L85952
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27-62-00
ALL ú ú 01 Page 103 ú Mar 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
TROUBLE PROBABLE CAUSE ISOLATION PROCEDURE REMEDY
Speedbrakes do do not operate Ground spoilers as speed brakes do not operate Flight spoilers extension, or not retain set position No spoiler direction only motion in one slipping mechanism defective defective defective speedbrake body interlock valve is control valve is cable is bad Ground spoiler Ground spoiler Ground spoiler interlock valve Spoiler mixer is Ratio changer input rod disconnected Lever brake Insufficient or wheel well Broken or disconnected cable cable tension defective if drum can be leaking control valve. (AMM 27-62-61/501). (AMM 27-62-51/501). Check for damaged or Check operation of interlock valve Check operation of interlock valve cable input rod movement. Move control wheel and check for ratio changer Check cable system. (AMM 27-62-00/501). rotated. Check cable tension forward drum by-hand. Lever brake mechanism is attempting to rotate lever brake mechanism by Check locking action of (AMM 27-62-21/401). necessary Adjust or replace Rig speedbrake (AMM 27-62-41/401). (AMM 27-62-61/401). (AMM 27-62-51/401). necessary Replace valve linkage as cable as necessary Adjust or replace Replace interlock valve and valve (AMM 27-61-31/401). necessary. mixer Replace spoiler Repair or replace components as (AMM 27-62-00/501). necessary. cables mechanism as Adjust cables as
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
27-62-00
ALL ú ú 01 Page 104 ú Mar 12/01
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
A 737-300/400/500MAINTENANCE MANUAL
TROUBLE PROBABLE CAUSE ISOLATION PROCEDURE REMEDY
One ground Defective ground Operate ground spoiler and Replace defective
spoiler does not spoiler actuator check for external leadage actuator
operate correctly. overheating. or for evidence of AMM 27-62-94/401). (AMM 27-62-71/401
Ground spoiler Defective ground Check actuator linkage for Replace actuator
float or actuator linkage spoiler actuator loose, broken, or worn parts. or actuator AMM 27-62-94/401). or AMM 27-62-82/401 (AMM 27-62-71/401, necessary linkage as
For automatic Speedbrake lever Operate automatic Adjust or replace
actuation, brake mechanism speedbrake system mechanism as
speedbrake control is defective, or (AMM 27-62-00/501). necessary
lever and system out of adjustment Check if electric actuator (AMM 27-62-21/501).
do not actuate or operates, but lever brake
do not actuate slips.
fully UP or DOWN
(force required Speedbrake arming Electric actuator does Adjust or replace
to rotate control switch is bad not operate. arming switch
lever not or out of (AMM 27-62-34/501).
excessive). is defective adjustment Speedbrake lever electric actuator (AMM 27-62-31/401). Replace actuator
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