(c)
Break lockwire and loosen actuator rod end checknut and remove locking key.
(d)
Rotate the actuator piston rod in one-sixth turn increments to obtain the necessary ground spoiler to flap clearance. Use flats provided on piston rod to turn piston rod.
CAUTION: DO NOT TURN PISTON ROD IF ACTUATOR IS PRESSURIZED.
NOTE: One-sixth rotation of actuator piston rod changes the ground spoiler to flap clearance by 0.093 inch.
(e)
Insert locking keys and tighten actuator rod end checknut to 100-200 pound-inches.
(f)
Pressurize hydraulic system A.
(g)
Lower spoilers, if applicable.
(h)
Check that spoiler to flap clearance is within limits.
(i)
Provide access to actuators.
(j)
Tighten actuator piston rod end checknut to 290 to 410 pound-inches.
(k)
Coat actuator piston rod end threads with corrosion preventive compound.
(l)
Lockwire actuator piston rod end checknut.
(3) Check forward bulb seal between spoiler and foreflap.
(a)
Raise spoiler and remove hydraulic power.
(b)
With flap up, check that both wing upper fixed panel bulb seals are compressed by foreflap 0.15 + ±0.05 inch.
(e)
Measure position of wing bulb seal in relation to wing upper surface.
May 15/81 27-62-12
Page 503
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
(d) Check that spoiler forward bulb seal position in relation to spoiler upper surface aligns with wing bulb seal. Adjust spoiler forward bulb seal, if necessary, by loosening attaching bolts, repositioning seal, and retightening bolts.
(4)
Check aft bulb seal, if installed, between spoiler and foreflap.
(a)
Lower inboard flaps to one unit.
(b)
With spoiler lowered, check that aft bulb seal contacts foreflap for at least 80 per cent of its length with no more than 0.02-inch gap for remainder.
(c)
If necessary, adjust aft bulb seal by shimming.
(5)
Test ground spoilers.
2. Ground Spoiler Test
A. Equipment and Materials
(1)
Control Column Protractor Assembly-4MIT65B80307-1 (Preferred) or F52485-500 (Optional) which is used with the following adapters:
(a)
Aileron Control Wheel Protractor Mount-F72790
(b)
Forward Thrust Lever Protractor Adapter-F72952-2
(2)
Control Surface Protractor Stand Assembly, F71292-17
B. Test Ground Spoiler
(1)
Place flap control lever to FLAP UP position to raise trailing edge flaps.
(2)
Place speed brake control lever in DOWN position.
(3)
Check that ground spoilers are full down.'
(4)
Place speed brake control lever in UP position.
(5)
Check that No. 4 and 5 ground spoilers are raised 60 ±2 degrees.
(6)
Check that ground spoiler No. 4 is within 2 degrees of spoiler No. 5.
C. Restore Airplane to Normal Configuration
(1)
Place speed brake control lever to DOWN position.
(2)
Turn off hydraulic system B pumps No. 1 and 2 and CLOSE hydraulic interconnect valve.
(3)
Determine whether there is any further need for electrical power on the airplane; if not, remove power.
500
27-62-12 Page 504 BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details. May 01/99
NO. 4 AND 5 GROUND SPOILERS - INSPECTION/CHECK
1. General
A. This data consists of illustrations and wear limit charts. No procedure is given in this section for gaining access to permit inspection. For this information, refer to Removal/Installation.
2. No. 4 and 5 Ground Spoilers Wear Limits (Fig 601)
G38875 G38877
504 No. 4 and 5 Ground Spoilers Wear Limits
Aug 15/73 Figure 601 (Sheet 1) 27-62-12
Page 601
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
No. 4 and 5 Ground Spoilers Wear Limits 501
27-62-12 Figure 601 (Sheet 2) Aug 15/73
Page 602
BOEING PROPRIETARY - Copyright . - Unpublished Work - See title page for details.
SPEED BRAKE FORWARD DRUM AND LEVER BRAKE - REMOVAL/INSTALLATION
1. Equipment and Materials
A. Primer - BMS 10-11, type I (Ref 20-30-41)
B. Rigging Pins Kit - F70207-3, -52, -61, or -84:
REF NO. F70207-( ) DIAMETER (INCHES) LENGTH (INCHES) FUNCTION
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