(d)  
Write down the extension time.

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 S 715-010
 (5)  Do the steps that follow to do a check of landing gear reversal:
 WARNING: MAKE SURE THE DOWNLOCKS ARE INSTALLED ON THE MAIN LANDING
_______ GEAR BEFORE YOU MOVE THE CONTROL LEVER. IF THE CONTROL LEVER IS MOVED WITHOUT THE DOWNLOCKS INSTALLED, THE MAIN LANDING GEAR CAN RETRACT AND CAUSE INJURY TO PERSONS OR DAMAGE TO EQUIPMENT
 (a)  Move the control lever from DN to UP. When retraction is approximately one half complete, move the control lever back to DN in 3 |1 seconds.
 NOTE: The override button for the control lever must be pushed
____
 in to move the control lever to UP.

 (b)  Make sure the nose landing gear changes direction with no hydraulic leakage or damage to parts.
 S 975-015
 (6)  Compare the landing gear times for operation to the limits shown below:
 ~.................................................... | MAXIMUM OPERATING TIME AT | | 37 GPM HYDRAULIC FLUID FLOW *[1] | ...................................................... | | RETRACTION | EXTENSION | ...................................................... | DOORS CLOSED | | | | (cycle complete) | 20 sec | 32 sec | 2......................…..............…..............1
 *[1]  These values are approximate elapsed times from control lever movement
 S 865-012
 (7)  
Remove the hydraulic power if it is not necessary (Ref 29-11-00/201).

 S 865-011

 (8)  
Remove the electrical power if it is not necessary (Ref 24-22-00/201).

 (9)  
Install the downlock on the nose landing gear (Ref 32-00-20/201).

 (10)
 Lower the airplane and remove the jacks (Ref 07-11-02/201).

 S 495-013
 S 095-014
 

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757 MAINTENANCE MANUAL
 NOSE GEAR RETRACT ACTUATOR - REMOVAL/INSTALLATION
_________________________________________________
 1.  General
_______
 A.  This procedure contains two tasks. The first task is for removal of the retract actuator for the nose landing gear. The second task is for installation of the retract actuator.
 TASK 32-34-01-004-025
 2.  Remove the Retract Actuator for the Nose Landing Gear (Fig. 401, 402)
_____________________________________________________
 A.  References
 (1)  
AMM 29-11-00/201, Main (Left, Right, and Center) Hydraulic Systems

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

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

 B.  
Equipment

 (1)  
Fishpole Hoist - Commercially Available

 (2)  
Actuator Extension/Retraction Pump, Landing Gear -A32007-53, -90, -153 (As Applicable)

 (3)  
Nose Gear Retract Actuator Sling - B32007-1

 C.  
Access

 (1)  
Location Zone
 711 Nose Landing Gear

 D.  
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).
 S 494-027
 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.
 (2)  
Open the doors for the landing gear and install the door locks (Ref (AMM 32-00-15/201).

 S 864-002

 (3)  
Remove the pressure from the left hydraulic system and the hydraulic reservoir (AMM 29-11-00/201).

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MAINTENANCE MANUAL

FITTINGS ON THE AFT WHEEL WELL WALL 1. WASHER

3. NUT
6. PIN
4.
 WASHER

5.
 RETRACT ACTUATOR

A-A

B-B

Nose Landing Gear Retract Actuator Installation
Figure 401

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757 MAINTENANCE MANUAL
SEE A
FISHPOLE HOIST (REF)
HANGER ASSEMBLY
CLAMP ASSEMBLY
NOSE LANDING GEAR RETRACT ACTUATOR (REF)
NOSE LANDING
GEAR (REF)
A
Sling Equipment for the Nose Landing Gear Retract Actuator Figure 402
　
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