Removal of the Wiper Arm

TASK 30-45-52-000-002-A
Removal of the Wiper Arm

WARNING: MAKE SURE THAT THE CIRCUIT BREAKERS RELATED TO THE WEATHER RADAR ARE OPENED, SAFETIED AND TAGGED.

ZONE: 211
ZONE: 212
FIN: 306DM
FIN: 307DM

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	ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
211	COCKPIT
212	COCKPIT

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)
Wiper Arm with Roller
Wiper Arm with Stud

3. Job Set-up
Subtask 30-45-52-865-050-A

A. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
FOR FIN: 307DM (ARMWIPER, CAPT)
122VU	ANTI ICE/WIPER/CAPT	4DB1	X12
FOR FIN: 306DM (ARMWIPER, F/O)
122VU	ANTI ICE/F/O/WIPER	4DB2	W12

Subtask 30-45-52-861-050-A

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

Subtask 30-45-52-869-050-A

C. Aircraft Maintenance Configuration
(1) FOR [307DM] (ARM-WIPER, CAPT)
On the overhead control and indicating panel 21VU, set the CAPT WIPER control switch 5DB1 to SLOW then to OFF.
(2) FOR [306DM] (ARM-WIPER, F/O)
On the overhead control and indicating panel 22VU, set the F/O WIPER control switch 5DB2 to SLOW then to OFF.

Subtask 30-45-52-865-051-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 307DM (ARMWIPER, CAPT)
49VU	ANTI ICE/RAIN/RPLNT/CAPT	1DB1	D01
** ON A/C ALL
121VU	COM NAV/RADAR/1	5SQ1	K13
** ON A/C NOT FOR ALL
121VU	COM NAV/RADAR/2	5SQ2	K14
** ON A/C ALL
122VU	ANTI ICE/WIPER/CAPT	4DB1	X12
FOR FIN: 306DM (ARMWIPER, F/O)
121VU	COM NAV/RADAR/1	5SQ1	K13
** ON A/C NOT FOR ALL
121VU	COM NAV/RADAR/2	5SQ2	K14
** ON A/C ALL
122VU	ANTI ICE/F/O/WIPER	4DB2	W12
** ON A/C NOT FOR ALL
122VU	ANTI ICE/RAIN/RPLNT/F/O	1DB2	W11

Subtask 30-45-52-941-050-A

E. Put the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE in position.

4. Procedure
Subtask 30-45-52-020-050-A

A. Removal of the Wiper Arm
(1) Fully loosen the bolt (7).

NOTE: Do not remove the bolt (7).

(2) Remove the screw (6).
(3) Remove the wiper arm (8) from the splined shaft (5).

5. Close-up
Subtask 30-45-52-860-052-A

A. Aircraft Maintenance Configuration
(1) If the rain repellent system is installed and:

not deactivated, close the circuit breaker(s): 1DB1 (1DB2).
deactivated, do not close the circuit breaker(s): 1DB1 (1DB2).

Subtask 30-45-52-865-057-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
121VU	COM NAV/RADAR/1	5SQ1	K13
** ON A/C NOT FOR ALL
121VU	COM NAV/RADAR/2	5SQ2	K14

[Rev.10 from 2021] 2026.04.01 00:31:32 UTC