(a)
Open this circuit breaker and attach DO-NOT-CLOSE tag:

 1)  On the right miscellaneous electrical equipment panel, P37: a) 37D5, AFT EQPT COOLING FAN EXH NO. 1
 S 864-003
 (2)  
Do the steps that follow to remove the No. 2 fan (4):

 (a)  
Open these circuit breakers and attach DO-NOT-CLOSE tags:

 1)  On the miscellaneous electrical equipment panel, P70: a) 70B2, AFT EQPT COOLING FAN EXH NO. 2
 S 014-004
 (3)  
Open the No. 2 cargo door, 822 (AMM 06-46-00/201).

 S 014-005

 (4)  
Remove the aft bulkhead lining in the bulk cargo compartment (AMM 25-50-03/401).

 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

 21-26-01
 ALL  ú ú 06 Page 401 ú Sep 20/97
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL

4. FAN NO. 1
1. BOLT
5. ISOLATOR 4. FAN NO. 2
2.
 WASHER FLOW

3.
 NUT (2 LOCATIONS)

A
11. SCREW
10. WASHER
9. NUT
FLOW
7. CLAMP
VENTILATION

(4 LOCATIONS)
FANS

6. ELECTRICAL
SEE A
CONNECTOR

8. BONDING
JUMPER

14. FLEXIBLE DUCT (2 LOCATIONS)
13. BOLT
A
5. ISOLATOR FWD
2.
 WASHER

3.
 NUT

OUTBD
VENTILATION FANS (NO. 1 FAN INSTALLATION IS SHOWN, NO. 2 IS EQUIVALENT)
A
4. FAN NO. 1 4. FAN NO. 2 13. BOLT
2. WASHER
12. FAN
3. NUT
BRACKET
5. ISOLATOR
OUTBD
6. ELECTRICAL CONNECTOR
8. BONDING JUMPER11. SCREW
10. WASHER A-A 9. NUT
Aft Equipment Ventilation Fan Installation Figure 401
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
 GUN 001-010, 101-104 ú 21-26-01
 ú ú 08 Page 402 ú May 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL

6. ELECTRICAL  1. SCREW 
CONNECTOR  2. WASHER 
5. CLAMP  3. NUT (2 LOCATIONS  4. SLEEVE 5. CLAMP 
12. SCREW  4. SLEEVE  PER FAN)  6. ELECTRICAL 
2. WASHER  CONNECTOR 
(QTY 3) 
3. NUT  7. BONDING 
JUMPER 
VENTILATION 
DUCT  A  8. CLAMP 
(2 LOCATIONS) 
9. FAN 
9. FAN NO. 2  NO. 1 
10. FAN 

11. SCREW
AFT EQUIPMENT  BRACKET
2. WASHER VENTILATION FANS
3. NUT SEE
A  (2 LOCATIONS A PER FAN)
10. FAN INBD BRACKET
7. BONDING
JUMPER FWD
8. CLAMP (2 LOCATIONS)
AFT EQUIPMENT VENTILATION FANS
A
12. SCREW 6. ELECTRICAL
2.
 WASHER (QTY 3)

CONNECTORS
3.
 NUT

12. SCREW
2. WASHER (QTY 3)
9. FAN NO. 1  3. NUT
1. SCREW 9. FAN NO. 2 2. WASHER
7. BONDING 3. NUT
7. BONDINGJUMPER
(2 LOCATIONS) JUMPER
11. SCREW
2. WASHER
11. SCREW
3. NUT
2. WASHER
(2 LOCATIONS) 3. NUT (2 LOCATIONS)
10. FAN BRACKET 10. FAN BRACKET
OUTBD
A-A
Aft Equipment Ventilation Fan Installation Figure 401A
C33094
 EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù.
 GUN 011-100, 105-999 ú  21-26-01
 ú ú 12 Page 403 ú May 28/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
757
MAINTENANCE MANUAL

 D. GUN 001-010, 101-104;
 Aft Equipment Ventilation Fan Removal (Fig. 401)

 S 034-006
 (1)  
Disconnect the electrical connector (6) from the fan.

 S 034-007

 (2)  
Remove the screw (11), washer (10), and nut (9) to disconnect the bonding jumper (8) from the fan.
　
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