(4)
Install the N2 indicator.
TASK 77-12-02-024-007-C00
2. N1 Indicator Removal
____________________
A. Access
(1) Location Zone
101, 102 Control Cabin
B. Procedure
S 864-005-C00
(1) For the left engine, open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P6 Main Power Distribution Panel
1) C00732 TACH IND ENG 1 N1
S 864-027-C00
(2) For the right engine, open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P6 Main Power Distribution Panel
1) C00733 TACH IND ENG 2 N1
S 034-002-C00
(3) Loosen the adjustment screw of the clamp that attaches the indicator to the panel.
NOTE: The screws that are on the top left side of the indicator
____
are adjustment screws.
S 024-003-C00
(4) Carefully pull the indicator from the instrument panel to get access to the electrical connector.
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITHOUT ENGINE INSTRUMENT ú
77-12-02
SYSTEM (EIS) DISPLAY ú ú C05 Page 401 ú Mar 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
S 034-040-C00
CAUTION: CLEARLY IDENTIFY CONNECTIONS BEFORE YOU DISCONNECT THEM.
_______ CROSS-CONNECTION OF THE TACHOMETER INDICATOR (ON THE P2 INSTRUMENT PANEL) IS A POSSIBILITY WHEN YOU WORK WITH THIS COMPONENT.
(5)
Disconnect the electrical connector from the indicator.
S 024-006-C00
(6)
Remove the indicator from the instrument panel.
TASK 77-12-02-424-008-C00
3. N1 Indicator Installation_________________________
A. References
(1) AMM 77-12-00/501, Engine Tachometer System
B. Access
(1) Location Zone
101, 102 Control Cabin
C. Procedure
S 434-039-C00
CAUTION: POSITIVELY IDENTIFY CONNECTIONS BEFORE YOU CONNECT THEM AND DO
_______ FUNCTION CHECK UPON COMPLETION OF CONNECTION. CROSS-CONNECTION OF THE TACHOMETER INDICATOR (ON THE P2 INSTRUMENT PANEL) IS A POSSIBILITY WHEN YOU WORK WITH THIS COMPONENT.
(1)
Connect the electrical connector to the indicator.
S 424-010-C00
(2)
Install the indicator into the panel.
S 434-011-C00
(3)
Tighten the adjustment screw on the clamp that attaches the
indicator.
S 864-012-C00
(4)
For the left engine, close these circuit breakers and remove DO-NOT-CLOSE tags:
(a) P6 Main Power Distribution Panel
1) C00732 TACH IND ENG 1 N1
S 864-028-C00
(5) For the right engine, close these circuit breakers and remove DO-NOT-CLOSE tags:
(a) P6 Main Power Distribution Panel
1) C00733 TACH IND ENG 2 N1
EFFECTIVITYùùùùùùùùùùùùùùùùùùùùùùùùùùùùùù. AIRPLANES WITHOUT ENGINE INSTRUMENT ú
77-12-02
SYSTEM (EIS) DISPLAY ú ú C04 Page 402 ú Mar 12/00
BOEING PROPRIETARY - Copyright (C) - Unpublished Work - See title page for details.
////////////////////////A / /
CFM56 ENGINES
737-300/400/500/ /MAINTENANCE MANUAL ////////////////////////
S 714-014-C00
(6) Do the operational test of the N1 tachometer system
(AMM 77-12-00/501).
TASK 77-12-02-024-013-C00
4. N2 Indicator Removal
____________________
A. Access
(1) Location Zone
101, 102 Control Cabin
B. Procedure
S 864-015-C00
(1) For the left engine, open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P6 Main Power Distribution Panel
1) C00734 TACH IND ENG 1 N2
S 864-029-C00
(2) For the right engine, open these circuit breakers and attach DO-NOT-CLOSE tags:
(a) P6 Main Power Distribution Panel
1) C00735 TACH IND ENG 2 N2
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