Removal of the MLG Leg Assembly

TASK 32-11-11-000-001-A
Removal of the MLG Leg Assembly

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: OBEY THE HYDRAULIC SAFETY PROCEDURES.

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

REFERENCE	QTY	DESIGNATION
No specific	2	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	PLIERS - CIRCLIP
No specific	AR	PLUG - BLANKING
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
460005835	1	SLEEVE - GROUND LOCK
98D27803000000	1	LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION
98D32104002000	1	EQUIPMENT-MLG REMOVAL INSTALLATION
98D32104002001	1	EQUIPMENT-MLG REMOVAL INSTALLATION
98D32104002002	1	EQUIPMENT MLG, REMOVAL INSTALLATION
98D32104002003	1	EQUIPMENT-MLG, REMOVAL INSTALLATION
98D32104005000	1	SPANNER-MLG REAR PINTLE
98D32104010000	1	INTERFACE BRACKET
98D32104010001	1	BRACKET ASSY INTERFACE
98D32104080000	1	SPANNER - MLG REAR PIN
98D32104190001	1	TOOL - R I (MLG FWD AND REAR PINTLE PINS)
98D32104190002	1	TOOL - R I (MLG FWD AND REAR PINTLE PINS)
CFD1142-00-000	1	TROLLEY-HANDLING, MLG
CFD1142-10-000	1	TROLLEY-HANDLING, MLG
CFD1142-30-000	1	TROLLEY-HANDLING, MLG

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [2501GM] (LEG ASSY-MLG, L)
574AB
FOR [2502GM] (LEG ASSY-MLG, R)
674AB

C. Referenced Information

REFERENCE	DESIGNATION
TASK 07-11-00-581-001-A	Lifting for Aircraft Maintenance Operations
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 27-50-00-866-008-A	Extension of the Flaps on the Ground
TASK 27-50-00-866-008-A-01	Extension of the Flaps/Slats on the Ground
TASK 27-54-45-000-004-A	Removal of the Torque Shaft
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
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 32-00-00-860-001-A	Flight Configuration Precautions with Electrical Power
TASK 32-00-00-860-001-A-01	Flight Configuration Precautions without Electrical Power
TASK 32-11-16-000-001-A	Removal of the MLG Side-Stay Assembly - Pre-EV MLG
TASK 32-11-16-000-001-A-01	Removal of the MLG Side Stay Assembly - Post-EV MLG
TASK 32-12-00-010-001-A	Open the Main Gear Doors for Access
TASK 32-12-13-000-001-A	Removal of the Secondary Hinged Fairing
TASK 32-12-14-000-001-A	Removal of the MLG Fixed Fairing Assembly
TASK 32-31-46-000-001-A	Removal of the MLG Actuating Cylinder
TASK 32-41-11-000-006-A	Removal of the MLG Wheel
TASK 32-42-27-000-001-A	Removal of the Brake
TASK 57-51-37-000-008-A	Removal of the Access Door
TASK 57-51-42-000-001-A	Removal of the Overwing Panel Protection
Main Leg Assembly - Detail of Removal/Installation Equipment
Fairlead Assembly - Location and Detail
Details of the 1M Harness Connection (At the Disconnection Box)
Tie Rod for the Secondary Hinged Fairing - Removal/Installation
Main Leg Assembly - Location and Detail ** ON A/C NOT FOR ALL
MLG Pintle-Pins Location and Detail ** ON A/C NOT FOR ALL
MLG Pintle-Pins Location and Detail ** ON A/C NOT FOR ALL
Main Leg Assembly - Location and Detail ** ON A/C NOT FOR ALL
MLG Pintle-Pins Location and Detail ** ON A/C NOT FOR ALL
Blanking Plugs - Removal/Installation

3. Job Set-up
Subtask 32-11-11-941-050-A

A. Safety Precautions
(1) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(2) Make sure that the safety devices are installed on the landing gear (Ref. AMM TASK 32-00-00-481-001).
(3) On 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.

(4) On panel 110VU:

Put a WARNING NOTICE(S) on the GRAVITY GEAR EXTN handle to tell persons not to operate the landing-gear doors.

