737 AMM 飞机维护手册 起落架 LANDING GEAR(127)

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A.  Check that gear ground lock assembly (Ref 32-00-01) is installed in nose gear.
B.  Unlock and remove passenger seats to clear floor covering area from station 664 thru station 695 (Ref Chapter 25, Passenger Seats)
C.  Remove carpet by pulling carpet up from double-backed tape.
D.  Remove right or left outboard panel from station 664 thru station 695 to gain access of control quadrant assembly.
4.  Remove Brake Metering Valve Control Quadrant
A.  Loosen turnbuckles (l, Fig. 401) on cables LGBA, LGBA', LGBB and LGBB'.
B.  Disconnect cotter pin (8) and remove cables LGBA, BGBA', LGBB and LGBB' from control quadrant assembly (2).
C.  Remove four attach bolts (7) from bearing retainer plate (6).
D.  Remove bearing retainer plate (6) and control quadrant assembly (2).
NOTE:  Quadrant assembly (2) will come out as a quadrant, shaft, bearing, and retainer plate (6).
5.  Install Brake Metering Valve Control Quadrant
A.  Align splines of control quadrant assembly (2, Fig. 401) and brake metering valve (4). Install control quadrant assembly (2).
NOTE:  Control quadrant assembly shaft (5) mates with brake metering valve shaft (3) which is spring-loaded to off position.
B.  Install and attach four bolts (7) to bearing retainer plate.
C.  Connect cables LGBA, LGBA', LGBB and LGBB' to control quadrant assembly (2), using cotter pin (8).
D.  Adjust and test brake system per 32-41-0.
6.  Restore Airplane to Normal Configuration
A.  Install right or left outboard panel from station 664 thru station 695.
B.  Install carpet using double-backed tape.
C.  Install passenger seats (Ref Chapter 25, Passenger Seats).
May 20/82 32-41-21 Page 401 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.

Brake Metering Valve Control Quadrant Installation  500 
32-41-21  Figure 401  Feb 15/68 
Page 402 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

BRAKE METERING VALVE CONTROL QUADRANT - INSPECTION/CHECK
1.  General
A.  This data consists of an illustration and a wear limit chart. No procedure is given in this section for gaining access to permit inspection. For this information, refer to Brake Metering Valve Control Quadrant - Removal/Installation.
2.  Brake Metering Valve Control Quadrant Wear Limits (See figure 601.)

500  Brake Metering Valve Control Quadrant Wear Limits 
Nov 15/72  Figure 601 (Sheet 1)  32-41-21 
Page 601 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

Brake Metering Valve Control Quadrant Wear Limits  500 
32-41-21  Figure 601 (Sheet 2)  Nov 15/72 
Page 602 
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 

BRAKE METERING VALVE -REMOVAL/INSTALLATION
1. General
A.  This procedure covers removal/installation of either left or right brake metering valve. The brake metering valve should be removed or installed with brake valve feel augmentation actuator assembly. After removing brake metering valve, these two units, i.e., brake metering valve and brake valve feel augmentation actuator can be separated.
2.  Equipment and Materials
A.  Gear Ground Lock Assemblies (Ref 32-00-01)
B.  Hydraulic Fluid, Fire Resistant -BMS 3-11, or equivalent
C.  Corrosion Preventive Compound -MIL-C-11796, Class 1, 2 and 3.
3.  Prepare to Remove Brake Metering Valve
A.  Check that landing gears are down and locked and ground lock assemblies installed
(Ref 32-00-01).

B.  Chock wheels and release parking brake.
C.  Depressurize hydraulic system A and B (Ref 29-11-0 and 29-12-0 MP).
D.  Discharge brake accumulators by operating brakes fully eight times.
4.  Remove Brake Metering Valve
A.  Remove nut, bolt, and washer (4 places) to disconnect rods from guard. (Fig. 401).
B.  Remove guard from brake metering valve and brake valve feel augmentation actuator assembly.
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 32-41-31 Page 401 

Brake Metering Valve Installation  500 
32-41-31  Figure 401 (Sheet 1)  Feb 15/68 
　
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