737-300 400 500 AMM 飞机维护手册 起落架 LANDING GEAR 1(45)

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 NOTE: If you removed the stabilizer beam of the main landing gear
____ beam to make the removal of the actuator assembly easier, the step that follows must be done.
 (a)
Install the stabilizer beam of the main landing gear beam.

 G.
Procedure to Remove the Main Landing Gear

 S 034-147
 (1)  
Disconnect the main gear lower side strut (1) from the side strut universal (2), (Fig. 403).

 (a)  
Remove the bolt (5).

 (b)  
Disconnect the lower end of the lower side strut (1) from the side strut universal (2), (Fig. 403). 1) Let the strut hang from the center pivot.

 S 024-124
 (2)  
If the right main landing gear is to be removed, disconnect the interlock valve cable of the ground spoiler (AMM 27-62-51/401).

 S 024-195

 (3)  
Remove the downlock springs (1), (Fig. 404).

 (a)  
Decrease the spring load on the attachment points of the downlock springs (1), (Fig. 404). 1) Attach a cord to the inboard end of the downlock spring (1)

 and put it over the uplock support shaft (5).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
1. ACTUATOR WALKING BEAM HANGER
12. ACTUATOR
11. TRUNNION LINK HYDRAULIC SWIVEL
10. TRUNNION LINK
UPPER DRAG STRUT
9. ELECTRICAL HARNESS
8. CLAMPS
7. HYDRAULIC
 LINES

6. DAMPER HYDRAULIC LINE CONNECTION
5. MAIN GEAR DAMPER
FWD
A
737-300/400/500MAINTENANCE MANUAL
2. ACTUATOR WALKING BEAM
SEE A
WALKING BEAM ARM
SHOCK STRUT
3. BRACKET
LOWER DRAG STRUT
4. LINKS
INBD
11. HYDRAULIC
 SWIVEL

FWD
A
Main Gear Components
Figure 402

10. TRUNNION LINK
HYDRAULIC
LINE

11. HYDRAULIC SWIVEL
13. DOOR ACTUATOR FITTING
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 2) Pull the cord to extend the downlock springs (1).
 (b)  Disconnect the downlock springs (1) from their outboard attachments (Fig. 404).
 S 024-022
 (4)  
Disconnect the reaction link universal (3) from the trunnion pin (6), (Fig. 404).

 (a)  
Put the reaction link (4) in a position so that it does not touch the shock strut.

 S 024-196
 (5)  
Disconnect the trunnion link (7) from the shock strut (3), (Fig. 406).

 (a)  
Put chocks on the aft side of the wheels, (Stage 1, Fig. 405).

 (b)  
Hold the gear in position by hand.

 (c)  
Remove the antirotation bolt (1) from the actuator walking beam arm (2), (Fig. 406).

 (d)  
Remove the nuts and the washers from the trunnion pin lockbolts (4).

 (e)  
Use an adapter wrench and remove the trunnion pin nut (6).

 (f)  
Remove the retainer washer (5) and the special washer (5A) from the trunnion pin (9).

 (g)  
Install the thread protector (8) on the trunnion pin (9).

 (h)  
Remove the trunnion pin (9) with light hits from a lead hammer.

1. LOWER SIDE
5. BOLT  STRUT
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
2. SIDE STRUT
 UNIVERSAL 
3. UPPER
 DRAG 
INBD  FWD  STRUT
SEE A 
4. LOWER
 DRAG 
STRUT
INBD  FWD 
A 
Main Gear Side Strut Lower Attachment 
　
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