Removal of the Control Mechanism-Pitch Trim

TASK 27-41-41-000-001-A
Removal of the Control Mechanism-Pitch Trim

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.

WARNING: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

ZONE: 310

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

REFERENCE	QTY	DESIGNATION
No specific	1	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
0U190360	1	PIN-RIGGING,THS ACTUATOR,MECHANICAL INPUT LEVER

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
310	FUSLG TAIL SECTION AFT OF AFT PRESS BHD
312AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 22-82-12-000-001-A	Removal of the Multipurpose Control & Display Unit (MCDU)
TASK 23-13-13-000-001-A	Removal of the Radio Management Panel (RMP)
TASK 23-51-12-000-001-A	Removal of the Audio Control Panel (ACP)
TASK 29-24-00-863-001-A	Pressurize the Yellow Hydraulic System with the Electric Pump
TASK 29-24-00-864-001-A	Depressurize the Yellow Hydraulic System
TASK 34-41-12-000-001-A	Removal of the Weather-Radar Control Unit
TASK 34-52-12-000-001-A	Removal of the ATC/TCAS Control Unit
Pitch Trim Control Mechanism ** ON A/C NOT FOR ALL
Pitch Trim Control Mechanism ** ON A/C NOT FOR ALL
Panels 111VU and 112VU
Pitch Trim Control Mechanism

3. Job Set-up
Subtask 27-41-41-860-050-A ** ON A/C NOT FOR ALL

A. Aircraft Maintenance Configuration
(1) Pressurize the Yellow hydraulic system (Ref. AMM TASK 29-24-00-863-001).
(2) Put the THS control in the 0 position.
(3) Depressurize the Yellow hydraulic system (Ref. AMM TASK 29-24-00-864-001).

Subtask 27-41-41-010-050-A ** ON A/C NOT FOR ALL

B. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position at zone 310.
(2) Open the access door 312AR.

Subtask 27-41-41-480-050-A ** ON A/C NOT FOR ALL

C. Install the 0U190360 PIN-RIGGING,THS ACTUATOR,MECHANICAL INPUT LEVER (6) on the input lever of the screw jack (5) (Ref. Details D and E).

Pitch Trim Control Mechanism ** ON A/C NOT FOR ALL

Subtask 27-41-41-865-050-A ** ON A/C NOT FOR ALL

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	LIGHTING/EMER LT/CKPT/DOME	1LE	H08
** ON A/C NOT FOR ALL
49VU	LIGHTING/EMER LT/CKPT/DOME	1LE	H06
** ON A/C NOT FOR ALL
122VU	LIGHTING/INSTL LT/MAIN INST/PNL AND/PED	4LF	Y04
122VU	LIGHTING/FLOOD/CTR INST/PNL	2LE	Z04

Subtask 27-41-41-010-052-A ** ON A/C NOT FOR ALL

E. Remove the peripheral equipments
(1) Remove the MCDUs (3CA1 and 3CA2) (Ref. AMM TASK 22-82-12-000-001).
(2) Remove the radio management panels (1RG1 and 1RG2) (Ref. AMM TASK 23-13-13-000-001).
(3) Remove the audio control panels (2RN1 and 2RN2) (Ref. AMM TASK 23-51-12-000-001).
(4) Remove the weather radar control unit (3SQ) (Ref. AMM TASK 34-41-12-000-001).
(5) Remove the ATC control unit (3SH) (Ref. AMM TASK 34-52-12-000-001).
(6) Remove the panels 111VU and 112VU.

Panels 111VU and 112VU ** ON A/C NOT FOR ALL

NOTE: The removal procedure is the same for the panels 111VU and 112VU.

(a) Release the fasteners of the panel (1) and disengage the panel (1) from its housing.
(b) Disconnect the connector (3) from the panel (1).
(c) Remove the panel (1).
(d) Put CAP - BLANKING on the connectors (2) and (3).

4. Procedure
Subtask 27-41-41-020-051-A ** ON A/C NOT FOR ALL

A. Removal of the Pitch Trim Control Mechanism
(1) Remove the screws (13).
(2) Remove the plates (14), (15), (17) and (27).
(3) Cut and remove the lockwire from the screws (18), (19) and (21).
(4) Remove the screws (18), (19) and (21) and the washers (16).
(5) Remove the ribs (20) and (26).
(6) Remove the screws (22) and the washers (23).
(7) Release the plates (24) and (25).
(8) Remove the cotter pins (12), the nuts (11) and the washers (10).
(9) Remove the wheels (29) and the indicators (30) and (35).
(10) Remove the gears (31) and (34) and the spacers (32).
(11) Remove the shaft (28) and the bearings (33).

[Rev.10 from 2021] 2026.04.01 06:53:01 UTC