(5) Put a WARNING NOTICE(S) in the cockpit to tell persons not to operate the brakes.
(6) Put a WARNING NOTICE(S) in the cockpit to tell persons not to operate the flap/slat controls.
(7) Put the WARNING NOTICE(S) in position on the ground service connections to tell persons not to pressurize:

The Green Hydraulic system
The Yellow Hydraulic system.

Subtask 32-11-11-860-052-A

B. Aircraft Maintenance Configuration
(1) Extend the flaps fully (Ref. AMM TASK 27-50-00-866-008).
(2) Make sure that the applicable hydraulic systems are depressurized (Ref. AMM TASK 29-00-00-864-001).
(3) Make sure that the applicable hydraulic reservoirs are depressurized (Ref. AMM TASK 29-14-00-614-001).
(4) Install the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION on the flap/slat control lever.
(5) Disconnect the isolation coupling of the PTU (Ref. AMM TASK 29-23-00-860-001).

Subtask 32-11-11-010-054-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put two ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position adjacent to the applicable MLG leg assembly (one at the front and one at the rear).
(2) Open the applicable MLG door (Ref. AMM TASK 32-12-00-010-001).
(3) Make sure that the 460005835 SLEEVE - GROUND LOCK is on the applicable MLG door actuating cylinder.
(4) Remove the secondary hinged-fairing assembly (Ref. AMM TASK 32-12-13-000-001).
(5) Open the applicable access panel (Ref. AMM TASK 57-51-37-000-008):
(a) FOR [2501GM] (LEG ASSY-MLG, L)
open 574AB
(b) FOR [2502GM] (LEG ASSY-MLG, R)
open 674AB.
(6) Remove the torque shaft 6208CM (6258CM) (Ref. AMM TASK 27-54-45-000-004).

Subtask 32-11-11-010-054-B ** ON A/C NOT FOR ALL

C. Get Access
(1) Put two ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position adjacent to the applicable MLG leg assembly (one at the front and one at the rear).
(2) Open the applicable MLG door (Ref. AMM TASK 32-12-00-010-001).
(3) Make sure that the 460005835 SLEEVE - GROUND LOCK is on the applicable MLG door actuating cylinder.
(4) Remove the secondary hinged-fairing (Ref. AMM TASK 32-12-13-000-001).
(5) Remove the applicable access panel (Ref. AMM TASK 57-51-37-000-008):
(a) FOR [2501GM] (LEG ASSY-MLG, L)
Remove 574AB.
(b) FOR [2502GM] (LEG ASSY-MLG, R)
Remove 674AB.
(6) Remove the torque shaft (Ref. AMM TASK 27-54-45-000-004).

Subtask 32-11-11-010-054-C ** ON A/C NOT FOR ALL

C. Get Access
(1) Put two ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position adjacent to the applicable MLG leg assembly (one at the front and one at the rear).
(2) Open the applicable MLG door (Ref. AMM TASK 32-12-00-010-001).
(3) Make sure that the 460005835 SLEEVE - GROUND LOCK is on the applicable MLG door actuating cylinder.
(4) Remove the secondary hinged-fairing assembly (Ref. AMM TASK 32-12-13-000-001).
(5) Remove the applicable access panel (Ref. AMM TASK 57-51-37-000-008):
(a) FOR [2501GM] (LEG ASSY-MLG, L)
remove 574AB
(b) FOR [2502GM] (LEG ASSY-MLG, R)
remove 674AB.
(6) Remove the overwing panel protection (Ref. AMM TASK 57-51-42-000-001).
(7) Remove the torque shaft 6208CM (6258CM) (Ref. AMM TASK 27-54-45-000-004).

Subtask 32-11-11-582-050-A

D. Lift the Aircraft
(1) Lift the aircraft on jacks (Ref. AMM TASK 07-11-00-581-001).

Subtask 32-11-11-860-053-A

E. Flight Configuration Precautions
(1) If the electrical power is not necessary for other maintenance tasks, de-energize the aircraft electrical circuits (Ref. AMM TASK 24-41-00-862-002). Then, it is not necessary to operate the LGCIU circuit breakers.
(2) If the electrical power is necessary, do the precautions for flight configuration (Ref. AMM TASK 32-00-00-860-001) before you open the LGCIU circuit breakers.

