAN (FAA ONLY)
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD
121AL, 831, 841

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 32-48-00-720-001-A	Functional Test of the Brake Fans
TASK 52-10-00-010-001-A	Opening of the Passenger/Crew Door
TASK 52-10-00-410-001-A	Closing of the Passenger/Crew Door

3. Job Set-up
Subtask 32-48-00-861-053-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Open access door 121AL to get access to the external power receptacle and panel 108VU.
(2) Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001).

Subtask 32-48-00-010-055-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT)-ADJUSTABLE in position in front of applicable passenger/crew door 831 ( 841).
(2) Open passenger/crew door 831 ( 841) (Ref. AMM TASK 52-10-00-010-001).
(3) Get access to panel 121VU.

Subtask 32-48-00-865-064-A ** ON A/C NOT FOR ALL

C. Table of the circuit breakers used in this procedure:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 2790GMFOR FIN: 2789GM
121VU	HYDRAULIC/BRK FAN/WHEELS/1 AND 2	1GS	L32
FOR FIN: 2792GMFOR FIN: 2791GM
121VU	HYDRAULIC/BRK FAN/WHEELS/3 AND 4	2GS	L35

4. Procedure
Subtask 32-48-00-440-053-A ** ON A/C NOT FOR ALL

A. Reactivation of the Brake Fan
(1) Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
(a) FOR [2789GM] , [2790GM]

1GS.

(b) FOR [2791GM] , [2792GM]

2GS.

Subtask 32-48-00-720-051-A ** ON A/C NOT FOR ALL

B. Test(s)
(1) Do the functional test of the brake fans (Ref. AMM TASK 32-48-00-720-001).

5. Close-up
Subtask 32-48-00-410-054-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close panel 121VU.
(3) Close passenger/crew door 831 ( 841) (Ref. AMM TASK 52-10-00-410-001).
(4) Remove the access platform(s).

Subtask 32-48-00-860-064-A ** ON A/C NOT FOR ALL

B. Put the aircraft back to its initial configuration.
(1) Remove the ground support and maintenance equipment, the special and standard tools and all other items.
(2) De-energize the ground service network
(Ref. AMM TASK 24-42-00-862-001).
(3) Close access door 121AL.

[Rev.10 from 2021] 2026.04.01 00:50:31 UTC