75-31-01
ALL ú ú C02.1 Page 401 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
ú (b) The VSV actuators must be installed on the engine in pairs
(left and right sides of the engine) to maintain the balanced ú forces in the VSV system. Do not install VSV actuators with ú different part numbers. ú ú NOTE:____The actuator clevis threaded onto the VSV actuator rod ú end is pre-set and cannot be adjusted in the field. ú ú ú TASK 75-31-01-004-028-C00 ú2. AIRPLANES WITH CFM56-3B-1 OR CFM56-3B-2 ENGINES (PRE-CFMI-SB 72-982);
Remove the Variable Stator Vane Actuator
________________________________________
A. Equipment
(1) Container - 5 gallon (20 liter) capacity, approved for use with fuel
B. Consumable Materials
(1) D00124 Oil - Lubricating, MIL-L-6081, Grade 1010 (CP2369)
NOTE: Filtered (10 micron) fuel may be used as an alternative for
____ operation of the VSV system.
C. References
(1) AMM 78-31-00/201, Thrust Reverser System
D. 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
E. Procedure (Fig. 401)
S 014-029-C00
(1)
Open the applicable thrust reverser half (AMM 78-31-00/201).
S 864-030-C00
(2)
Operate the VSV's to the full closed position (actuator rod extended) (AMM 75-31-00/201).
S 024-031-C00
(3)
Remove the actuator as follows:
(a)
Disconnect the line fittings on the shroud drain at the head and rod end shrouds at the actuator.
(b)
Loosen the head and rod end shrouds and move them to get access to the fuel tube nuts.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
75-31-01
ALL ú ú C01.1 Page 402 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
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CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
BELLCRANK ASSEMBLY
KEY LOCK
ACTUATOR CLEVIS SEE A
JAMNUT
SEE B
NUTS
HEX
BOLT SLEEVE
RIG PIN HOLE
FWD ROD BOLTVSV ACTUATOR
O-RING O-RING
NIPPLE NIPPLE
FUEL TUBE NUT
FUEL TUBE NUT
O-RING
O-RING ROD END SHROUD
DRAIN LINE
KEY LOCK
(CAPTURED)
ROD END
SHROUD
HEAD END
SHROUD
HEAD END SHROUD
DRAIN LINE
JAMNUT
CLEVIS END
A B
____NOTE: LEFT VSV ACTUATOR IS SHOWN;
INSTALLATION PROCEDURE IS
EQUIVALENT FOR RIGHT VSV ACTUATOR. 1195944-00-A
Variable Stator Vane (VSV) Actuator Installation
Figure 401
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
75-31-01
ALL ú ú C01 Page 403 ú Mar 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
WARNING: CLEAN YOUR SKIN FULLY IF YOU TOUCH THE ENGINE FUEL.
_______
REMOVE FUEL SOAKED CLOTHING IMMEDIATELY. IF YOUR SKIN
TOUCHES THE ENGINE FUEL, IT CAN BE DANGEROUS.
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