S 614-025
 (1)  Make sure the fluid in the hydraulic reservoir is at the correct level. Fill if it is necessary (AMM 12-12-01/301).
 S 094-026
 WARNING: USE THE PROCEDURE IN AMM 32-00-15/201 TO REMOVE THE DOOR LOCKS.
_______ THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (2)  
Remove the door locks from the landing gear doors and close the doors (AMM 32-00-15/201).

 S 864-027

 (3)  
Remove the pressure from the hydraulic system if it is not necessary (AMM 29-11-00/201).

 (4)
Remove electrical power if it is not necessary (AMM 24-22-00/201).

 S 864-028
 

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757
MAINTENANCE MANUAL

 ALTERNATE EXTENSION SYSTEM POWER PACK - REMOVAL/INSTALLATION
____________________________________________________________
 1.  General_______
 A.  This procedure contains two tasks. The first task removes the power pack for the alternate extension system. The second task installs the power pack for the alternate extension system.
 TASK 32-35-10-004-003
 2.  Remove the Power Pack for the Alternate Extension System (Fig. 401)________________________________________________________
 A.  References
 (1)  
AMM 29-11-00/201, Pressurize/Depressurize Main Hydraulic System

 (2)  
AMM 32-00-15/201, Landing Gear Door Locks

 (3)  
AMM 32-00-20/201, Landing Gear Downlocks

 (4)  
AMM 32-35-00/201, Landing Gear Alternate Extension

 B.  
Access

 (1)  
Location Zone
 144 Main Landing Gear Wheel Well (Right)

 C.  
Prepare for the Removal

 S 494-001
 (1)  Make sure the downlocks are installed on the nose and main landing gear (AMM 32-00-20/201).
3.
 POWER PACK

4.
 ELECTRICAL

1.
 ATTACH BOLT

CONNECTOR
2.
 WASHER (3 LOCATIONS)

SEE  A
5. HYDRAULIC LINE (2 LOCATIONS)
INBD FWD
A
Alternate Extension System Power Pack Installation
Figure 401

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757 MAINTENANCE MANUAL
 S 864-002
 (2)  If the power pack does not operate, use the procedure in
 AMM 32-35-00/201 to open the landing gear doors.

 S 494-004
 WARNING: USE THE PROCEDURE IN AMM 32-00-15/201 TO INSTALL THE DOOR
_______ LOCKS. THE DOORS OPEN AND CLOSE QUICKLY AND CAN CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT.
 (3)  
Open the doors for the landing gear and install the door locks (AMM 32-00-15/201).

 S 864-005

 (4)  
Remove the pressure from the left hydraulic system and hydraulic reservoir (AMM 29-11-00/201).

 S 864-006

 (5)  
Open this circuit breaker on the main power distribution panel, P6-1, and attach a DO-NOT-CLOSE tag:

 (a)  
6F6, LANDING GEAR ALTN EXT MOTOR

 D.
Procedure to Remove the Power Pack

 S 034-007
 (1)
Disconnect the electrical connector (4) from the power pack (3).

 S 494-025

 (2)  
Install a plug on the electrical connector.

 S 034-008
 CAUTION: INSTALL THE PLUGS QUICKLY IN THE HYDRAULIC LINES TO THE POWER
_______ PACK. THE POWER PACK IS CONNECTED DIRECTLY TO THE HYDRAULIC RESERVOIR. THE LEAKAGE OF TOO MUCH FLUID WILL OCCUR IF YOU DO NOT INSTALL THE PLUGS QUICKLY.
 (3)  
Disconnect the hydraulic lines (5) from the power pack (3).

 (4)  
Install plugs in the hydraulic fittings.

 S 034-009

 (5)  
Remove the bolts (1) that attach the power pack to the structural support (Detail A).

 (6)  
Remove the power pack (3).

 S 494-026
 S 024-010
 

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757 MAINTENANCE MANUAL
 TASK 32-35-10-404-010
 3. Install the Power Pack for the Alternate Extension System (Fig. 401)
_________________________________________________________
 A. Consumable Materials
 (1)  
D00054 Lubricant, Hydraulic Systems - MCS 352

 (2)  
D00148 Fluid, Hydraulic - BMS 3-11, Type IV,
　
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