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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
PRECEDING PAGE 
NOT OK - Check nose gear hydraulic plumbing for abnormal restriction. IF -

NOT OK - Remove restriction, flush or replace hydraulic lines. 

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NOT OK - Replace modular package (32-33-31).
OK - Check for hydraulic pressure reaching NG main actuator. IF -
OK - Check for hydraulic pressure and flow downstream from nose gear modular package. IF -OK - Check NG shock strut servic-ing precharge and for tire marks on forward door hinge torque tube. IF -NOT OK - Service shock strut and check for free operation. 
OK - Change nose gear main actuator (32-33-11). 

NOT OK - Flush or replace hydraulic lines.
NOT OK - Check for kink or obstruction in lines to actuator. IF -

OK - Check hydraulic pressure reducing modular package. IF -

OK - Replace modular package (32-33-31). 

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
_______WARNING: THIS CAN BE A VERY DANGEROUS CONDITION. IF THE NOSE LANDING GEAR IS NOSE LANDING GEAR RETRACTS, INJURY OR DEATH TO PERSONS AND DAMAGE TO NOT LOCKED IN THE DOWN POSITION, IT CAN INADVERTENTLY RETRACT. IF THE EQUIPMENT CAN OCCUR. IS ILLUMINATED. THE LANDING GEAR CONTROL LEVER IS IN THE DN POSITION. THE AIRPLANE IS ON THE GROUND AND THE RED WARNING LIGHT FOR THE NOSE LANDING GEAR 

GEAR RETRACTS, INJURY OR DEATH TO PERSONS AND DAMAGE TO EQUIPMENT CAN6. Use ropes or a long pole to put a chock in FRONT of the nose landing gear tires, if chocks are not already installed. THE CHOCKS IN FRONT OF THE NOSE LANDING GEAR TIRES. IF THE NOSE LANDING WARNING: DO NOT LET YOURSELF OR ANOTHER PERSON BE UNDER THE AIRPLANE WHEN YOU PUT WARNING: MAKE SURE THE GROUND LOCK ASSEMBLIES ARE INSTALLED ON ALL THE MAIN 5. If the ground lock assemblies are not installed on all the main landing gear, install the ground lock assemblies (AMM 32-00-01/201). one set of MAIN LANDING GEAR tires. 4. Make sure that chocks are secured against the front and back of at least 3. Make sure the parking brake is set. installed, do the steps that follow: If you are not sure if the ground lock assembly for the nose landing gear is WARNING: MOVEMENT OF THE AIRPLANE CAN CAUSE THE INADVERTENT RETRACTION OF THE 2. Make sure that the configuration of the hydraulic system is NOT changed. 1. Stop all maintenance and other activities that can cause the airplane to move, WARNING: DO NOT LET YOURSELF OR ANOTHER PERSON BE UNDER THE AIRPLANE TO CHECK_______ _______ _______ _______ NOTE: Do not put chocks behind the nose landing gear tires. It will not help prevent an inadvertent retraction of the nose landing gear. COULD RETRACT AND CAUSE INJURIES TO PERSONS AND DAMAGE TO EQUIPMENT. LANDING GEAR. WITHOUT THE GROUND LOCK ASSEMBLIES, THE LANDING GEAR NOSE LANDING GEAR IF IT IS NOT IN THE LOCKED POSITION AND THE GROUND INJURY OR DEATH TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR. LOCK ASSEMBLY IS NOT INSTALLED. IF THE NOSE LANDING GEAR RETRACTS, NOTE: If the hydraulic power is supplied, leave it on. If the hydraulic power is not supplied, leave it off. FOR THE GROUND LOCK ASSEMBLY. IF THE NOSE LANDING GEAR RETRACTS, INJURY OR DEATH TO PERSONS AND DAMAGE TO EQUIPMENT CAN OCCUR. ____ OCCUR. shake, or bounce. ____ 

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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737-300/400/500MAINTENANCE MANUAL
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