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 (a) Safety the bolts with a lockwire.
 S 424-055-C00
 (12) Align the flange gasket between the flange of the 9th-stage bleed tube and valve flange.
 (a) Tighten the nuts to 55-70 pound-inches (6-8 Newton meters).
 S 434-049-C00
 (13) Tighten the bolts that hold the 9th-stage air tube to the compressor case to 55-70 pound-inches (6-8 Newton meters).
 (a) Safety the bolts with a lockwire.
 S 434-050-C00
 (14) Tighten the bolts that attach the clamps (2 locations) on the 9th-stage bleed tube to 55-70 pound-inches (6-8 Newton meters).
 (a) Safety the bolts with a lockwire.
 S 434-051-C00
 (15) Tighten the bolts that hold the valve flange to the 5th-stage bleed port on the compressor case to 55-70 pound-inches (6-8 Newton meters).
 (a) Safety the bolts with a lockwire.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
S 434-058-C00
 (16)
 ENGINES PRE-CFMI-SB 72-642; Install the heat shield to cover the air manifold tube.

 S 794-042-C00

 (17)
 Do a leak test for the clearance control valve as follows (Fig. 402):

 (a)  Attach a pressure test hose to the drain outlet for the HPT
 clearance control valve and right VSV actuator seal and shroud
 with an adjustable hose clamp.
 NOTE: The drain outlet for the HPT clearance control valve and____
 right VSV actuator seal and shroud is found at the rear
 drain assembly.
 (b)  Connect a dry air or nitrogen source to the hose fitting for
 the pressure test.
 (c)  Apply a pressure of 20-25 psi (138-173 kPa) to the hose
 fitting.
 (d)  Shut off the air or nitrogen supply when you have the correct
 pressure.
 (e)  Monitor the pressure for two minutes.
 NOTE: The pressure is permitted to decrease a maximum of____
 10 psi (70 kPa).
 (f)  If the pressure decreases more than 10 psi (70 kPa), make sure
 the fuel manifold bolts are tightened to the correct torque
 value.
 NOTE: This step applies if all connections between the____
 junction plate and VSV actuator head and rod end shrouds
 are not the source of the leakage.

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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
RIGHT VSVRIGHT VSV ACTUATORBELLCRANKACTUATOR SEALSEE A ASSEMBLYAND SHROUD DRAIN
SEE  B  SEE  C  D 
CONTROL VALVE HPT CLEARANCE 
FWD 
VSV ACTUATOR SEAL DRAIN AND RIGHT AND SHROUD DRAIN CONTROL VALVE HPT CLEARANCE  G-M56-MM-0187(1)-00-B(M) A VSV ACTUATOR SEAL DRAIN AND RIGHT AND SHROUD DRAIN CONTROL VALVE HPT CLEARANCE 

REAR DRAIN ASSEMBLY
FWD
B

High Pressure Turbine (HPT) Clearance Control Valve Leak Test Connections Figure 402 (Sheet 1)
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú

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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(15 LOCATIONS) SCREW STRUT 6 O'CLOCK FIREWALL HERE SEALANT APPLY THE UPPER SEAL  APPLY THE RING EXTENSION INNER HERE SEALANT FAIRING HALF STRUT RIGHT 6 O'CLOCK FRAME STRUT 6 O'CLOCK FAN 
PLATE JUNCTION  INNER RING EXTENSION  LOWER SEAL  APPLY THE HERE SEALANT  RING EXTENSION OUTER 
　
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