737 AMM 飞机维护手册 起落架 LANDING GEAR(40)

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A.  Ground Lock Assemblies (Ref 32-00-01)
B.  Lubricant MIL-G-21164 or MIL-G-23827 optional to BMS 3-33 (Ref 20-30-21)
2.  Prepare to remove T-bolt assembly
A.  Check that all ground lock assemblies (Ref 32-00-01) are installed.
B.  Depressurize hydraulic system A (Ref 29-11-0)
3.  Remove T-bolt assembly
A.  Remove hydraulic line support from lower drag strut.
B.  Release electrical harness bracket clamp from lower drag strut.
C.  Support shock strut inner door and disconnect control rod assembly. Support shock strut door clear of work area.
D.  Jack airplane approximately 3 inches (Ref Chapter 7, Airplane Jacking).
E.  Lift wheels as required using axle jack.
F.  Remove side strut lower attachment bolt from universal assembly.
G.  Secure lower end of upper drag strut to prevent it swinging forward.
H.  Remove upper attachment bolt from lower drag strut.
I.  Remove nut and washer from T-bolt assembly.
J.  Remove nut from bolt thru T-bolt assembly and shock strut and remove bolts
K.  Swing lower drag strut, with T-bolt assembly, forward to reset on upper torsion link.
L.  Remove T-bolt and universal assembly.
4.  Install T-bolt assembly
A.  Apply liberal amount of lubricant to T-bolt bearing surfaces.
B.  Position thrust washer on T-bolt and insert T-bolt thru universal assembly.
C. Insert T-bolt into lower drag strut.
D.  Swing drag strut upward to align T-bolt with shock strut fitting.
E.  Apply liberal amount of lubricant to washer, bolt shank and threads.
F.  Insert bolt, with head inboard, thru shock strut fitting and T-bolt.
G.  Position support rod fitting from shock strut door support on bolt. Add nut.
H.  Tighten nut to driving torque plus 400 pound-inches lube torque.
I.  Install washer on T-bolt against lower drag strut. Add nut and tighten to 1200-1500 pound-inches, lube torque.
J.  Position upper drag strut in lower drag strut fork.
K.  Align holes and insert bolt with head end inboard. Add washer and nut.
L.  Tighten nut to 100-150 pound-inches lube torque. If necessary, back off nut to align nearest slot and install cotter pin.
M.  Connect lower side strut to universal assembly.
(1)  
Place lower side strut into clevis on universal assembly.

(2)  
Insert attachment bolt with head end aft. Add washer and nut.

(3)  
Tighten nut to driving torque plus 400 pound-inches lube torque.

N.  Position shock strut inner door and connect control rod assembly.
O.  Install bracket clamp for electrical harness onto lower drag strut.
P.  Install hydraulic line support on lower drag strut.
Q.  Lower airplane and remove jacks (Ref Chap. 7, Airplane Jacking).
Sep 01/02 32-11-42 Page 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.

Main Gear T-Bolt Installation  500 
32-11-42Page 402   Figure 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  May 20/82 

MAIN GEAR TORSION LINKS - REMOVAL/INSTALLATION
1. General
A.  The main gear torsion links are removed after damage, or when bushings are worn beyond service limits. Removal of upper torsion link also disconnects bottom end of lower drag strut. On the right gear, the upper torsion link is connected to a spoiler lockout mechanism. The main tires should be removed and the shock strut partially extended to provide clearance for the upper torsion link pin when replacing the upper torsion link. The main gear brakes also should be removed to provide clearance for the lower torsion link pin when replacing the lower torsion link.
2.  Equipment and Materials
A.  Ground Lock Assemblies - (Ref 32-00-01)
B.  Grease - MIL-G-21164 or MIL-G-23827 optional to BMS 3-33
3.  Remove Main Gear Torsion Links
A.  Check that all ground lock assemblies are installed (Ref 32-00-01).
B.  If replacing upper torsion link, remove main gear wheels (Ref 32-45-11 R/I) and partially extend shock strut by raising airplane (Ref Chapter 7, Jacking Airplane).
C.  If replacing lower torsion link or upper and lower torsion links, remove main gear wheels (Ref 32-45-11 R/I) and main gear brakes (Ref 32-41-41 R/I).
D.  Remove pins connecting hydraulic line support brackets (24, Fig. 401) to lower torsion link.
E.  Disconnect hydraulic line guides (16) from main gear damper (17). Secure lines clear of torsion links.
F.  Disconnect link (21) connecting electrical harness to lower torsion link (23). Observe 
spacer (19) and bushing (20).
　
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