Installation of the Essential Transformer Rectifier

TASK 24-34-51-400-001-A
Installation of the Essential Transformer Rectifier

ZONE: 125
FIN: 1PE

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Fixtures, Tools, Test and Support Equipment

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE
No specific	Torque wrench: range to between 0.7 and 0.6 m.daN (61.95 and 53.10 lbf.in )
No specific	Torque wrench: range to between 1.6 and 1.5 m.daN (11.80 and 11.06 lbf.ft )

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
125	LATERAL AVIONIC COMPARTMENT
812

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-24-00-710-001-A	Operational Check of Emergency Generating System
Essential Transformer Rectifier

3. Job Set-up
Subtask 24-34-51-860-050-A

A. Aircraft Maintenance Configuration
(1) Make sure that the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE is in position at the access door 812.
(2) Make sure that the access door 812 is open.
(3) In the avionics compartment, make sure that the access panel of the AC/DC emergency power center 106VU is open.

Subtask 24-34-51-865-051-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
106VU	ESS TR/SPLY	4PE	C01

4. Procedure
Subtask 24-34-51-420-050-A

A. Installation of the Essential Transformer Rectifier
(1) Put the transformer rectifier (1) in position.
(2) Install the washers (2) and the screws (3) and then tighten the screws.
(3) Remove the blanking caps from the connectors.
(4) Make sure that all the electrical connections are clean and in the correct condition.
(5) Connect the connectors (4) to the transformer rectifier.
(6) Remove the insulating sleeves from the lugs.
(7) Connect the lugs (7) to the output terminals (8).
(8) Install the washer (6) and the nut (5) and TORQUE it to between 0.7 and 0.6 m.daN (61.95 and 53.10 lbf.in )

.
(9) Install the washer (9) and the nut (10) and TORQUE it to between 1.6 and 1.5 m.daN (11.80 and 11.06 lbf.ft )

.
(10) Install the protective caps on the terminals (8).

Subtask 24-34-51-865-052-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
106VU	ESS TR/SPLY	4PE	C01

Subtask 24-34-51-710-050-A

C. Operational Test of the Emergency Generation System
(1) Do an operational test of the Emergency Generation System (Ref. AMM TASK 24-24-00-710-001).

5. Close-up
Subtask 24-34-51-410-050-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) In the avionics compartment, close the access panel of the AC/DC emergency power center 106VU.
(3) Close the access door 812.
(4) Remove the access platform(s).

[Rev.10 from 2021] 2026.04.01 05:49:53 UTC