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时间:2011-04-12 10:23来源:蓝天飞行翻译 作者:航空
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 (a)  
Hold the manual bypass lever up for two seconds.


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747-400 MAINTENANCE MANUAL
 (b)  Open the actuator bleed valve and let 10 cubic inches of fluid, or less, flow out of the valve.
 NOTE: This is to make sure the valve is in its usual
____
 condition.

 S 434-026
 (15)
 Tighten the actuator bleed valve and safety it with lockwire.

 F.
Put the Airplane in its Usual Condition.


 S 614-027
 (1)  
Measure the hydraulic reservoir level and add hydraulic fluid if it is necessary (AMM 12-12-01/301).

 S 614-028

 (2)  
Lubricate the actuator (AMM 12-21-01/301).


 S 864-029
 WARNING:_______REFER TO AMM 32-00-30/201 FOR THE LOCK REMOVAL PROCEDURE. FAST MOVEMENT OF THE DOORS CAN CAUSE INJURIES PERSONS OR DAMAGE TO EQUIPMENT.
 (3)  Remove the door locks for the wing and body landing gear
 (AMM 32-00-30/201).

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747-400 MAINTENANCE MANUAL
 BODY GEAR TRUCK POSITIONING ACTUATOR - INSPECTION/CHECK
_______________________________________________________
 1.  General_______
 A.  The inspection of the truck positioning actuator of the body landing gear includes the task that follows:
 (1)  
Measure the fit of the actuator bearings and the attachment bolts and the bushings.

 B.  
The truck positioning actuator of the body landing gear must be
 disconnected and removed to do the inspection/check.

 

 TASK 32-13-15-206-001
 2.  Body Gear Truck Positioning Actuator For Wear Examination_________________________________________________________
 A.  References
 (1)  
32-13-15/401, Body Gear Truck Positioning Actuator

 (2)  
IPC 32-13-02 Fig. 2, IPC 32-13-11 Fig. 1, IPC 32-13-15 Fig. 2

 B.  
Access

 (1)  
Location Zone
 755 Body Landing Gear, LH
 765 Body Landing Gear, RH


 C.  
Procedure (Fig. 601)


 S 026-002
 (1)  
Remove the truck positioning actuator of the body landing gear (Ref 32-13-15/401).

 S 226-003

 (2)  
Do a check of the wear limits of the actuator bearings, the attachment bolts and the bushings.

 (a)  
Measure the parts as it is necessary and compare the measured dimensions to the limit dimensions.

 (b)  
If the part is not in tolerance, repair or replace as it is necessary.


 S 426-004
 (3)  Install the truck positioning actuator of the body landing gear (Ref 32-13-15/401).
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 32-13-15
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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747-400
MAINTENANCE MANUAL

SHOCK STRUT
TRUCK BODY GEAR  A  B  A  B  ACTUATOR TRUCK POSITIONING BODY GEAR 
2. BUSHING/BOLT 1. BUSHING/BUSHING 
BOLT 
AND BEARING ACTUATOR ROD END  A-A 3. BEARING/BOLT  6. BEARING/BOLT 4. BUSHING/BUSHING  ACTUATOR LUG TRUCK POSITION INNER CYL 
BOLT 

5. BUSHING/BOLT
B-B
Body Gear Truck Positioning Actuator Wear Limits Figure 601 (Sheet 1)
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