Removal of the Anti-Ice Valve Sense-Lines Assembly

TASK 21-61-41-000-002-A
Removal of the Anti-Ice Valve Sense-Lines Assembly

FIN: 10HM ** ON A/C NOT FOR ALL
FIN: 11HM ** 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	AR	PLUG - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [10HM] (PACK 1-AIR CONDITIONING)
191BB, 191KB
FOR [11HM] (PACK 2-AIR CONDITIONING)
192FB, 192KB

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 53-35-13-000-002-A	Removal of the Quick-Release Access Panels from the Belly Fairing Structure
Anti-Ice Valve Sense-Lines Assembly - Component Location ** ON A/C NOT FOR ALL
Anti-Ice Valve Sense-Lines Assembly - Component Location ** ON A/C NOT FOR ALL
Anti-Ice Valve Sense-Lines Assembly - Component Location ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 21-61-41-861-051-A ** ON A/C NOT FOR ALL

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

Subtask 21-61-41-865-063-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
FOR FIN: 10HM (PACK 1AIR CONDITIONING)
122VU	AIR COND/PACK TEMP/CTL SYS1/1/115VAC	1HH	X22
122VU	AIR COND/PACK TEMP/CTL SYS1/1/28VDC	3HH	X21
122VU	AIR COND/PACK TEMP CTL SYS2/1/28VDC	4HH	Y19
122VU	AIR COND/PACK TEMP CTL SYS2/1/115VAC	2HH	Y18
FOR FIN: 11HM (PACK 2AIR CONDITIONING)
122VU	AIR COND/PACK TEMP/CTL SYS1/2/115VAC	21HH	W22
122VU	AIR COND/PACK TEMP/CTL SYS1/2/28VDC	23HH	W21
122VU	AIR COND/PACK TEMP CTL SYS2/2/28VDC	24HH	Y21
122VU	AIR COND/PACK TEMP CTL SYS2/2/115VAC	22HH	Y20

Subtask 21-61-41-010-051-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Remove the access panel(s) (Ref. AMM TASK 53-35-13-000-002)
(a) FOR [10HM] (PACK 1-AIR CONDITIONING)

191KB and
191BB.

(b) FOR [11HM] (PACK 2-AIR CONDITIONING)

192KB and
192FB.

4. Procedure
Subtask 21-61-41-020-053-A ** ON A/C NOT FOR ALL

A. Removal of the Sense Lines Assembly
(1) At the anti-ice valve (3) disconnect the sense line connectors (4), (5), (6) and (7).
(2) At the air cycle machine (1) disconnect the sense line connector (2).
(3) At the condensor (14) disconnect the sense line connectors (11), (12) and (13).
(4) Remove the sense lines assembly from the aircraft.
(5) Put the PLUG-BLANKING in each disconnected line end.

Subtask 21-61-41-020-053-B ** ON A/C NOT FOR ALL

A. Removal of the Sense Lines Assembly
(1) At the anti-ice valve (3) disconnect the sense line connectors (7), (8), (9) and (10).
(2) At the solenoid (5) disconnect the sense line connectors (4) and (6),
(3) At the air cycle machine (1) disconnect the sense line connector (2).
(4) At the condensor (14) disconnect the sense line connectors (11), (12) and (13).
(5) Remove the sense lines assembly from the aircraft.
(6) Put the PLUG-BLANKING in each disconnected line end.

[Rev.10 from 2021] 2026.04.02 06:11:39 UTC