Installation of the Wiper Arm

TASK 30-45-52-400-002-A
Installation of the Wiper Arm

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

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

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	2	GAGE - SPRING
No specific	AR	PAPER - THIN
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	Torque wrench: range to between 0.55 and 0.45 m.daN (48.67 and 39.82 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03GBB1)	Synthetic Oil base Grease-General Purpose Clay Thickened -
(Material No.03HBD9)	Synthetic Ester base Grease-General Purpose Low Temp -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
211	COCKPIT
212	COCKPIT

D. 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 24-41-00-862-002-A	De-energize the Aircraft Electrical Circuits Supplied from the External Power
TASK 24-41-00-862-002-A-01	De-energize the Aircraft Electrical Circuits Supplied from the APU
TASK 24-41-00-862-002-A-02	De-energize the Aircraft Electrical Circuits Supplied from the Engine 1(2)
TASK 12-22-00-00	LUBRICATION - DESCRIPTION AND OPERATION
Wiper Arm with Roller
Installation of Wiper Arm
Wiper Arm with Stud
Wiper Arm - Test

3. Job Set-up
Subtask 30-45-52-865-058-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

Subtask 30-45-52-860-050-A

B. Aircraft Maintenance Configuration
(1) Make sure that the aircraft electrical circuits are energized (Ref. AMM TASK 24-41-00-861-002).
(2) Do a functional test of the motor converter:
(a) FOR [307DM] (ARM-WIPER, CAPT)
On panel 21VU, set the CAPT WIPER control switch to SLOW.
(b) FOR [306DM] (ARM-WIPER, F/O)
On panel 22VU, set the F/O WIPER control switch to SLOW.
1 Make sure that the wiper motors work properly.
(c) FOR [307DM] (ARM-WIPER, CAPT)
On panel 21VU, set the CAPT WIPER control switch to OFF.
(d) FOR [306DM] (ARM-WIPER, F/O)
On panel 22VU, set the F/O WIPER control switch to OFF.
1 Make sure that the wiper motors stop.
(3) Make sure that the ACCESS PLATFORM 5M (16 FT)- ADJUSTABLE is in position.

Subtask 30-45-52-865-052-A

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

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
122VU	ANTI ICE/WIPER/CAPT	4DB1	X12
FOR FIN: 306DM (ARMWIPER, F/O)
122VU	ANTI ICE/F/O/WIPER	4DB2	W12
** ON A/C NOT FOR ALL
122VU	ANTI ICE/RAIN/RPLNT/F/O	1DB2	W11

4. Procedure
Subtask 30-45-52-210-050-A

A. Preparation for Installation
(1) Make sure that the splines of the splined shaft are not damaged.
(2) Apply a small quantity of Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) to the splined shaft before installation.

NOTE: For lubricant grease specification and lubrication requirements, refer to (Ref. AMM D/O 12-22-00-00).

Subtask 30-45-52-420-050-A

B. Installation of the Wiper Arm

Wiper Arm with Roller

Installation of Wiper Arm

Wiper Arm with Stud

(1) Clean the component interfaces and the adjacent area.
(2) Do a visual inspection of the component interfaces and the adjacent area.
(3) Install the wiper arm (8) on the splined shaft (5) and make sure that the wiper blade (1) is correctly installed (parking position).
(4) Make sure visually that the wiper blade (1), the wiper arm (8), the stops for the wiper blade in the parking position and the lift block are in the correct position. Make sure that the rubber of the wiper blade (1) is not worn.
(5) When the wiper is in the parking position on the windshield, the lower edge of the rubber block (3) of the fitting that attaches the wiper blade (1) to the wiper arm (8) must be 8 +5 mm or -4.5 mm (0.31 +0.20 in. or -0.18 in.) from the windshield frame.
(6) Install the screw (6) and TORQUE to between 0.55 and 0.45 m.daN (48.67 and 39.82 lbf.in )

and adjust the bolt (7).

Subtask 30-45-52-820-050-A

C. Adjustment of the Wiper Arm with Roller

Wiper Arm - Test

Wiper Arm with Roller

(1) Adjustment of the force of the blade on the windshield:
(a) Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
4DB1, 4DB2.
(b) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(c) Wet the windshield with water.
(d) FOR 307DM
On the panel 21VU, set the CAPT WIPER control switch to SLOW.
FOR 306DM
On the panel 22VU, set the F/O WIPER control switch to SLOW.
(e) When the wiper arm (8) is in the center position on the windshield, open, safety and tag this(these) circuit breaker(s):
FOR 307DM
4DB1
FOR 306DM
4DB2.
(f) Dry the windshield with a Textile-Lint free Cotton - (Material No.14SBA1) .
(g) Put a PAPER - THIN between the wiper blade (1) and the windshield.
(h) Attach the end of the GAGE - SPRING to the bolt that attaches the wiper blade (1) to the wiper arm (8).
(i) Pull the ring of the GAGE - SPRING with your hand.
(j) When the paper starts to move freely, record the value on the GAGE - SPRING.

