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mph
182 kts / 210
mph
182 kts / 210
mph
1000-1213 With ASC 266 182 kts / 210
mph
195 kts / 225
mph
182 kts / 210
mph
1000-1213 With ASC 190 195 kts / 225
mph
195 kts / 225
mph
195 kts / 225
mph
1214 and
subsequent
Production 195 kts / 225
mph
195 kts / 225
mph
195 kts / 225
mph
OPERATING MANUAL
2A-32-00 PRODUCTION AIRCRAFT SYSTEMS
Page 8
January 31/02
Revision 6
B. Nose Strut Servicing
Recommended nose strut servicing is shown in the following table.
Service Temp:
Cold Day Service
(-40° F / -40° C)
Std Day Service
(70° F / 21° C)
Hot Day Service
(110° F / 43° C)
Piston Extension
(inches)
Strut Pressure (psig)
13.04 188 224 246
11.24 220 264 289
9.46 260 312 341
8.34 300 365 399
7.34 350 419 457
6.54 400 475 518
5.84 450 537 586
5.30 500 596 651
4.94 550 644 703
4.54 600 706 770
4.24 650 761 830
3.94 700 825 900
3.64 750 901 982
3.44 800 959 1045
3.24 850 1025 1117
3.04 900 1100 1198
2.94 950 1142 1244
2.84 1000 1187 1293
2.74 1050 1236 1346
2.64 1100 1289 1403
2.44 1150 1408 1533
2.34 1200 1477 1607
NOTE:
(1) Piston extension is measured from bottom surface
of gland nut to black circumferential line on piston /
axle.
(2) This table is used only for checking and adjusting
strut service pressure and should not be used for full
strut servicing.
(3) Interpolate between temperatures for proper
service pressure.
OPERATING MANUAL
PRODUCTION AIRCRAFT SYSTEMS 2A-32-00
Page 9
January 31/02
Revision 6
Main Landing Gear Components
Figure 2
OPERATING MANUAL
2A-32-00 PRODUCTION AIRCRAFT SYSTEMS
Page 10
January 31/02
Revision 6
Main Landing Gear Structure
Figure 3
OPERATING MANUAL
PRODUCTION AIRCRAFT SYSTEMS 2A-32-00
Page 11
January 31/02
Revision 6
Nose Landing Gear Components
Figure 4
OPERATING MANUAL
2A-32-00 PRODUCTION AIRCRAFT SYSTEMS
Page 12
January 31/02
Revision 6
Ground Service Valve
Figure 5
OPERATING MANUAL
PRODUCTION AIRCRAFT SYSTEMS 2A-32-00
Page 13
January 31/02
Revision 6
Landing Gear Safety Pins
Figure 6
OPERATING MANUAL
2A-32-00 PRODUCTION AIRCRAFT SYSTEMS
Page 14
January 31/02
Revision 6
2A-32-30: Extension and Retraction System
1. General Description
Landing gear extension and retraction is controlled with the landing gear lever on
the copilot side of the center instrument panel. The landing gear lever is
connected to a mechanical linkage behind the instrument panel that extends to
the landing gear selector valve mounted in the unpressurized nose section. The
linkage is shown in Figure 7. Moving the landing gear handle mechanically opens
and closes ports in the selector valve, routing Combined system hydraulic
pressure to actuators for the main and nose gear and doors. If Combined system
pressure is not available, but hydraulic lines and fluid quantity are intact, Utility
system pressure will operate the landing gear using normal control linkages. If no
hydraulic pressure is available, but system lines remain intact, the landing gear
may be lowered by pressurizing the hydraulic lines with nitrogen gas stored in an
emergency bottle located in the nose wheel well. The emergency extension
system may only be used once and cannot retract the landing gear.
A nutcracker (squat) switch is installed on each landing gear. The nutcracker
switches are closed when the aircraft is on the ground and the pneumatic-oleo
struts are compressed with the aircraft weight. For this reason the switches are
sometimes referred to as weight-on-wheels switches. The switches provide
sensing information to aircraft systems / sub-systems that operate only in the air
or only on the ground.
To facilitate maintenance on the landing gear or on components located in the
wheel wells, the Auxiliary hydraulic system may be used to operate the landing
gear system and/or the landing gear doors. A ground service valve, located inside
a hinged panel near the nose wheel well, is positioned and held with safety
locking pin to port Auxiliary system pressure to operate the doors only. If the
aircraft is raised on jacks, the Auxiliary system may also be used to raise and
lower the landing gear.
2. Description of Subsystems, Units and Components
A. Landing Gear Control Panel
　
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