Removal of the Brace Tool from the Lockstay Actuator

TASK 32-00-00-080-001-A
Removal of the Brace Tool from the Lockstay Actuator

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

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 3M (10 FT)- ADJUSTABLE
No specific	AR	SAFETY BARRIER(S)
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 13.5 and 11 m.N (119.47 and 97.35 lbf.in )
No specific	Torque wrench: range to between 20 and 17 m.N (14.75 and 12.54 lbf.ft )
460005832	1	SPRING EXPANDER-MLG SIDE STAY
460006437	1	TOOL-HOLDING
DRT68864	1	LOCK, STAY BRACE TOOL

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03GBB1)	Synthetic Oil base Grease-General Purpose Clay Thickened -
(Material No.03GCB1)	Synthetic Oil base Grease-Landing Gear Wheel Bearing Lithium Thickened -
(Material No.03HBD9)	Synthetic Ester base Grease-General Purpose Low Temp -
(Material No.06AAB1)	Polysulfide Sealant-General Purpose Fillet -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
5	COTTER PIN	AIPC 32-11-17-01-030
11	TAB WASHER	AIPC 32-11-18-02-050

D. Referenced Information

REFERENCE	DESIGNATION
TASK 12-22-32-640-001-A	Lubrication of Main Landing Gear and Doors
TASK 29-10-00-864-001-A	Depressurize the Green Hydraulic System
TASK 29-10-00-864-002-A	Depressurize the Yellow Hydraulic System
TASK 29-14-00-614-001-A	Depressurization of the Hydraulic Reservoirs
TASK 29-23-00-860-001-A	Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU)
TASK 32-00-00-481-001-A	Installation of the Safety Devices on the Landing Gears
TASK 32-00-00-481-002-A	Installation of the Safety Devices on the Landing Gear Doors
TASK 32-11-00-220-003-A	Detailed Dimensional Check of the MLG Lockstay Assembly
TASK 32-11-19-081-001-A	Removal of the MLG Spring-Expander Tool
TASK 12-22-00-00	LUBRICATION - DESCRIPTION AND OPERATION
MLG Lockstay Actuator Brace Tool
MLG Lockstay Actuator Brace Tool

3. Job Set-up
Subtask 32-00-00-941-061-A

A. Safety Precautions
(1) Make sure that the SAFETY BARRIER(S) are in position.
(2) Make sure that the ground safety locks are installed on the landing gear and the landing gear doors (Ref. AMM TASK 32-00-00-481-001) and (Ref. AMM TASK 32-00-00-481-002).
(3) On panel 400VU:

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

(4) Make sure that a WARNING NOTICE(S) is in position to tell persons not to pressurize:

The Green hydraulic system
The Yellow hydraulic system.

Subtask 32-00-00-860-059-A

B. Aircraft Maintenance Configuration
(1) Make sure that the isolation coupling of the PTU is disconnected (Ref. AMM TASK 29-23-00-860-001).
(2) Make sure that the Yellow and Green Hydraulic Systems are depressurized (Ref. AMM TASK 29-10-00-864-002) and (Ref. AMM TASK 29-10-00-864-001).
(3) Make sure that the applicable hydraulic system reservoir is depressurized (Ref. AMM TASK 29-14-00-614-001)
(4) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position below the applicable side-stay, at zone 733 or 743.

Subtask 32-00-00-865-057-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
** ON A/C NOT FOR ALL
121VU	LGCIU/BAT SPLY/SYS2	59GA	R33
121VU	LGCIU/BAT SPLY/SYS1	58GA	R32
** ON A/C ALL
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34
** ON A/C NOT FOR ALL
121VU	LGCIU/BAT SPLY/SYS2	59GA	R32
121VU	LGCIU/BAT SPLY/SYS1	58GA	R31

4. Procedure
Subtask 32-00-00-080-050-B

A. Removal of the Brace Tool from the Lockstay Actuator

WARNING: DURING THIS TEST, MAKE SURE THAT THE LOCK-STAY STAYS IN THE LOCKED OVER-CENTER POSITION. DO NOT ADJUST THE SPRING EXPANSION TOOL OR THE LOCK-STAY BRACE TOOL BECAUSE THIS CAN MOVE THE LOCK-STAY TO THE UNLOCKED OVER-CENTER POSITION. IF THE LOCK-STAY IS IN THE UNLOCKED OVER-CENTER POSITION, THE LEG CAN MOVE AND CAUSE INJURY TO PERSONS AND/OR DAMAGE TO THE AIRCRAFT.

