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A 737-300/400/500MAINTENANCE MANUAL
SEE A
HYDRAULIC
LINE

BOLTS (3 LOCATIONS)
BYPASS VALVE
HYDRAULIC LINE
BONDING
JUMPER

ELECTRICAL
POSITION CONNECTOR
INDICATOR
BYPASS
VALVE
OPERATOR

A

Installation of the Flow Limiter Bypass Valve for the Landing Gear

Figure 201

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A
737-300/400/500MAINTENANCE MANUAL
 (2)  
AMM 32-00-01/201, Landing Gear Ground Lock Assemblies

 B.  
Access

 (1)  
Location Zone
 101 Left Control Cabin
 102 Right Control Cabin
 216 Left Main Wheel Well

 C.  
Install the Bypass Valve

 S 092-009
 (1)  
Remove all the plugs and caps from the bypass valve and the hydraulic lines.

 S 422-010

 (2)  
Put the bypass valve in its position on the bracket and install the two top bolts. Do not tighten them.

 S 432-011

 (3)  
Put the bonding jumper on the lower hole and install the lower mounting bolt through lug.

 S 432-012

 (4)  
Tighten the three bolts that hold the bypass valve to the bracket.

 S 432-013

 (5)  
Connect the hydraulic lines to the bypass valve.

 S 432-014

 (6)  
Install the electrical connector on the valve actuator.

 TASK 32-31-81-862-038
 4.  Inspection of the Landing Gear Flow Limiter Bypass Valve________________________________________________________
 A.  Do An Inspection of the Flow Limiter Bypass Valve for Airplanes that Have AUTO SLAT COMPUTERS
 S 862-036
 (1)  Supply electrical power (AMM 24-22-00/201).
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A
737-300/400/500MAINTENANCE MANUAL
 S 422-077
 WARNING: MAKE SURE THE GROUND LOCK ASSEMBLIES ARE INSTALLED ON ALL THE
_______ LANDING GEAR. WITHOUT THE GROUND LOCKS, THE LANDING GEAR CAN RETRACT AND CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT.
 (2)  
Make sure the ground lock assemblies are installed in the nose and main landing gear (AMM 32-00-01/201).

 S 862-055

 (3)  
Put the landing gear lever in the down position.

 S 862-040

 (4)  
Make sure these circuit breakers are closed:

 (a)  
P6 Main Power Distribution Panel
 1) PTU/LG BYPASS CONTROL 1
 2) TE FLAP POS IND
 3) FLAP SHUTOFF VALVES
 4) HYD SYS LG SYS XFR VALVE PRIMARY CONTROL
 5) AUTOSLAT NO. 1, AC
 6) AUTOSLAT NO. 1, DC

 (b)  
P18-2 Panel
 1) STALL WARNING NO. 1, DC
 2) STALL WARNING NO. 1, AC

 S 862-041
 (5)  
Make sure these circuit breakers are opened:

 (a)  
P6 Panel
 1) NOSE GEAR AIR/GND
 2) STDBY HYD PUMP-NORMAL
 3) STDBY HYD PUMP-ALT
 4) PTU/LG BYPASS VALVE CONT 2

 S 862-042
 (6)  
Put the airplane main gear in air mode by disconnecting the push pull cable from the right hand main gear upper torsion link and extending the cable.

 S 862-043

 (7)  
Supply "B" system hydraulic pressure by means of the "B" system electric motor pump (AMM 29-15-00/201).
　
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