AFT ATTACH BOLT
SLEEVE
VSV
BELLCRANK
ASSEMBLY
SPACER SEE B
VSV FEEDBACK CABLE WASHER
FORWARD ATTACH BOLT VSV ACTUATOR
G-M56-MM-0138(1)-00-BFWD
WASHER BOLT A1
BELLCRANK
LEVER ARM
ROD ENDBEARING TO COTTER PIN
THE VSV FEEDBACK CABLE
NUT 1
LEFT SIDE BELLCRANK ASSEMBLY IS SHOWN,
RIGHT SIDE IS SIMILAR B
Variable Stator Vane (VSV) Bellcrank Assembly Installation Figure 401
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////
(b)
Discard the cotter pin.
(c)
Remove the bolt, nut and washer.
(d)
Move the cable inner member to the fully retracted position at the bellcrank end.
S 034-004-C00
(3)
Remove the VSV actuator (AMM 75-31-01/401).
S 034-005-C00
(4)
Remove the nuts and D-head bolts that connect the tie rods to the connecting link clevises.
S 034-006-C00
(5)
Remove the attach bolts, spacer, washers and sleeves that attach the bellcrank assembly to forward stator case of the HPC.
S 024-007-C00
(6)
Remove the bellcrank assembly from the engine.
TASK 75-31-03-404-008-C00
3. Install the Variable Stator Vane Bellcrank Assembly
___________________________________________________
A. Consumable Materials
(1)
D00004 Grease - Graphite (CP2101) (AMM 70-10-01/201)
(2)
D00579 LPS-1 Penetrating Oil (CP2857) (AMM 70-10-01/201)
B. References
(1)
AMM 70-10-01/201, Consumable Materials
(2)
AMM 75-31-01/401, Variable Stator Vane Actuator
(3)
AMM 78-31-00/201, Thrust Reverser System
C. Access
(1)
Location Zones 506 Engine No. 1 - Forward Stator Case of the HPC at the 1:30 and 7:30 o'clock positions
606 Engine No. 2 - Forward Stator Case of the HPC at the 1:30 and 7:30 o'clock positions
(2)
Access Panels 5739L/5783L Engine No. 1 - Thrust Reverser Half 5839R/5838R Engine No. 2 - Thrust Reverser Half
D. Procedure (Fig. 401)
S 644-009-C00
(1) Lubricate the attach bolt and D-head bolt threads with grease.
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
(2) S 424-010-C00Put the bellcrank assembly in position on the forward stator case of the HPC.
NOTE:____ Do this with the sleeve between the bellcrank and the stator case at the forward lower location of the attach bolt.
(3) S 434-011-C00Align the attach boltholes in the bellcrank assembly with the bosses in the stator case. (a) Install the forward attach bolts and washers. (b) Hand tighten the bolts.
(4) S 434-012-C00Install the sleeve between the bellcrank and the stator case at the aft location for the attach bolt.
NOTE:____ Do this with the sleeve at the locations that follow: - the upper bolt location on the bellcrank assembly - the lower bolt location on the right bellcrank assembly.
(a) (b) Install the bolt and washer.Hand tighten the bolt.
(5) S 434-013-C00Install the bolt, washer and spacer at the locations that follow: (a) The aft location of the lower bolt on the left bellcrank assembly. (b) The aft location on the upper bolt on the right bellcrank assembly.
(6) S 434-019-C00Hand tighten the bolts.
(7) S 434-014-C00Tighten the four attach bolts to 55-70 pound-inches (6.2-7.9 Newton meters).
(8) S 434-015-C00Align the tie rod ends with the connecting link clevises.
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