Removal of the Static Inverter

TASK 25-18-51-000-001-A
Removal of the Static Inverter

ZONE: 121
ZONE: 122
FIN: 3NA ** ON A/C NOT FOR ALL

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	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
121	AVIONICS COMPARTMENT
122	AVIONICS COMPARTMENT
811

C. Referenced Information

REFERENCE	DESIGNATION
TASK 24-41-00-861-002-A	Energize the Aircraft Electrical Circuits from the External Power
TASK 24-41-00-861-002-A-01	Energize the Aircraft Electrical Circuits from the APU
TASK 24-41-00-861-002-A-02	Energize the Aircraft Electrical Circuits from Engine 1(2)
TASK 52-41-00-010-002-A	Open the Avionics Compartment Doors for Access
Static Inverter ** ON A/C NOT FOR ALL
Static Inverter ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 25-18-51-861-050-A ** ON A/C NOT FOR ALL

A. Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).

Subtask 25-18-51-865-050-A ** ON A/C NOT FOR ALL

B. Open, safety and tag this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	PILOTS OUTLETS/STAT INV	1NA	K25
121VU	PILOTS OUTLETS/115V 60HZ	2NA	K23

Subtask 25-18-51-010-050-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 2M (6 FT) - ADJUSTABLE in position, at zone 120.
(2) Open avionics compartment access-door 811 (Ref. AMM TASK 52-41-00-010-002).

4. Procedure
Subtask 25-18-51-020-050-A ** ON A/C NOT FOR ALL

A. Removal of the Static Inverter

Static Inverter ** ON A/C NOT FOR ALL

(1) Disconnect the electrical connector (5) from the static inverter (2).
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Hold the static inverter (2) that is installed on the plate assembly (1).
(4) Remove the screws (3) and the washers (4).
(5) Remove the static inverter (2) from the plate assembly (1).

Subtask 25-18-51-020-050-B ** ON A/C NOT FOR ALL

A. Removal of the Static Inverter

Static Inverter ** ON A/C NOT FOR ALL

(1) Disconnect the electrical connector (6) from the static inverter (1).
(2) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Hold the static inverter (1) that is installed on the bracket assembly.
(4) Remove the screw (4) and the washer (5).
(5) Remove the screws (3) and the washers (2).
(6) Remove the static inverter (1) from the bracket assembly.

[Rev.10 from 2021] 2026.03.31 23:29:39 UTC