S 416-006-C00
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75-31-01
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
SEE A
CAP END SHROUD ROD END SHROUD HEAD END
VSV ACTUATOR
TUBE DRAIN FWD
RIGHT VSV ACTUATOR
1 LEFT SIDE SIMILAR RIGHT SIDE SHOWN, A 1
Varible Stator Vane (VSV) Actuator Inspection Figure 601
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
VARIABLE STATOR VANE FEEDBACK CABLE - REMOVAL/INSTALLATION
__________________________________________________________
1. General_______
A. This procedure contains two tasks. The first task is to remove the variable stator vane (VSV) feedback cable. The second task is to install the VSV feedback cable.
B. The cable is connected to the VSV feedback arm on the aft end of the main engine control (MEC).
C. It goes up through the forward part of the 6 o'clock strut area and
connects to the left VSV bellcrank lever arm at the 7:30 o'clock
position.
TASK 75-31-02-004-001-C00
2. Remove the Variable Stator Vane (VSV) Feedback Cable____________________________________________________
A. References
(1) AMM 78-31-00/201, Thrust Reverser
B. Access
(1)
Location Zones 506 Engine No. 1 - attached to the forward stator case of the HPC at the 1:30 and 7:30 o'clock positions
606 Engine No. 2 - attached to the forward stator case of the HPC at the 1:30 and 7:30 positions
(2)
Access Panels
5739L/5783L Engine No. 1 - Thrust Reverser Half
5839R/5838R Engine No. 2 - Thrust Reverser Half
C. Procedure (Fig. 401)
S 014-055-C00
WARNING: OBEY THE INSTRUCTIONS IN THE PROCEDURE TO OPEN THE THRUST
_______ REVERSER. IF YOU DO NOT OBEY THE INSTRUCTIONS, INJURY TO PERSONS OR DAMAGE TO EQUIPMENT CAN OCCUR.
(1)
Open the thrust reverser halves (AMM 78-31-00/201).
S 034-003-C00
(2)
Disconnect the end of the VSV feedback cable from the lever arm of the VSV bellcrank assembly.
(a)
The VSV bellcrank assembly is found on the forward case of the high pressure compressor (HPC) at the 7:30 o'clock position.
(b)
Remove the cotter pin from the nut.
1) Discard the cotter pin.
(c)
Remove the bolt, nut and washer.
S 034-004-C00
(3) Move the inner part of the cable to the fully retracted position at the compressor bellcrank end.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
BELLCRANK
LEVER ARM
SEEA SEEB
WASHER BOLT
VSV ACTUATOR MOUNTING
NUT VSV FEEDBACK BRACKET CABLE ROD END BEARINGCOTTER PIN BELLCRANK VSV
LEVER ARM FEEDBACK CABLE
B
SEE C
WASHER BOLT
NUT
VSV FEEDBACK
CABLE ROD END
BEARING
COTTER PIN
MEC
FEEDBACK ARM SEE D
C
MAIN ENGINE CONTROL (MEC)
MEC SLOTTED
FEEDBACK A BRACKET
ARM NOSE CAP
ROD END BEARING CONDUIT CAP
SUPPORT TUBE
JAM NUT
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