*[1] Install 0.060 wall steel bushing in 2.1212 maximum oversize hole. interference minimum, 0.0013; maximum, 0.0031. Bushing
*[2] Bushing interference minimum, 0.0013; maximum 0.0031. Install NAS75-4 steel bushing or equivalent in 2.0093 maximum oversize hole.
*[3] Spline backlash measured at pitch diameter of spline.
*[4] Install NAS75-4 steel bushing or equivalent in 0.3754 maximum oversize hole. Bushing interference minimum, 0.0002; maximum, 0.0013.
Landing Gear Selector Valve Control Quadrant Assembly Wear Limits
Figure 601 (Sheet 3)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
LANDING GEAR TRANSFER VALVE - REMOVAL/INSTALLATION
__________________________________________________
1. General_______
A. This procedure has these tasks:
(1)
The removal of the transfer valve.
(2)
The installation of the transfer valve.
(3)
An operational test of the transfer valve.
B.
The transfer valve is installed in the wheel well of the right main gear. It is on the keel beam, near the forward end of the wheel well.
TASK 32-31-71-024-001
2. Landing Gear Transfer Valve Removal (Fig. 401)___________________________________
A. References
(1)
AMM 29-15-00/201, Hydraulic Systems A, B, and Standby
(2)
AMM 32-00-01/201, Ground Lock Assemblies
B.
Access
(1)
Location Zones
101, 102 Control Cabin
217 Right Main Wheel Well
C.
Removal
(1) S 494-002Make sure the ground lock assemblies are installed in the nose and main landing gear (AMM 32-00-01/201).
(2) S 864-025Open these circuit breakers and attach DO-NOT-CLOSE tags: (a) P6 Circuit Breaker Panel 1) LDG GEAR SYS XFR VALVE - PRIMARY CONTROL 2) LDG GEAR SYS XFR VALVE - SECONDARY CONTROL
(3) S 864-026Remove power from hydraulic system A (AMM 29-15-00/201).
(4) S 034-027Disconnect the electrical connector from the transfer valve (Fig. 401).
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
LANDING
GEAR LANDING
RETURN GEAR
PRESSURE
VALVE
MOUNTING
MOUNTING BOLT
(4 LOCATIONS) B SYSTEM
PRESSURE
B SYSTEM
RETURN
A SYSTEM
RETURN
A SYSTEM
PRESSURE
ELECTRICAL
SOLENOID CONNECTOR
SUPPORT BRACKET
Transfer Valve Installation for the Landing Gear
Figure 401
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