(2)  
Protractor - F52485-500 or 4MIT65B80307-1

 (3)  
Protractor Adapter (Thrust Lever) - F72952-15

 (4)  
Hydraulic test bench which can supply 20 gpm at 3000 psi
 (AMM 29-15-00/201).

 (5)  
Actuator bars for the proximity sensors:

 (a)  
Material: 1020 steel per MIL-S-7952, 15-5PH steel, 17-4PH steel per AMS 5643, Permalloy - HYMU (carpenter steel) or Molly Permalloy (Allegheny Ludlum).

 (b)  
Size: For rectangular sensors - 1.5 x 0.75 x 0.05 inches. For round sensors - 1.0 x 1.0 x 0.05 inches.

 (6)  
Deactuator bars for the proximity sensors:

 (a)  
Material: 5052, 6061, 7076, or 2024 aluminum or sheet copper.

 (b)  
Size: For rectangular sensors - 1.5 x 0.75 x 0.05 inches. For round sensors - 1.0 x 1.0 x 0.05 inches.

 C. References
 (1)  
AMM 07-11-11/201, Jack Airplane

 (2)  
AMM 24-22-00/201, Manual Control

 (3)  
AMM 27-51-00/201, Trailing Edge Flap System

 (4)  
AMM 27-62-04/401, Engine Throttle Switches

 (5)  
AMM 29-15-00/201, Hydraulic Systems A, B, and Standby

 (6)  
AMM 31-26-11/401, Thrust Lever Actuated Landing Gear Warning Switches

 (7)  
AMM 31-26-12/401, Flap Landing Warning System

 (8)  
AMM 31-26-23/401, Flap Takeoff Warning Switch

 (9)  
AMM 32-00-01/201, Ground Lock Assemblies

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A
737-300/400/500MAINTENANCE MANUAL
 (10)
 AMM 34-48-00/201, Low Range Radio Altimeter System

 (11)
 AMM 34-48-03/501, Low Range Radio Altimeter System

 D. Access
 (1)  Location Zone
 101/102 Control Cabin
 204 Nose Landing Gear
 310/410 Main Landing Gear

 E. Prepare to Test (airplane on jacks)
 NOTE: You must do these steps before each individual test.
____ S 865-296
 WARNING: MAKE SURE YOU INSTALL THE GROUND LOCK ASSEMBLIES IN ALL LANDING
_______ GEAR. ACCIDENTAL RETRACTION OF THE LANDING GEAR CAN CAUSE INJURY TO PERSONS AND DAMAGE TO EQUIPMENT.
 (1)  
Make sure you install the ground lock assemblies in all landing gear (AMM 32-00-01/201).

 S 585-042

 (2)  
Lift the airplane on jacks until all tires are off the ground (AMM 07-11-11/201).

 NOTE: When you lift the airplane on jacks, the air/ground squat
____ switches get put into the air mode. This stops the operation of the takeoff warning (intermittent horn) while you do the landing warning (continuous horn) tests.
 S 865-043
 (3)  
Supply electrical power (AMM 24-22-00/201).

 S 865-353

 (4)  
Make sure these systems are operational:

 (a)  AMM 34-48-03/501, Low Range Radio Altimeter System
 S 865-045
 (5)  Make sure these circuit breakers are closed:
 (a)  On the load control center - right panel, P6: 1) LND GR AIR/GND RELAY & LTS 2) LNG LATCH AND PRESS WARN 3) MASTER WARN & CONT 4) AURAL WARN 5) ANTI-SKID FAIL WARN & PARK BK
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A 737-300/400/500MAINTENANCE MANUAL
 S 865-047
 (6)  
Put the SPEED BRAKE lever on the control stand in the DOWN position.

 S 485-048

 (7)  
With the thrust levers at the idle position, put the protractor with the adapter in its position on the thrust levers.

 (a)  Set the protractor to 0 degrees (Fig. 501).
 NOTE: If you use the Range Check on the FMC to measure the
____ thrust lever movement, follow the instructions at the start of this procedure.
　
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