(2)
Loosen checknut and adjust rod end until rod end bolt fits freely with rigging pin S/B-1 installed.
500
Feb 20/88 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 27-62-31 Page 401
G40041
Speed Brake Lever Actuator Installation 531
27-62-31 Figure 401 Aug 15/71
Page 402
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
(3)
Install rod end bolt with washer under bolt head. Secure bolt with washer and locknut.
(4)
Tighten checknut on rod end.
(5)
Ensure that rod end is visible in inspection hole of control rod.
C. Fully extend lever actuator by applying 28 volts dc to pins 1 and 7 on actuator. Pins on actuator are numbered. Use pin 1 as ground.
D. Position lever actuator in airplane and install mounting bolt attaching actuator to structural bracket.
E. Secure mounting bolt with washer, nut, and cotter pin.
F. Manually rotate lever brake forward until internal stop is contacted.
G. Adjust lever actuator rod end fitting by:
(1)
Loosen lever actuator rod end checknut.
(2)
Adjust lever actuator rod end fitting until retaining bolt can be inserted through lever brake and lever actuator.
NOTE: To facilitate alignment, lever brake assembly may be backed off from stop a distance equal to one-half turn of lever actuator rod end.
(3)
Insert retaining bolt.
(4)
Finger tighten lever actuator rod end checknut.
(5)
Remove retaining bolt and disconnect lever actuator from lever brake.
(6)
Loosen lever actuator rod end checknut, and screw lever actuator rod end in one complete turn.
(7)
Tighten checknut and bend lock washer tabs.
H. Manually rotate lever brake to align lever brake and lever actuator rod end. Install retaining bolt and secure with washer, nut, and cotter pin.
I. Remove rigging pin SB-1.
J. Retract actuator by applying 28 volts dc to pins 1 and 3 on actuator.
500
Aug 15/72 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 27-62-31 Page 403
K. Manually operate speed brake control lever through full travel to check for binding or rough operation.
L. Install bonding jumper.
(1)
Install attaching bolt. Secure with washers and locknut.
(2)
Check that maximum resistance of bonding jumper is 2.5 milliohms.
M. Install electrical connector.
N. Test lever actuator. Refer to Speed Brake Lever Actuator - Adjustment/Test.
O. Close lower fuselage nose compartment door.
500
27-62-31 Page 404 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Feb 15/68
SPEED BRAKE LEVER ACTUATOR - ADJUSTMENT/TEST
1. Speed Brake Lever Actuator Test
A. Equipment and Materials
(1) Antiskid - Autobrake - Auto Speed Brake Tester - F80129, or equivalent
B. Prepare Speed Brake Lever Actuator for Test
NOTE: Weight of airplane must be on landing gear for this test.
(1)
Provide electrical power.
(2)
Provide system A hydraulic power. Refer to 27-62-0, Speed Brake Control System -Maintenance Practices.
(3)
Place both inboard and outboard antiskid switches to ON. Switches are located on center instrument panel.
(4)
On circuit breaker panel P6 ensure that the following circuit breakers are closed:
(a)
INDICATOR LIGHTS
(b)
FLIGHT CONTROL VALVES
(c)
SPOILER SHUTOFF VALVES
(d)
AUTO SPEED BRAKE
(e)
ALL ANTISKID
(5)
Set aileron trim to neutral and center captain's aileron control wheel.
(6)
Place engine No. 1 and 2 thrust levers in idle position.
531
Feb 15/73 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 27-62-31 Page 501
C. Test Speed Brake Lever Actuator
(1)
Move speed brake control lever from DOWN to ARMED detent.
(2)
Check that ARMED light on center panel is illuminated.
(3)
Check that no ground spoiler response occurs and flight spoilers do not raise beyond 1-1/2 degrees.
(4)
Remove protective cover at test receptacle on antiskid control shield. Antiskid control shield is located on E3-2 shelf in electrical equipment area. Install antiskid - autobrake -auto speed brake tester. Install antiskid - autobrake - auto speed brake tester (Fig. 501).
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