Parking Brake Linkage Installation
Figure 401 (Sheet 3)
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32-44-11
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
PARKING BRAKE SHUTOFF VALVE - REMOVAL/INSTALLATION
__________________________________________________
1. General
A. This procedure removes and installs the shutoff valve of the parking brake.
TASK 32-44-21-004-001
2. Parking Brake Shutoff Valve Removal (Fig. 401)___________________________________
A. Standard Tools and Equipment
(1)
Chocks - Wheel
B.
References
(1)
29-15-00/201, Hydraulic Systems
(2)
32-00-01/201, Ground Locks
C.
Access
(1)
Location Zone
101 Control Cabin - Left
102 Control Cabin - Right
216 Left Main Wheel Well
217 Right Main Wheel Well
310 Left Main Landing Gear
410 Right Main Landing Gear
D.
Procedure
S 494-002
(1)
Make sure you install the ground locks of the landing gear (Ref 32-00-01/201).
S 494-003
(2)
Put chocks on the wheels and release the parking brake.
S 844-004
(3)
Open the ANTISKID FAIL WARN & PARKING BRAKE circuit breaker on the P6 panel.
(4)
Disconnect the electrical connector at the valve.
S 844-006
(5)
Remove the pressure from hydraulic system B
(Ref 29-15-00/201).
S 844-007
(6)
Fully push the brake pedals 12 times (or until the accumulator gage does not show a pressure drop each time you push the pedals) to remove the pressure from the brake accumulator.
S 034-008
(7)
Disconnect the hydraulic lines from the shutoff valve and seal them with plugs.
S 034-005
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
S 034-009
(8)
Remove the three attachment bolts.
S 024-010
(9)
Remove the shutoff valve of the parking brake from the bracket, remove reducers, discard O-rings, and seal the ports with plugs.
S 024-011
(10)
Remove the reducers.
S 844-012
(11)
Discard the O-rings and seal the ports with plugs.
TASK 32-44-21-404-013
3. Parking Brake Shutoff Valve Installation________________________________________
A. References
(1)
29-15-00/201, Hydraulic Systems
B.
Access
(1)
Location Zone
101 Control Cabin - Left
102 Control Cabin - Right
216 Left Main Wheel Well
217 Right Main Wheel Well
C.
Procedure
S 424-014
(1)
Install the reducers with new O-rings in the shutoff valve of the parking brake.
S 424-015
(2)
Use the three attach bolts to install the shutoff valve on the bracket in the main wheel well.
S 094-016
(3)
Remove the plugs and the caps and connect the hydraulic lines to the shutoff valve.
(4)
Pressurize hydraulic system B (AMM 29-15-00/201).
(5)
Connect the electrical connector to the valve.
S 844-017
S 434-018
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