Removal of the Weather-Radar Control Unit

TASK 34-41-12-000-001-A
Removal of the Weather-Radar Control Unit

ZONE: 210
FIN: 3SQ

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

REFERENCE	QTY	DESIGNATION
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
210	CKPT,FWD COMPT BHD TO FLT COMPT BULKHEAD

C. Referenced Information

REFERENCE	DESIGNATION
Weather-Radar Control Unit ** ON A/C NOT FOR ALL
Weather-Radar Control Unit ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 34-41-12-865-050-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
121VU	COM NAV/RADAR/1	5SQ1	K13
** ON A/C NOT FOR ALL
121VU	COM NAV/RADAR/2	5SQ2	K14

4. Procedure
Subtask 34-41-12-020-051-A

A. Removal of the Weather-Radar Control Unit
(1) Loosen the four quarter-turn fasteners (1).
(2) Pull the weather-radar control unit (2) from its housing (5).

CAUTION: MAKE SURE THAT THE ELECTRICAL CONNECTORS ARE CLEAN BEFORE YOU DISCONNECT OR CONNECT THEM. CONTAMINATION ON THE ELECTRICAL CONNECTORS CAN CAUSE DAMAGE TO EQUIPMENT.

(3) Disconnect the electrical connector(s) (4) and hold it (them) away from the panel.
(4) Remove the weather-radar control unit (2).
(5) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.

[Rev.10 from 2021] 2026.04.01 01:01:08 UTC