INTERLOCK MECHANISM
FOR THE REVERSE
THRUST LEVER
POSITION RESOLVERS
FOR THE THRUST LEVER
PILOTS' CONTROL STAND
A-A
Engine Control System - Component Location Figure 1 (Sheet 1)
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SEE B
ELECTRONICENGINE CONTROL
B
Engine Control System - Component Location
Figure 1 (Sheet 2)
B93277
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
E2-6 EQUIPMENT RACKENGR REF DWG: 76-11-11
Engine Fuel Conditioning Control Schematic Figure 2 (Sheet 1)
F29933
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PRESSURE
SEAL
(P8) ENG 3
NOTE: ENG 1 AND ENG 2 SIMILAR,ENG 3 AND ENG 4 SIMILAR
ENGR REF DWG: 73-21-02 SCHEMATIC
73-21-81 WIRE DIAGRAM
EEC THRUST LEVER POSITION RESOLVER
Engine Fuel Conditioning Control Schematic Figure 2 (Sheet 2)
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////////////////////////A / PW4000 SERIES /747-400 / ENGINES /MAINTENANCE MANUAL ////////////////////////
28V DC BUS 1
2.5 C405
T/R IND
ENG 1
P6 CIRCUIT BREAKER PNL
UNIT (E2-6 RACK) M7198 ELECTRONIC ENGINE CONTROL
____ENG 2, ENG 3, AND ENG 4 SIMILARNOTE:
1
IF W/A INDICATES SWITCH NOT CLOSED, TRANSFER CHANNEL.
IF W/A INDICATES SWITCH FOILED CLOSED,
SET BIT IN MAINTENANCE WORD - THE LIMITED DISPATCH.
ENGR REF DWG: 78-36-01
EEC THRUST LEVER INTERLOCK
Engine Fuel Conditioning Control Schematic Figure 2 (Sheet 3)
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C. The electrical power to the position resolver is supplied by the EEC.
5. Disengage Switches
__________________
A. Two disengage switches are found in thrust lever assembly 1, and two are found in thrust lever assembly 4.
B. The disengage switches are used to manually disengage the autothrottle system.
6. Go-Around Switches
__________________
A. Three go-around switches are found in thrust lever assembly 2, and three are found in thrust lever assembly 3.
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