73-21-08
ALL ú ú C01 Page 406 ú Mar 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BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.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 ////////////////////////
S 434-029-C00
(18)
Install the bolts and nuts to attach the cover plate.
S 434-030-C00
(19)
Tighten the bolts to 90-110 pound-inches (10.5-12.7 Newton meters).
S 864-031-C00
(20)
Remove the DO-NOT-CLOSE tags and close these circuit breakers:
(a) P6-2 Load Control Center
1) ENGINES MASTER CAUTION
2) TACH IND ENG 1 N2
3) TACH IND ENG 2 N2
4) ENGINES TRIM
S 714-032-C00
(21)
Do the test for engine operation at 70% N1 as shown in the Power Plant Reference Table (AMM 71-00-00/501).
S 414-033-C00
(22)
Close the left fan cowl panel (AMM 71-11-02/201).
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. ú
73-21-08
ALL ú ú C01 Page 407 ú Mar 12/02
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
N2 CONTROL ALTERNATOR SPEED SENSOR - INSPECTION/CHECK
_____________________________________________________
1. General
_______
A. This procedure makes an inspection of the two electrical grommets that are found in the control alternator stator.
B. A damaged grommet that has increased in size can cause a failure of the connector.
NOTE: This task does not apply to engines that have accomplished
____
CFMI SB (CFM56-3) 77-023.
TASK 73-21-08-216-001-C00
2. N2 Control Alternator Inspection
________________________________
A. References
(1)
AMM 71-11-02/201, Fan Cowl Panels
(2)
AMM 73-21-08/401, N2 Control Alternator Speed Sensor
(3)
AMM 77-12-00/501, Engine Tachometer System
B. Access
(1)
Location Zones
502/602 Fan Cowl Panel, Left
506/606 Engine
(2)
Access Panels
5746L/5846R, Fan Cowl Panels, Left
C. Make an Inspection of the Speed Sensor for the N2 Control Alternator (Fig. 601)
S 016-006-C00
(1)
Open the right fan cowl panel (AMM 71-11-02/201).
S 016-002-C00
(2)
Remove the stator for the N2 control alternator (AMM 73-21-08/401).
S 216-003-C00
(3)
Do these steps to make an inspection of the stator:
(a)
Find the grommets in the alternator stator through the core laminations.
(b)
Measure the distance from the inner surface of the alternator stator to the edge of the grommet.
(c)
Make sure the grommets are 0.20 inch (5.08 mm) below the surface of the alternator stator (Fig. 601).
(d)
If the grommets are not in the limit, replace the alternator stator (AMM 73-21-08/401).
(4)
Install the N2 alternator stator (AMM 73-21-08/401).
S 416-004-C00
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73-21-08
ALL ú ú C01 Page 601 ú Jul 15/95
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
N2 CONTROL
ALTERNATOR
SPEED SENSOR
HOUSING
STARTER DUCT
(REF)
ACCESSORY
GEAR BOX
(AGB)
(REF)
SEE A
AGB HAND
CRANKING
PAD
SEE B
FWD
A
GEARSHAFT
GEARSHAFT
SELF-LOCKING
NUT
A
ROTOR
ACCESSORY
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