(d)
Disconnect the tube nuts from the head and rod ends at the
actuator.
(e)
Loosen the jamnut and the key lock from the actuator piston
rod.
CAUTION: USE THE END HEX ON THE ACUTATOR ROD ONLY TO TURN THE ROD.
_______
DAMAGE TO THE ROD SURFACE CAN CAUSE ROD SEAL LEAKAGE
DURING OPERATION.
(f)
Use the rod end hex to loosen the actuator rod.
(g)
Move the actuator rod apart from the part of the actuator
clevis with threads.
(h)
If the left VSV actuator is to be removed, do the steps that follow: 1) Remove the two bolts and nuts that attach the clamp bracket
for the fuel tube to the mounting bracket for the VSV
feedback cable. 2) Loosen the nose cap on the feedback cable. 3) Loosen the nose cap from the conduit threads. 4) Remove the feedback cable from the mounting bracket. 5) Remove the three bolts which attach the two parts that
follow:
a) The mounting bracket for the VSV feedback cable.
b) The end cover for the actuator rod.
6) Install the bolts and washers in the actuator housing.
(i)
Remove the bolts, nuts and sleeve which attach the actuator to the bellcrank assembly.
(j)
Remove the actuator from the engine.
S 034-032-C00
(4) Remove the nipples, and remove and discard the o-rings from the actuator ports that follow:
NOTE: If the replacement actuator is supplied with all the nipples
____
installed, do not do this step.
(a)
The Drain port (right VSV actuator)
(b)
The Rod end port
(c)
The Head end port.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
75-31-01
ú ALL ú
ú ú ú C01.101 ú BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details. Page 404Jul 12/02
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
S 684-033-C00
(5)
Drain all the fuel from the removed actuator.
S 174-034-C00
(6)
Flush the actuator with oil.
S 494-035-C00
(7) Install plugs or covers on all the open ports. ú ú TASK 75-31-01-404-037-C00 ú3. AIRPLANES WITH CFM56-3B-1 OR CFM56-3B-2 ENGINES (PRE-CFMI-SB 72-982);
Install the Variable Stator Vane Actuator
_________________________________________
A. Equipment
(1)
856A1221, Rig Pin - Variable Stator Vane, (Not used on CFM56-3C-1 engines) CFM International, P.O. Box 15514, Cincinnati, OH 45215
(2)
856A1084, Cart - Hydraulic, CFM International
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.
(2) D00268 Petrolatum - Pure Mineral (CP2102)
C. References
(1)
AMM 70-10-01/201, Consumable Materials
(2)
AMM 75-31-02/501, Variable Stator Vane Feedback Cable
(3)
AMM 71-00-00/501, Power Plant
(4)
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
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
75-31-01
ALL ú ú C01.1 Page 405 ú Jul 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
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