(b)
Install mounting bolts attaching rod ends to quadrant guard.
(5)
Install cargo compartment ceiling panels.
(6)
Determine if there is any further need for pneumatic, hydraulic or electrical power on airplane; if not, shut down sources.
2. Main Gear Manual Extension System Test
A. Equipment and Material
(1)
Gear Ground Lock Assembly (Ref 32-00-01)
(2)
Spring Scale -
(a)
Minimum 20-pound capacity (Airplane on gear)
(b)
Minimum 60-pound capacity (Airplane on jacks)
B. Test Manual Extension System (Airplane on Jacks)
(1)
Jack airplane until all tires clear ground (Ref Chapter 7).
(2)
Connect external electrical power supply.
(3)
Install gear ground lock assembly on both main landing gears being tested (Ref 32-00-01).
(4)
Pressurize hydraulic system A (Ref 29-11-0 MP).
(5)
On airplanes with inflatable-type wheel well seal, pressurize pneumatic manifold.
(6)
Check that all circuit breakers on landing gear circuit breaker panel (P6) are closed.
(7)
Put the control level in the off position.
(8)
Attach the spring scale to the manual extension T handle of the left landing gear.
(a)
Make sure the load to start the handle from the seat has a minimum of 6.5 pounds.
(b)
Make sure the full travel of the T handle is 14.4 to 16.1 inches.
(c)
Make sure the load during full travel of the T handle is not more than 18.0 pounds.
NOTE: The T handle must be pulled upward and forward when you measure the load.
(d)
Release the T handle.
(e)
Make sure the T handle goes back to its stowed position freely.
(9)
Attach the spring scale to the manual extension T handle of the right landing gear.
(a)
Make sure the load to start the handle from the seat has a minimum of 6.5 pounds.
(b)
Make sure the full travel of the T handle is 14.4 to 16.1 inches.
(c)
Make sure the load during full travel of the T handle is not more than 18.0 pounds.
NOTE: The T handle must be pulled upward and forward when you measure the load.
(d)
Release the T handle.
(e)
Make sure the T handle goes back to its stowed position freely.
(10)
Remove gear ground lock assembly from main landing gear being tested (Ref 32-00-01).
(11)
Place landing gear control lever in UP position to retract main gear being tested to up and locked position. Place control lever in OFF position. Maintain hydraulic system A pressure at 3000 psi.
CAUTION: CHECK THAT LANDING GEAR CONTROL LEVER IS PLACED IN OFF POSITION WHEN OPERATING MANUAL EXTENSION SYSTEM. IF MANUAL EXTENSION HANDLE IS HELD IN ANY EXTENDED POSITION AND CONTROL LEVER IS MOVED TO UP POSITION, SYSTEM CABLE FEEDBACK WILL CAUSE MANUAL EXTENSION HANDLE TO SNAP BACK FORCIBLY INTO V-SLOT.
(12)
Open manual extension access door.
(13)
Attach spring scale to manual extension handle of gear being tested.
(14)
Pull upward and forward on manual extension handle with spring scale for full travel of approximately 14.4 to 16.1 inches.
(a)
Check that force required to release main gear from up and locked position does not exceed 60 pounds.
NOTE: The handle must be pulled upward and forward when you measure the load.
(b)
Check that main gear free falls to down and locked position as evidenced by green indicator light on pilots' landing gear panel or that red marks on main gear side strut visual indicator align within士0.03 inch.
(15)
Place control lever in UP position to retract main gear to up and locked position. Place control lever to OFF position.
(16)
Depressurize hydraulic system A.
(17)
Repeat step (10). Results should be same.
(18)
Repeat steps (10) thru (13) for opposite gear.
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Aug 01/94 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 32-34-0 Page 503
Main Gear Manual Extension System 511
32-34-0 Figure 501 (Sheet 1) Feb 20/93
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508 Main Gear Manual Extension System
Feb 20/93 Figure 501 (Sheet 2) 32-34-0
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