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75-32-01
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K04171
2.5 BLEED VALVE ACTUATOR
FWD
NUMBER OF TURNS COUNTERCLOCKWISE FROM BOTTOMED PISTON FORWARD (AFTER INITIAL ADJUSTMENT)........ DIMENSION D
DIMENSION B SUBTRACT -INITIAL DIFFERENCE
INITIAL COMPRESSION ADJUSTMENT
C-C
L-B5315 (0697)
2.5 Bleed Valve Actuator Adjustment
Figure 501 (Sheet 7)
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
2.5 BLEED VALVE ACTUATOR
FWD
NUMBER OF TURNS CLOCKWISE FROM INITIAL ADJUSTMENT PISTON FORWARD (AFTER FINAL ADJUSTMENT)............. DIMENSION E
DIMENSION B SUBTRACT -FINAL DIFFERENCE
(NOTE: IF DIMENSION B IS MORE THAN DIMENSION E, SUBTRACT DIMENSION E FROM DIMENSION B TO DETERMINE THE DIFFERENCE.)
FINAL COMPRESSION ADJUSTMENT
L-B5316 (0697)
C-C
2.5 Bleed Valve Actuator Adjustment
Figure 501 (Sheet 8)
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K04174
S 845-085-N00
(6) Connect the hoses from the PWA 49030 or CTE 5100 Hydraulic Pump as follows:
NOTE: If you do not know which Pump hoses to use, see the
____
instructions for hydraulic pump service and operation
(AMM 75-32-01/201).
(a)
Install the PWA 29451 Pump Adapter to the actuator rear
adapter.
(b)
While you hold the rear adapter with a wrench, tighten the Pump Adapter.
(c)
Connect the two elbows to the two pump hoses (pressure and
return).
(d)
Tighten the hoses to the elbows.
(e)
Connect the return hose elbow to the forward adapter.
(f)
While you hold the forward adapter with a wrench, tighten the elbow.
(g)
Connect the pressure hose elbow to the Pump Adapter.
(h)
While you hold the Pump Adapter with a wrench, tighten the
elbow.
S 845-086-N00
(7)
With the power OFF, connect the connector for the PWA 85842 Electrical Control Box to the actuator receptacle.
S 025-087-N00
(8)
Remove the shoulder bolt from the actuator piston shaft as follows:
(a) Remove and discard the cotter pin installed to the piston shaft and bolt.
CAUTION:_______TURN THE SHOULDER BOLT CLOCKWISE TO LOOSEN. THE SHOULDER BOLT HAS LEFT HAND THREADS. DAMAGE CAN OCCUR TO THE SHOULDER BOLT OR THE ACTUATOR IF THE SHOULDER BOLT IS TURNED IN THE INCORRECT DIRECTION. ALSO, HOLD THE HEXAGONAL HEAD OF THE ACTUATOR PISTON SHAFT WHEN YOU LOOSEN THE SHOULDER BOLT.
CAUTION: MAKE SURE THE CRIMPED LOCKING CUP AND RETAINING NUT DO NOT
_______
LOOSEN FROM THE PISTON SHAFT WHEN THE SHOULDER BOLT IS
REMOVED. IF THE RETAINING NUT CHANGES OR LOOSENS, THE
INTERNAL ADJUSTMENT OF THE ACTUATOR CAN BE AFFECTED AND
ACTUATOR OR ENGINE DAMAGE CAN OCCUR.
(b) Hold the piston shaft hex with a wrench and remove the shoulder bolt (left hand thread).
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