A
737-300/400/500MAINTENANCE MANUAL
(i) Remove the actuator walking beam arm (2) and move the trunnion link (7) clear of the shock strut (3).
S 024-197
(6)
Disconnect the trunnion link (9) from the drag strut (4), (Fig. 407).
(a)
Remove the drag strut upper bolt (5).
(b)
Disconnect the top end of the drag strut (4) from the trunnion link (9).
(c)
Attach the drag strut (4) to the shock strut with a line, (Stage 2, Fig. 405).
(d)
Mark and keep the drag strut upper bolt (5) for subsequent installation.
NOTE: The bolt is identified by a yellow head.
____
(e)
Lift the airplane on jacks until the tires clear the ground so that the landing gear can move in the inboard direction (to retraction).
(f)
Lightly hit the end of the trunnion link with a lead hammer to move it upward to clear the shock strut lugs (Stage 2, Fig. 405).
(g)
Hold the trunnion link in position so that it does not touch the landing gear
S 024-198
(7)
Remove the Shock strut (13), (Fig. 408).
(a)
Get access to the aft trunnion bearing (12). 1) Remove the lockbolts (1) and the bearing retainer lock (2). 2) Remove the bearing retainer nut (3). 3) Remove the grease reservoir (4) and the seal ring (11). 4) Remove the lockbolt (5). 5) Loosen the fuse nut (6). 6) Remove the washer (7) and the key (8).
(b)
Use a minimum of three persons to lower the landing gear.
1) If necessary, use the applicable holding fixture to lower the landing gear.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500
MAINTENANCE MANUAL
SEE A
OUTBD
FWD
SHOCK STRUT
1. DOWNLOCK SPRING
TRUNNION LINK 6. TRUNNION PIN
5. SPRING SUPPORT SHAFT
2. SPRING SUPPORT CAP 4. REACTION LINK
FWD
2A. WASHER
1. DOWNLOCK SPRING A 3. REACTION LINK UNIVERSAL
Reaction Link Attachment to Shock Strut Figure 404
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
SWING UPTRUNNION LINK CLEAR OFPIN REMOVED
SHOCK STRUT LUGS
REAR
ADJUST THE POSITION OF THE SHOCK
FWD IF IT IS
NECESSARY
STAGE 1 STAGE 2 DISCONNECT DRAG STRUT AND REMOVE GEAR FROM REMOVE TRUNNION LINK PIN REAR TRUNNION BEARING
SUPPORT GEAR
HIGH ENOUGH TO
KEEP TORSION
UNSCREW FORWARD
LINKS CLEAR BEARING SLEEVEREAR WING
STAGE 3 STAGE 4 REMOVE GEAR FROM AIRPLANE REMOVE TRUNNION LINK
Main Landing Gear Removal Sequence
Figure 405
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
SEE A
OUTBD
FWD
9. TRUNNION PIN
8. THREAD PROTECTOR (F80115-1)
FWD INBD
LINK
737-300/400/500
MAINTENANCE MANUAL
1. ANTIROTATION BOLT
4. TRUNNION PIN LOCKBOLT
7. TRUNNION
2. ACTUATOR WALKING
BEAM ARM
3. SHOCK
STRUT
4. TRUNNION PIN
LOCKBOLT
6. TRUNNION
5A. SPECIAL PIN NUT
WASHER
5. RETAINER
WASHER
A
Trunnion Link Shock Strut Attachment
Figure 406
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú 中国航空网 www.aero.cn 航空翻译 www.aviation.cn 本文链接地址：737-300 400 500 AMM 飞机维护手册 起落架 LANDING GEAR 1(46)