(1) Remove the lockstay actuator from the DRT68864 LOCK, STAY BRACE TOOL (13) as follows:
(a) Release and open the clamps (20) on the support arms (18) and (21).
(b) Remove the actuating cylinder (7) (weight 3.3 kg (7.2753 lb)) from the DRT68864 LOCK, STAY BRACE TOOL (13). Temporarily attach the actuating cylinder to the adjacent structure.
(c) Do not let the cylinder weight be held by the hoses only. This can cause damage to the hoses.
(2) Remove the DRT68864 LOCK, STAY BRACE TOOL (13) as follows:
(a) Use the 460006437 TOOL-HOLDING to hold the pin (8) and remove the bolt (10).
(b) Remove and discard the tab washer (11).
(c) Remove the sleeve (12).
(d) Remove and discard cotter pin (5).
(e) Remove the nut (4) and the washer (3).
(f) Remove the washer (3).
(g) Remove the pin (2), the washer (1) and the washers (6).
(h) If the pin (2) cannot be removed easily, loosen the lock-nuts (15). Adjust the length of the lockstay brace tool with the adjuster-nut (16) until the pin (2) can be removed.
(i) Remove the pin (8) and the washers (9).
(j) Remove the DRT68864 LOCK, STAY BRACE TOOL (13).
(3) Install the MLG lockstay actuating cylinder (7) as follows:
(a) Clean the component interface and/or the adjacent area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(b) Make sure that the parts retained from the removed component are clean and in the correct condition.
(c) Do an inspection of the component interfaces and the adjacent area.
(d) Lubricate the pins (2) and (8) and the attachment lugs of the sidestay and the lockstay with Synthetic Ester base Grease-General Purpose Low Temp - (Material No.03HBD9) or Synthetic Oil base Grease-General Purpose Clay Thickened - (Material No.03GBB1) or Synthetic Oil base Grease-Landing Gear Wheel Bearing Lithium Thickened - (Material No.03GCB1) .

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

(e) Hold the actuating cylinder (7) in the correct position at the lockstay.
(f) Install the washers (6), one on each side of eye-end of the actuating cylinder (7).
(g) Install the washer (1) and the pin (2).
(h) Align the other end of the actuating cylinder (7) in the sidestay.
(i) Install the washers (9), one on each side of the actuating cylinder (7).
(j) Install the pin (8).
(k) Install the washer (3) and the nut (4).
(l) TORQUE the nut (4) to between 13.5 and 11 m.N (119.47 and 97.35 lbf.in )

.
(m) Safety the nut (4) with the new AIPC 32-11-17-01-030 COTTER PIN (5).
(n) Install the sleeve (12), the new AIPC 32-11-18-02-050 TAB WASHER (11) and the bolt (10).
(o) Use the 460006437 TOOL-HOLDING to hold the pin (8) and TORQUE the bolt (10) to between 20 and 17 m.N (14.75 and 12.54 lbf.ft )

.
(p) Bend the tabs of the tab washer (11) to safety the bolt (10).
(q) Do the dimensional check on the lockstay actuator and the lockstay center-joint (Ref. AMM TASK 32-11-00-220-003).
(r) Lubricate the greasers on the actuating cylinder (7) (Ref. AMM TASK 12-22-32-640-001).
(s) Apply a layer of Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) to:

The head of the bolt (10)
The head of the pin (8)
The head of the pin (2)
The nut (4).

(4) Remove the 460005832 SPRING EXPANDER-MLG SIDE STAY (Ref. AMM TASK 32-11-19-081-001).

5. Close-up
Subtask 32-00-00-865-059-A

A. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
** ON A/C NOT FOR ALL
121VU	LGCIU/BAT SPLY/SYS2	59GA	R33
121VU	LGCIU/BAT SPLY/SYS1	58GA	R32
** ON A/C ALL
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34
** ON A/C NOT FOR ALL
121VU	LGCIU/BAT SPLY/SYS2	59GA	R32
121VU	LGCIU/BAT SPLY/SYS1	58GA	R31

Subtask 32-00-00-942-063-A

B. Removal of Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the safety barriers.
(3) Remove the WARNING NOTICE(S).
(4) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.01 12:30:11 UTC