(4)
Open the right thrust reverser (AMM 78-31-00/201).
F.
Procedure
S 825-044-N00
WARNING: DO NOT PUT YOUR FINGERS NEAR THE LINKAGES, UNISON RINGS, OR
_______
LEVERS WHEN YOU OPERATE THE STATOR VANE SYSTEM. YOU CAN CAUSE
INJURY TO YOUR HANDS IF YOU DO.
CAUTION:_______DO THIS ADJUSTMENT PROCEDURE WITH PRECISION. IF YOU DO NOT,
THE HPC BLADE FATIGUE CAN INCREASE, INTERNAL ENGINE DAMAGE CAN
OCCUR, OR POSSIBLE ENGINE FAILURE.
CAUTION: ALWAYS REMOVE THE RIG PINS BEFORE YOU MOVE THE STATOR-VANE
_______
SYSTEM. IF YOU DO NOT DO THIS, DAMAGE TO THE STATOR-VANE
SYSTEM CAN OCCUR.
(1) With a standard crowsfoot and a wrench on the flats of the bellcrank adjacent to the 5th-stage adjuster, do the steps that follow:
CAUTION: MAKE SURE YOU DO NOT PUT TOO MUCH TORQUE ON THE BELLCRANK.
_______ TOO MUCH TORQUE CAN BEND THE BELLCRANK BRACKET WHICH CAN CAUSE A BAD RIGGING.
(a)
Pull down on the wrench until you feel the actuator internal stop of the actuator.
(b)
Push up on the wrench until you are off the actuator internal stop.
(c)
Pull down on the wrench again until you feel the internal stop.
(d)
Hold the bellcrank until the actuator rod is fully extended against the internal stop (vanes open).
(e)
Hold the actuator fully extended against the internal stop with 300-400 pound-inches (33.90-45.19 newton-meters) on the crowsfoot.
(f)
Install the PWA 86344 holder between the jamnut and the top of the actuator housing. 1) Tighten the detail bolt to 8-10 pound-inches (0.904-10130
newton-meters).
NOTE: Do not tighten the detail bolt too much.
____
2) Tighten the detail jamnut with your hand.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
75-31-00
ALL ú ú N01 Page 520 ú Jun 18/99
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
CAUTION: MAKE SURE YOU KEEP THE ACTUATOR ROD FULLY EXTENDED WHEN
_______ YOU INSTALL THE BELLCRANK RIG PIN. IF YOU LET THE ACTUATOR ROD RETRACT, YOU WILL NOT GET AN ACCURATE CHECK. A BAD RIGGING CAN CAUSE A DANGEROUS STABILITY AND EFFECTS ON THE LENGTH OF LIFE.
CAUTION: MAKE SURE THAT THE END OF THE RIG PINS ARE CORRECTLY AND
_______ FULLY INSTALLED. IF YOU DO NOT DO THIS, YOU CAN CAUSE DAMAGE TO THE COMPRESSOR STATOR VANE CONTROL SYSTEM.
(g) Adjust the rod end bearing until you can put the bellcrank rig pin (PWA 86097) into the rig pin slot of the bellcrank arm and into the two holes of the support.
NOTE: You must apply the same torque on the bellcrank when you
____
install the bellcrank rig pin.
(h)
If you can install the bellcrank rig pin, do the adjustment of the unison rings.
(i)
If you cannot install the bellcrank rig pin, do the subsequent steps to adjust the rod end bearing.
S 825-040-N00
(2) If it is necessary, adjust the rod end bearing of the actuator with the steps that follow:
(a)
Remove the PWA 86344 holder.
(b)
Remove the cotter pin from the bellcrank clevis bolt of the rod end bearing. 1) Discard the cotter pin.
(c)
Remove the nut, washer, and bellcrank clevis bolt from the rod end bearing.
(d)
Remove the lockwire and seal from the actuator rod.
(e)
Make the tabs of the key washer straight.
(f)
Loosen the jamnut.
(g)
Remove the rod end bearing.
(h)
Remove the key washer.
(i)
Install a new key washer.
(j)
Lubricate the threads of the rod end bearing with engine oil.
(k)
Install the rod end bearing on the actuator rod.
(l)
Tighten the rod end bearing until the flat surface below the hexagonal is approximately 9/16 inch (14.288 mm) from the flat surface below the actuator rod threads.
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