Removal of the Tachometer

TASK 32-42-57-000-001-A
Removal of the Tachometer

WARNING: PUT THE SAFETY DEVICES AND THE WARNING NOTICES IN POSITION BEFORE YOU START A TASK ON OR NEAR:

THE FLIGHT CONTROLS
THE FLIGHT CONTROL SURFACES
THE LANDING GEAR AND THE RELATED DOORS
COMPONENTS THAT MOVE.

MOVEMENT OF COMPONENTS CAN KILL OR CAUSE INJURY TO PERSONS AND/OR CAN CAUSE DAMAGE TO THE EQUIPMENT.

WARNING: MAKE SURE THAT THE GROUND SAFETY-LOCKS ARE IN POSITION ON THE LANDING GEAR. THIS WILL PREVENT UNWANTED MOVEMENT OF THE LANDING GEAR, AND THUS POSSIBLE INJURY TO PERSONS AND DAMAGE TO THE AIRCRAFT AND/OR EQUIPMENT.

FIN: 19GG ** ON A/C NOT FOR ALL
FIN: 20GG ** ON A/C NOT FOR ALL
FIN: 21GG ** ON A/C NOT FOR ALL
FIN: 22GG ** 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	CAP - BLANKING
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	1	WARNING NOTICE(S)

B. Referenced Information

REFERENCE	DESIGNATION
TASK 32-00-00-481-001-A	Installation of the Safety Devices on the Landing Gears
TASK 32-48-51-000-005-A	Removal of the Fan Assy
Anti-Skid Tachometer ** ON A/C NOT FOR ALL
Anti-skid Tachometer ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 32-42-57-941-050-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Put the SAFETY BARRIER(S) in position.
(2) Make sure that the ground safety locks are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).
(3) On the panel 400VU:

make sure that the landing-gear control-lever 6GA is in the DOWN position
put a WARNING NOTICE(S) in position to tell persons not to operate the landing gear.

Subtask 32-42-57-865-054-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	HYDRAULIC/BRAKING AND STEERING/SYS2/SPLY	4GG	M36
121VU	HYDRAULIC/BRAKING AND STEERING/SYS2/CTL	3GG	M35
121VU	HYDRAULIC/BRAKING AND STEERING/SYS1/CTL	1GG	M34
121VU	HYDRAULIC/BRAKING AND STEERING/SYS1/IND AND/SPLY	2GG	M33

Subtask 32-42-57-010-051-B ** ON A/C NOT FOR ALL

C. Get Access
(1) Loosen the nut (15), then hold the hubcap (17) and remove the clamp (16). Carefully remove the hubcap (17) laterally.
(2) Remove and discard the cotter pins (3).
(3) Remove the nuts (2), the washers (1) and the screws (12).
(a) Make sure that the nut (6) does not move from its related position to the axle (5).
(4) Remove the mounting sleeve (11).
(5) Disconnect the connectors in the axle (5) from the tachometer (7).
(6) Remove the circlip (23), the washer (22), the spring (21) and the circlip (19).

NOTE: The cable kit from harness 2M contains the circlips (19) and (23), the spring (21) and the washer (22).

(7) Remove the connector (20) from the mounting sleeve (11).
(8) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(9) Carefully put the electrical connector (20) and connectors of tachometer into the axle.

Subtask 32-42-57-010-051-C ** ON A/C NOT FOR ALL

C. Get Access
(1) Remove the applicable brake fan assembly (Ref. AMM TASK 32-48-51-000-005).

4. Procedure
Subtask 32-42-57-020-055-A ** ON A/C NOT FOR ALL

A. Removal of the Tachometer from the Mounting Sleeve
(1) Remove the screws (14) and the washers (13). Then remove the tachometer (7) and the drive (9) together from the mounting sleeve (11).
(2) Remove the nuts (8) and the screws (10), then remove the drive (9) from the tachometer (7).

Subtask 32-42-57-020-055-D ** ON A/C NOT FOR ALL

A. Removal of the Tachometer from the Mounting Sleeve

NOTE: The tachometer and mounting sleeve are removed from the landing gear during the Get Access procedure.

(1) Remove the screws (7) and the washers (6). Then remove the tachometer (1) and the drive (3) together from the mounting sleeve (5).
(2) Remove the nuts (2) and the screws (4), then remove the drive (3) from the tachometer (1).

[Rev.10 from 2021] 2026.04.01 00:48:19 UTC