NOTE: The value on the gage is the wiper arm pressure.

(k) Make sure that the force necessary to lift the wiper blade (1) from the windshield is 4.5 +0.1 daN or -0.1 daN (10.1164 +0.2248 lbf or -0.2248 lbf).
(l) If necessary, turn the adjustment bolt (7) to adjust the pressure of the wiper arm (8).
(2) Adjustment of the wiper blade (1) pressure on the rest blocks (2) and (4) with an adjustable roller (10) installed on the wiper arm (8):
(a) Turn the adjustable nut (9) to get a minimum of clearance of 1 mm (0.0394 in.) between the roller (10) and the windshield.
(b) Put the wiper arm (8) in the parking position.
1 Close this(these) circuit breaker(s):
FOR 307DM
4DB1
FOR 306DM
4DB2.
2 FOR 307DM
On the panel 21VU, set the CAPT WIPER control switch to OFF.
FOR 306DM
On the panel 22VU, set the F/O WIPER control switch to OFF.
3 Make sure that the wiper arm (8) stops correctly in the parking position.

NOTE: If necessary, adjust the wiper blade (1) pressure with the nut (9).

(c) Make sure that the wiper blade (1) touches the rest blocks (2) and (4).
1 If there is no contact between the wiper blade (1) and the rest blocks (2) and (4):

Adjust the roller (10) to move it in the wiper arm (8) with the applicable value until the blade touches the rest blocks (2) and (4) without blade crash.

2 If the wiper blade (1) is crashed on the rest blocks (2) and (4), the adjustment of the roller (10) must not be changed after the adjustment of the clearance.

Subtask 30-45-52-820-052-A

D. Adjustment of the Wiper Arm with Stud

Wiper Arm - Test

Wiper Arm with Stud

(1) Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):
[4DB1] [4DB2] 4DB1, 4DB2.
(2) Energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-861-002).
(3) Wet the windshield with water.
(4) FOR 307DM
On the panel 21VU, set the CAPT WIPER control switch to SLOW.
FOR 306DM
On the panel 22VU, set the F/O WIPER control switch to SLOW.
(5) When the wiper arm (8) is in the center position on the windshield, open, safety and tag this(these) circuit breaker(s):
FOR 307DM
4DB1
FOR 306DM
4DB2.
(6) Dry the windshield with a Textile-Lint free Cotton - (Material No.14SBA1) .
(7) Put a PAPER - THIN between the wiper blade (1) and the windshield.
(8) Attach the end of the GAGE - SPRING to the bolt that attaches the wiper blade (1) to the wiper arm (8).
(9) Pull the ring of the GAGE - SPRING with your hand.
(10) When the paper starts to move freely, record the value on the GAGE - SPRING.

NOTE: The value on the gage is the wiper arm pressure.

(11) Make sure that the force necessary to lift the wiper blade (1) from the windshield is 4.5 +0.1 daN or -0.1 daN (10.1164 +0.2248 lbf or -0.2248 lbf).
(12) If necessary, turn the adjustment bolt (7) to adjust the pressure of the wiper
(13) Close this(these) circuit breaker(s):
FOR 307DM
4DB1
FOR 306DM
4DB2.
(14) FOR 307DM
On the overhead control and indicating panel 21VU, set CAPT WIPER control switch 5DB1 to OFF.
FOR 306DM
On the overhead control and indicating panel 22VU, set F/O WIPER control switch 5DB2 to OFF.
(15) Make sure that the wiper arm (8) is in the parking position.

5. Close-up
Subtask 30-45-52-942-050-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).

Subtask 30-45-52-865-059-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 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
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 NOT FOR ALL
122VU	ANTI ICE/RAIN/RPLNT/F/O	1DB2	W11

Subtask 30-45-52-860-053-A

C. Circuit Breaker Closing
(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 30-45-52-862-050-A

D. De-energize the aircraft electrical circuits
(Ref. AMM TASK 24-41-00-862-002).

[Rev.10 from 2021] 2026.04.01 00:31:33 UTC