TRANSFORMER RECTIFIER UNIT - REMOVAL/INSTALLATION
1. General
A. This procedure has these tasks:
(1) A removal of the transformer rectifier unit (TRU).
(2) An installation of the transformer rectifier unit (TRU).
B. The removal and installation procedures are the same for all of the units.
TASK 24-32-11-000-801
2. Transformer Rectifier Unit Removal
(Figure 401)
A. General
(1) There are 3 TRUs in the Electrical Power System. The TRU's are located as follows:
(a) TRU 1, T11 is located on the E2-1 Equipment Rack
(b) TRU 2, T12 is located on the E4-2 Equipment Rack
(c) TRU 3, T13 is located on the E4-2 Equipment Rack
B. References
Reference Title
20-10-07-000-801 E/E Box Removal (P/B 201)
C. Location Zones
Zone Area
117 Electrical and Electronics Compartment - Left
118 Electrical and Electronics Compartment - Right
D. Access Panels
Number Name/Location
117A Electronic Equipment Access Door
E. Prepare for the Removal
SUBTASK 24-32-11-010-001
(1) Open this access panel:
Number Name/Location
117A Electronic Equipment Access Door
SUBTASK 24-32-11-860-001
(2) Before you remove TRU number 1, do this step:
(a) Open this circuit breaker and install safety tag:
Power Distribution Panel Number 1, P91
Row Col Number Name
A 6 C00806 TRU 1
SUBTASK 24-32-11-860-002
(3) Before you remove TRU number 2, do this step:
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
24-32-11
Page 401
D633A101-ILF Oct 15/2018
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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