CONTROL
AIR/GROUND PROXIMITY
LEVER
SWITCHES SYSTEMS 1 & 2
POSITION
LANDING GEAR PROX SWITCHES
LANDING GEAR
SYSTEMS 1 & 2
ALTN EXTENSION
LANDING GEAR DOOR PROXLANDING GEAR GEAR
LANDING
SWITCHES SYSTEMS 1 & 2SELECTOR VALVE LIGHTS
STEERING
LANDING GEAR CONTROL
ELECTRONICS UNIT
AURAL
TILLER
LEVER MODULE
PROXIMITY SWITCHESRUDDER PEDALS TO LEFT ANDSTEERING RIGHT MAININTERCONNECTION LANDING GEAR LANDING GEAR POSITIONAND NOSE GEAR INDICATING AND WARNING
WARNING
LEGEND
POSITION INDICATING AND WARNINGSYSTEM PRESSUREOLEO
AIR/GROUND FUNCTIONSNITROGENLANDING GEAR STATUSSYSTEM RETURNLANDING GEAR DOOR STATUSMETERED PRESSURE BRAKE SYSTEM
AUTOBRAKE/ANTISKID SYSTEM
NOSE WHEEL
STEERING BRAKE TEMP MONITOR UNIT

L/R EICAS COMPUTER
A
FWD
B
C
1
1
AIRPLANES WITH BRAKE TEMPERATURE MONITORING SYSTEM
Landing Gear Systems Simplified Schematic
Figure 1 (Sheet 1)

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757
MAINTENANCE MANUAL

123
04 RIGHT HYDRAULIC
FIRST
PNEUMATICOFFICERS PRESS
PRESSUREPEDALS POWER SYSTEM PSI X 1000
ACCUMULATOR CAPTAINS CHARGINGPEDALS VALVE
LEFT NORMAL RIGHT NORMALBRAKE METERING
BRAKE METERINGVALVE AUTOBRAKE VALVE VALVE MODULE F/O'S PEDALS INERTIAL
FWD
AUTOBRAKE/
ARE SIMILAR REFERENCE
ANTISKID CONTROL
TO CAPTAIN'S SYSTEM RUDDER PEDALS LEFT
RIGHT AUTOBRAKEAUTOBRAKESHUTTLE VALVE
SHUTTLE VALVE PARKING BRAKE
VALVE
LEFT NORMAL RIGHT NORMALANTISKID ANTISKID
PARK
VALVE MODULE  VALVE MODULE
BRAKE
APL
NOSE
ON

BRAKE SYSTEM
LEFT HYDRAULICPA
POWER SYSTEM
R
K
B
R
APL
NOSE
A
UP
K
ALTERNATE BRAKESELECTOR VALVE
E
STAB TRIM
LEFT ALTERNATE RIGHT ALTERNATE
BRAKE METERING BRAKE METERING
VALVE VALVE

CONTROL STAND ALTERNATE RIGHT
LEFT
BRAKE LEFT RIGHT ANTISKID
ANTISKID
METERING ALTERNATE ALTERNATE SHUTTLE
SHUTTLE
VALVES ANTISKID CONT ANTISKID CONT VALVE
VALVEVALVE MODULE VALVE MODULE MODULE
MODULENORMAL
ANTI SKID1
2 3 4
A
5

6 7
8 B
BRAKE
LEFT MAIN RIGHT MAINLANDING GEAR LANDING GEAR
TEMPERATURE
MONITOR SYSTEM
C
1
1 AIRPLANES WITH BRAKE TEMPERATURE MONITORING SYSTEM
Landing Gear Systems Simplified Schematic
Figure 1 (Sheet 2)

 32-00-00
 ALL  ú ú 03 Page 3 ú Jan 28/02
 
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757 MAINTENANCE MANUAL
 LANDING GEAR SHOCK STRUT INNER CYLINDER - INSPECTION FOR CHROME PLATE CORROSION
_______________________________________________________________________________
 1.  General
_______
 A.  This procedure has two parts. The first is an inspection of the shock strut inner cylinder for chrome cracking or chipping. The second part is to repair cracked chrome on the inner cylinder. There is no standard repair for chipped off chrome. Chrome cracking is a different condition then chrome chipping. If the chrome has chipped, bubbled, lifted, or if the base metal has been exposed there is no standard repair.
 B.  Chrome plateing on large diameter parts will show very small and narrow lines that look like cracks. These lines (microcracks or chicken-wire cracks) naturally occur when the chrome plate was initially applied on the base metal. When you look at these parts in dim light or with a light source angled to the surface for the inspection, you will see these lines.
 TASK 32-00-03-206-001
　
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