(4)
Lockwire quadrant retaining bolt to forward drum quadrant.
C. Adjust speed brake control lever.
(1)
Place speed brake control lever in DOWN position. Ensure that lever latch is in detent on control stand.
(2)
Check that rigging pin SB-1 can be freely installed through speed brake forward drum quadrant into structure. If rigging pin cannot be freely installed accomplish the following steps:
(a)
Remove control stand access panel located on left side, forward and below the stabilizer trim wheel.
(b)
Disconnect upper end of lower control rod from idler link.
(c)
Loosen checknut and adjust rod end until rod end bolt fits freely with rigging pin SB-1 installed.
(d)
Install rod end bolt with washer under bolt head. Secure bolt with washers and locknut.
(e)
Ensure that rod end threads are visible in control rod inspection hole.
(f)
Replace control stand access panel.
500
Feb 15/70 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 27-62-21 Page 405
D. Attach speed brake lever actuator to speed brake lever brake.
(1)
Manually rotate lever brake forward until internal stop is contacted.
(2)
Fully extend lever actuator by applying 28 volt dc to pins 1 and 7 on actuator. Pins on actuator are numbered. Use pin 1 as ground.
(3)
Adjust lever actuator rod end fitting as follows:
(a)
Loosen lever actuator rod end checknut.
(b)
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.
(c)
Insert retaining bolt.
(d)
Finger tighten lever actuator rod end checknut.
(e)
Remove retaining bolt and disconnect lever actuator from lever brake.
(f)
Loosen lever actuator rod end checknut and screw lever actuator rod end in one complete turn.
(g)
Tighten checknut and bend lock washer tabs.
(4)
Manually rotate lever brake to align lever brake and lever actuator rod end. Install retaining bolt and secure with washer, nut, and cotter pin.
(5)
Remove rigging pin SB-1.
(6)
Retract actuator by applying 28 volts dc to pins 1 and 3 on actuator.
(7)
Manually operate speed brake control lever through full travel to check for binding or rough operation.
500
27-62-21 Page 406 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. Aug 15/68
E. Connect speed brake control cables to speed brake forward drum. (See figure 402.)
(1)
Install rigging pins SB-1 and SB-2. (See figure 403.)
(2)
Attach cables and cable retainers to quadrant.
(3)
Connect turnbuckles and tension cables to value shown in temperature-tension table on figure 402.
(4)
Remove rigging pins SB-1 and SB-2.
(5)
Operate speed brake control lever through one complete cycle.
(6)
Check system for proper rigging by inserting rigging pins SB-1 and SB-2.
(7)
Check that cable tension in cables is within values shown on temperature -tension table. Tension in cables should be balanced.
(8)
Remove rigging pins SB-1 and SB-2.
(9)
Install turnbuckle locking clips.
F. Adjust control lever detents.
(1)
Place speed brake control lever in DOWN detent. Ensure that lever latch is in detent on control stand.
(2)
Check that center of DOWN detent mark on control stand indicator plate aligns with indicator on aft face of control lever. If not within limits, loosen indicator plate attaching screws and move plate until it aligns with indicator on speed brake lever. Tighten attaching screws.
(3)
Remove control stand access panel located on left side, forward and below stabilizer trim wheel.
506
Aug 15/69 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. 27-62-21 Page 407
G38960G38963
Speed Brake Control System Cable Locations and Cable Tension 500
27-62-21 Figure 402 May 15/81
Page 408
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
500 Spoiler Mixer and Ratio Changer Rigging Pin Location
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