C. Restore Airplane to Normal
(1)
Install gear ground lock assembly (Ref 32-00-01).
(2)
Close manual extension access door.
(3)
Determine if there is further need for pneumatic, hydraulic, and electrical power on airplane; if not, shut down sources.
(4)
Lower airplane and remove jacks (Ref Chapter 7).
D. Test Manual Extension (Airplane on Gear)
(1)
Check all ground lock assemblies are installed (Ref 32-00-01).
(2)
With all gear down and locked, place landing gear control lever in OFF position.
(3)
Open access door in flight deck floor.
(4)
Attach spring scale to manual extension handle of gear being tested.
(5)
Pull upward and forward on manual extension handle with spring scale for full travel of approximately 14.4 to 16.1 inches.
(a)
Check that force required to release main gear uplock system does not exceed 18 pounds.
(b)
Check the manual extension handle returns to stowed position without hesitation or evidence of binding.
(6)
Repeat steps (1) thru (5) for opposite gear.
(7)
Close manual extension access door.
500
May 01/01 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 32-34-0 Page 507
MANUAL EXTENSION CONTROL MECHANISM - REMOVAL/INSTALLATION
1. General
A. The manual extension control mechanism provides controls for the nose gear manual extension system and each main gear manual extension system. The complete mechanism must be removed and installed when performing maintenance on either the nose gear or individual main gear manual extension systems.
2. Remove Manual Extension Control Mechanism
A. Remove cabin floor panel (15, figure 401) and disconnect cable MNGEA at turnbuckle. (See view 1.)
B. Remove cargo compartment ceiling panels at approximately body station 420 and disconnect cables MLGEA-L, and MLGEA-R, at turnbuckles.
C. Detach manual extension handle cables (2) from control drums (10). (See detail A.)
D. Remove cable retainers (1) and detach control cables (14) from control drums (10). (See detail A.)
E. Remove grommet from clip on outboard cable guard and free elevator cable EAR (9) from control mechanism through slot in clip.
F. Remove cotter pin (11), nut (13), and washer (12) from shaft (4) and remove shaft from control mechanism.
NOTE: When performing step F, be prepared to catch spacer (7) as shaft (4) is pulled from control mechanism.
G. Remove bolt (5) attaching inboard cable guard (6) to support (3).
H. Remove control mechanism with control drums (10) from airplane structure moving outboard end of mechanism forward.
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May 01/01 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 32-34-11 Page 401
Manual Extension Control Mechanism Installation 500
32-34-11 Page 402 Figure 401 (Sheet 1) BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Nov 15/67
500 Manual Extension Control Mechanism Installation
Nov 15/67 Figure 401 (Sheet 2) BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 32-34-11 Page 403
3. Install Manual Extension Control Mechanism
A. Place control drums (10, figure 401) and spacer (7) in cable guard assembly (8).
B. Position control mechanism in place on airplane structure.
C. Insert shaft (4) through support (3), cable guard assembly (8), spacer (7), control drums (10), and structure.
D. Install bolt (5) attaching inboard cable guard (6) to support (3).
E. Install washer (12) and nut (13) on shaft (4). Torque nut 50 to 350 pound-inches. Install cotter pin (11).
F. Insert elevator cable EAR (9) through slot in clip on outboard cable guard and install grommet on clip.
G. Install control cables (14) on control drums (10) with cable retainers
(1) (See detail B.)
H. Install manual extension handle cables (2) on control drums (10) with cotter pins. Bend end of cotter pin into drum. (See detail A.)
I. Connect cables MLGEA-L and MLGEA-R, at approximately body station 420.
J. Connect cable MNGEA. (See view 1.)
K. Adjust main gear manual extension system per 32-34-0.
L. Test operation of main gear manual extension system per 32-34-0.
M. Adjust nose gear manual extension system per 32-35-0.
N. Test operation of nose gear manual extension system per 32-35-0.
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