Subtask 32-11-11-865-050-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	L/G/Y BRK/PRESS/IND	61GG	C10
** ON A/C ALL
49VU	L/G/LGCIU/SYS1/NORM	1GA	C09
** ON A/C NOT FOR ALL
49VU	ABCU &/Y BRK/PRESS IND	61GG	C10
** 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/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
121VU	HYDRAULIC/PARK BRK/CTL/STBY	71GG	N37
121VU	HYDRAULIC/PARK BRK/CTL/NORM	70GG	N36
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 32-11-11-020-053-A

G. Preparation of the MLG if it is to be Replaced
(1) Remove the applicable wheels (Ref. AMM TASK 32-41-11-000-006) and brakes (Ref. AMM TASK 32-42-27-000-001).
(2) Remove the applicable MLG fixed fairing assembly (Ref. AMM TASK 32-12-14-000-001).

4. Procedure
Subtask 32-11-11-020-056-B

A. Preparation for Removal of the MLG Leg Assembly
(1) Remove the bung/liner assembly as follows:
(a) Release the bolt (65) and remove the bung (66) from the liner (64).
(2) Disconnect the 1M and 2M Harnesses as follows:
(a) Disconnect the electrical connector (2) of the 2M system harness from the outboard electrical interface at the MLG support Rib 5.
(b) Remove the screws (90) and open the cover (91) of the MLG disconnection box.
(c) Remove the screw (93), the washer (94) and the upper fairlead (95).
(d) Disconnect the electrical connector (1).
(e) Remove the 1M harness (92) from the disconnection box.
(f) Put the CAP-BLANKING on each disconnected electrical connector and receptacle.
(3) Remove the side-stay assembly from the MLG (Ref. AMM TASK 32-11-16-000-001).
(4) Disconnect and support the actuating cylinder assembly from the MLG (Ref. AMM TASK 32-31-46-000-001).
(5) Disconnect the tie rod for the secondary hinged-fairing from the MLG as follows:
(a) Remove the bolt (54), the washer (53), the bonding strap (55) and the nut (46) from the transfer block (51).
(b) Support the tie rod (45). Remove the bolt (49), the washer (48), the pin (47), the spacer (50) and the threaded insert (52).
(c) Remove the tie rod (45) from the transfer block (51).

Subtask 32-11-11-020-057-A

B. Disconnect the Hydraulic Lines

WARNING: DO NOT GET THE FLUID ON YOUR SKIN OR IN YOUR EYES. IF YOU DO:

FLUSH IT AWAY WITH CLEAN WATER
GET MEDICAL AID.

CAUTION: MAKE SURE THAT THE FLUID DOES NOT STAY ON THE AIRCRAFT STRUCTURE. IF THE FLUID GETS ON THE AIRCRAFT STRUCTURE, WASH IT OFF IMMEDIATELY WITH SOAP AND WATER.

(1) Disconnect the hydraulic lines (3) thru (6).
(2) Put the PLUG-BLANKING in each disconnected line end.

Subtask 32-11-11-480-050-A ** ON A/C NOT FOR ALL

C. Installation of the Ground Support Equipment

Main Leg Assembly - Detail of Removal/Installation Equipment ** ON A/C NOT FOR ALL

(1) Attach the 98D32104010000 INTERFACE BRACKET (106) to the MLG drag stay.
(2) Attach the lifting beam (105) to the MLG leg.
(3) Remove the washer assemblies (121) and the blanking plugs (122) from the lower wing surface adjacent to the pintle bearings.

Blanking Plugs - Removal/Installation ** ON A/C NOT FOR ALL

(4) Attach the forward pivot bracket (109) and the rear pivot bracket (107) to the holes in the lower wing surface adjacent to the pintle bearings.
(5) Attach the forward rail assembly (110) and the aft rail assembly (108) to their related pivot brackets. Make sure that the carriages of the forward rail assembly (110) and the aft rail assembly (108) are in the fully outboard position.
(6) Attach the mini-hoists (113) and (114):

NOTE: The BLUE mini-hoist (113) (MAX Lifting Weight 509 kg (1122 lb)) attaches to the forward rail assembly (110).
The YELLOW mini-hoist (114) (MAX Lifting Weight 1272 kg (2804 lb)) attaches to the aft rail assembly (108).

