STEERING WHEEL AND CABLE DRUM - REMOVAL/INSTALLATION
1.  Equipment and Material
A.  Cable tensiometer
B.  Rigging pin - 5/16 inch diameter
NOTE:  Rigging pin is part of F70207-61.
C.  Ground Lock Assembly (Ref 32-00-01)
2.  Remove Steering Wheel and Cable Drum
A.  Check that ground lock assembly is installed in nose gear (Ref 32-00-01).
B.  Loosen cable tension at turnbuckles in cables NWSA and NWSB. Gain access through  panel 1103 (Fig. 401).
C.  Remove button plug (9) in steering wheel (1).
D.  Remove wheel nut (10).
E.  Remove steering wheel (l) and spacer (7).
F.  Remove sidewall (3) (Ref Chapter 25).
G.  Remove three screws and bearing retainer (11).
H.  Remove cotter key and shaft nut (18).
I.  Support cable drum (4) and pull shaft (17) out sufficient to remove inboard bearing (8) and spacer (6) then remove shaft (17).
J.  Remove cable drum (4).
K.  Remove cotter keys (5 and 14) in cable drum (4) and remove cables NWSA, NWSB.
NOTE:  If necessary to remove housing (13), remove insulation around three bolts and remove bolts.
L.  Remove outboard bearing (15) from housing (13).
May 20/82 32-51-41 Page 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.

3. Install Steering Wheel and Cable Drum
A.  Install outboard bearing (15) in housing (13) (Fig. 401).
B.  Position cables in cable drum (4) and install cotter keys (5, 14).
C.  Position cable drum (4), spacers (6,7), bearing (8), and install shaft (11). Line up index points on splines.
D.  Install washer (16) and shaft nut (18).
E.  Align cotter pin holes and install cotter key.
F.  Install bearing retainer (11) with three screws.
G.  Install sidewall (3) (Ref Chapter 25, Passenger Cabin Lining and Insulation).
H.  Install rig pin (2).
I.  Install steering wheel (1).
NOTE:  The arrow or pointer on the steering wheel should align with arrow on sidewall when rigging pin is installed.
J.  Install washer, wheel nut (10) and button plug (9). Tighten to 50-75 lb-in above run-on torque (375 lb-in max).
K.  Tension cables as required per adjustment test section 32-51-0.
L.  Remove rig pin (2).
M.  Check operation of steering system per 32-51-0, steering system adjustment test.
500 
32-51-41 Page 402  BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.  Jun 20/84 

500  Steering Wheel and Cable Drum Installation 
Aug 15/67  Figure 401  32-51-41 
Page 403 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

STEERING CYLINDER - REMOVAL/INSTALLATION
1.  Equipment and Materials
A.  Grease - MIL-G-21164 or MIL-G-23827 optional to BMS 3-33 (Ref 20-60-2, Lubricants)
B.  Corrosion Preventive Compound - MIL-C-16173C, Grade 2 (Refer to 20-60-2, Lubricants)
C.  Rigging pin - .311/.309 -inch diameter
NOTE:  Rigging pin is part of F70207-61.
D.  Ground Lock Assembly (Ref 32-00-01)
E.  Sealant - BMS 5-95 (Ref 20-30-11)
2.  Remove Steering Cylinders
A.  Check that ground lock assembly is installed in nose gear (Ref 32-00-01).
B.  Depressurize hydraulic system A (Ref 29-11-0, Maintenance Practices).
C.  Remove metering valve cover (l, Fig. 401).
D.  Remove metering valve (Ref 32-51-11, Removal/Installation).
E.  Disconnect steering cables:
(1)  
Install rigging pin in cable drum in sidewall behind cockpit steering wheel.

(2)  
Loosen cable NWSA and NWSB tension at turnbuckles. Gain access through panel 1103.

NOTE:  NWSA turnbuckles are located between steering wheel and rudder pedal steering quadrant. The other NWSA turnbuckle is outboard of nose wheel well opposite upper part of shock strut. NWSB turnbuckle is also outboard of nose wheel well.

(3)  
Remove torsion link apex bolt.

(4)  
Turn torsion link and steering collar approximately 55 degrees left. Remove right hand cable guard (42). Turn steering collar approximately 55 degrees right and remove left cable guard.

(5)  
Remove two spring pins (41) in steering collar cable groove (40) on aft side of nose gear shock strut (28).

(6)  
Disconnect cables and put cables aside.

F.  Remove steering collar:
(1)  
Turn collar (38) approximately 55 degrees left.

(2)  
Remove right steering cylinder attach bolt (23) and two steering collar bolt bushings (19, 22).
　
中國(guó)航空網(wǎng) m.k6050.com
航空翻譯 www.aviation.cn
本文鏈接地址：737 AMM 飛機(jī)維護(hù)手冊(cè) 起落架 LANDING GEAR(178)