(2)
AMM 71-11-02/201, Fan Cowl Panels
(3)
AMM 72-00-00/201, Engine
B. Access
(1)
Location Zones 506 Engine No. 1 - top end of accessory gearbox, forward side 606 Engine No. 2 - top end of accessory gearbox, forward side
(2)
Access Panels
5746L Engine No. 1 - Left Fan Cowl Panel
5846R Engine No. 2 - Left Fan Cowl Panel
C. Procedure (Fig. 401)
S 864-002-C00
(1) Remove electrical power (AMM 24-22-00/201).
(a) Set the BAT switch on the Electrical Meters Battery and Galley Power Module (P5-13) to the OFF position and install a DO-NOT-OPERATE tag.
S 014-003-C00
(2)
Open the left fan cowl panel (AMM 71-11-02/201).
S 034-004-C00
(3)
Disconnect the two electrical connectors from the control alternator housing.
S 494-005-C00
(4)
Put caps on the alternator and cable connectors.
S 034-006-C00
(5)
Remove the three bolts that attach the control alternator housing to the accessory gearbox pad.
NOTE: Oil traces found in the stator housing and around the
____ rotor is a permitted and usual condition.
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73-21-08
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////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
N2 CONTROL
CFMI ALTERNATOR
CABLE TO PMC SPEED SENSOR
(DARK BLUE) HOUSING
BOEING
ELECTRICAL
SEE A CONNECTOR D552
ACCESSORY
GEAR
BOX
(AGB)
AGB HAND CRANKING COVER PLATE
SEE B
(SHEET 2)
START
VALVE
A
N2 Control Alternator Speed Sensor Installation
Figure 401 (Sheet 1)
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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
S 024-007-C00
(6) Remove the alternator housing from the gearbox pad.
NOTE: It is possible that the o-ring between the two will be
____ bonded. If the o-ring is bonded, it will be necessary to turn the housing while the sensor is removed.
S 034-008-C00
(7)
Remove and discard the o-ring.
S 034-009-C00
(8)
Remove the pad cover for N2 rotor rotation (AMM 72-00-00/201) from the gearbox.
S 494-010-C00
(9)
Put a 3/4 inch square drive wrench into the 3/4 inch drive receptacle in the gearbox to lock the N2 drive.
S 034-011-C00
(10)
Remove the nut that attaches the rotor to the gearshaft of the control alternator pad.
SPEED SENSOR HOUSING
N2 Control Alternator Speed Sensor Installation Figure 401 (Sheet 2)
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73-21-08
ALL ú ú C02 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 ////////////////////////
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