(a) Install the eye-bolt in the hole in the shroud box.
(b) Connect the support cable (111) to the eye-bolt and the support cable (112) to the side-stay bracket on the rear spar.
(c) Connect the support cable (112) to the BLUE mini-hoist (113).
(d) Connect the support cable (111) to the YELLOW mini-hoist (114).
(e) Extend the mini-hoist lifting cables and connect them to the lifting beam (105).
(f) Laterally adjust the carriages of the forward rail assembly (110) and the aft rail assembly (108) through their gearboxes. Do this until the lifting cables are vertical (this makes sure that there is no lateral movement of the MLG when the pintle pins are removed).
(7) Operate the 98D32104002000 EQUIPMENT-MLG REMOVAL INSTALLATION or the 98D32104002001 EQUIPMENT-MLG REMOVAL INSTALLATION to support the weight of the leg assembly.

Subtask 32-11-11-480-050-C ** ON A/C NOT FOR ALL

C. Installation of the Ground Support Equipment
(1) Attach the 98D32104010000 INTERFACE BRACKET or the 98D32104010001 BRACKET ASSY INTERFACE (106) to the MLG drag stay.
(2) Attach the lifting beam (105) to the MLG leg.
(3) Remove the washer assemblies (121) and the blanking plugs (122) from the lower wing surface adjacent to the pintle bearings.

Blanking Plugs - Removal/Installation ** ON A/C NOT FOR ALL

(a) Install the eye-bolt in the hole in the shroud box.
(b) Connect the support cable (111) to the eye-bolt and the support cable (112) to the side-stay bracket on the rear spar.
(c) Connect the support cable (112) to the BLUE mini-hoist (113).
(d) Connect the support cable (111) to the YELLOW mini-hoist (114).
(e) Extend the mini-hoist lifting cables and connect them to the lifting beam (105).
(f) Laterally adjust the carriages of the forward rail assembly (110) and the aft rail assembly (108) through their gearboxes. Do this until the lifting cables are vertical (this makes sure that there is no lateral movement of the MLG when the pintle pins are removed).
(7) Operate the 98D32104002002 EQUIPMENT MLG, REMOVAL INSTALLATION or the 98D32104002003 EQUIPMENT-MLG, REMOVAL INSTALLATION to support the weight of the leg assembly.

Subtask 32-11-11-020-054-B ** ON A/C NOT FOR ALL

D. Removal of the MLG Leg Assembly

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

(1) Remove and discard the lockwire from the bolt (22).
(2) Remove the bolt (22).
(3) Carefully remove the lubrication fitting (21) from the rear pintle pin (20).
(4) Remove and discard the O-rings (23).
(5) Remove and discard the cotter pin (34).
(6) Remove the nut (33), the washer (35) and the bolt (29).
(7) Remove and discard the washer (28).
(8) Remove the wire (16):

NOTE: Clean all the related parts before removal of the wire. This will make the removal of the wire easier.

(a) Use an applicable tool to release the tail of the wire (16) from the key slot in the lock-washer (17).
(b) Use PLIERS - CIRCLIP to hold the tail of the wire (16).
(c) Carefully pull the wire (16) (in a clockwise direction) until it releases from the chamfered slot in the nut (18).
(9) Remove the lock-washer (17) from the nut (18).
(10) Use the 98D32104005000 SPANNER-MLG REAR PINTLE to remove the nut (18) and the washer (19) from the rear pintle pin (20).

Subtask 32-11-11-020-050-D ** ON A/C NOT FOR ALL

E. Removal of the Pintle Pins

CAUTION: YOU MUST REMOVE THE REAR PINTLE PIN FIRST.

