(h)
Check spoiler rotation using control surface protractor. 1) Check that ground spoilers No. 4 and 5 are 60 +2 degrees up from full down
position. 2) Check that ground spoiler No. 5 is within 2 degrees of ground spoiler No. 4. 3) Check that flight spoiler No. 2 is 39 +3 degrees up from full down position. 4) Check that flight spoiler No. 7 is within 3 degrees of flight spoiler No. 2.
(i)
Return speed brake control lever to DOWN position.
(j)
Check that flight and ground spoilers rotate to down position.
(4)
Test speed brake lever actuator operation.
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NOTE: Airplane weight must be on landing gear during this test.
(a)
Ensure that following circuit breakers are closed: ALL INDICATOR LIGHTS, FLIGHT CONTROL VALVES, SPOILER SHUTOFF VALVES, AUTOMATIC SPEED BRAKE, and ALL ANTISKID.
(b)
Remove protective cover at test connector J2 on antiskid control shield. Antiskid control module is located on E3-2 shelf in electrical equipment area. Install antiskid -autobrake - auto speed brake tester.
NOTE: Before installing, check that all switches on tester are off.
(c)
Move speed brake control lever from DOWN to ARMED detent.
(d)
Set up tester as follows: 1) Place master switch to ON position. 2) Place WHEEL SPEED LO, LI, RO and RI switches in OFF position. 3) Set rotary VELOCITY potentiometer to a position greater than 62 knots. 4) Place WHEEL SPEED velocity switch in VEL position.
(e)
Place RI and RO switches in ON position. Check that all spoilers extend.
(f)
Install control surface protractor and thrust lever adapter on thrust lever. Move No. 1 thrust lever 12.5 +1 degrees forward from idle position and check that: 1) All spoilers return to full down position. 2) Speed brake control lever returns to DOWN position.
(g)
Press speed brake indicator test switch 3.
NOTE: The RO and RI switches referred to are located in tester WHEEL SPEED section. Disregard all lamps on tester during test.
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(5) Test speed brake takeoff warning and arming switches and auto brake off ramp switch (Ref 31-26).
D. Restore Airplane to Normal
(1)
Remove systems A and B hydraulic power (Ref 27-62-0).
(2)
Remove electrical power if no longer required.
(3)
Remove tester and replace protective cover on test connector J2.
(4)
Close lower fuselage nose access door.
(5)
Replace left forward nose wheel well access panel.
(6)
Remove control surface protractor and thrust lever adapter.
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Oct 20/92
SPEED BRAKE LEVER ACTUATOR - REMOVAL/INSTALLATION
1. Equipment and Materials
A. Ohmmeter - scale 0 to 5 milliohms
B. Electrical power supply, 28 volts dc
C. Rigging Pins Kit - F70207-3, -52, -61, or -84:
REF NO. F70207-( ) DIAMETER (INCHES) LENGTH (INCHES) FUNCTION
S/B-1 -11 0.309-0.311 6.7 +0.25 Speed Brake Forward Drum
2. Prepare Speed Brake Lever Actuator for Removal
A. Depressurize hydraulic systems A and B (Ref 27-62-0 MP).
B. Open AUTO SPEED BRAKE circuit breaker on circuit breaker panel P6.
C. Place speed brake control lever in DOWN position.
D. Open lower fuselage nose compartment door.
3. Remove Speed Brake Lever Actuator
A. Disconnect electrical connector from lever actuator (Fig. 401).
B. Remove bonding jumper.
C. Remove bolt connecting lever actuator to lever brake.
D. Remove bolt connecting lever actuator to structure support.
E. Remove lever actuator from airplane.
4. Install Speed Brake Lever Actuator
A. Clean area of lever actuator and airplane structure where bonding jumper attaches (Fig. 401).
B. Insert rigging pin S/B-1. If rigging pin S/B-1 cannot be freely inserted, accomplish thee following steps:
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