(1) Remove and discard the lockwire from the half-seals (25) and (26).
(2) Remove the half-seals (25) and (26). Make sure that the anti-rotation washer (24) has not moved.
(3) Install the 98D32104190001 TOOL - R I (MLG FWD AND REAR PINTLE PINS) between the forward and the rear pintles and set it to remove the rear pintle pin.
(4) Carefully turn the nut of the 98D32104190001 TOOL - R I (MLG FWD AND REAR PINTLE PINS) until the rear pintle pin (20) is removed.
(5) Set and install the 98D32104190001 TOOL - R I (MLG FWD AND REAR PINTLE PINS) to remove the forward pintle pin (27).
(6) Carefully turn the nut of the 98D32104190001 TOOL - R I (MLG FWD AND REAR PINTLE PINS) until the forward pintle pin (27) is removed.
(7) Remove the 98D32104190001 TOOL - R I (MLG FWD AND REAR PINTLE PINS) from the MLG leg assembly.
(8) Remove and discard the O-ring (31).
(9) Put the CFD1142-10-000 TROLLEY-HANDLING, MLG or the CFD1142-30-000 TROLLEY-HANDLING, MLG or the CFD1142-00-000 TROLLEY-HANDLING, MLG in position.
(a) If you will install the same MLG that is removed, use the CFD1142-10-000 TROLLEY-HANDLING, MLG or the CFD1142-00-000 TROLLEY-HANDLING, MLG.
(b) If you will install a replacement MLG, use the CFD1142-30-000 TROLLEY-HANDLING, MLG or the CFD1142-00-000 TROLLEY-HANDLING, MLG.
(10) Operate the 98D32104002000 EQUIPMENT-MLG REMOVAL INSTALLATION to lower the MLG leg assembly:
(a) Attach the drive-link between the forward rail assembly (110) and the aft rail assembly (108).
(b) Turn the drive-link so that the MLG leg assembly moves inboard as far as possible.
(c) Operate the mini-hoists (113) and (114) and carefully lower the MLG leg assembly onto the CFD1142-10-000 TROLLEY-HANDLING, MLG or the CFD1142-30-000 TROLLEY-HANDLING, MLG or the CFD1142-00-000 TROLLEY-HANDLING, MLG.
(11) Safety the MLG leg assembly on the CFD1142-10-000 TROLLEY-HANDLING, MLG or the CFD1142-30-000 TROLLEY-HANDLING, MLG or the CFD1142-00-000 TROLLEY-HANDLING, MLG.

Subtask 32-11-11-020-054-D ** ON A/C NOT FOR ALL

F. Removal of the MLG Leg Assembly

(1) Remove and discard the lockwire from the bolt (22).
(2) Remove the bolt (22).
(3) Carefully remove the lubrication fitting (21) from the rear pintle pin (20).
(4) Remove and discard the O-rings (23).
(5) Remove and discard the cotter pins (34).
(6) Remove the nuts (33), the spacers (32) and the nylon washers (31).
(7) Remove and discard the laminated shims (30).
(8) Remove the lockbolts (29) and the radius washers (28).

NOTE: It is important to keep a record of the initial positions of all the removed components. The positions of all the components must be identified as you remove them.

(9) Remove the wire (16):

NOTE: Clean all the related parts before removal of the wire. This will make the removal of the wire easier.

(a) Use an applicable tool to release the tail of the wire (16) from the key slot in the lock-washer (17).
(b) Use PLIERS - CIRCLIP to hold the tail of the wire (16).
(c) Carefully pull the wire (16) (in a clockwise direction) until it releases from the chamfered slot in the nut (18).
(10) Remove the lock-washer (17) from the nut (18).
(11) Use the 98D32104005000 SPANNER-MLG REAR PINTLE to remove the nut (18) and the washer (19) from the rear pintle pin (20).

Subtask 32-11-11-020-050-H ** ON A/C NOT FOR ALL

G. Removal of the Pintle Pins

CAUTION: YOU MUST REMOVE THE REAR PINTLE PIN FIRST.

(1) Remove and discard the lockwire from the half-seals (25) and (26).
(2) Remove the half-seals (25) and (26). Make sure that the anti-rotation washer (24) has not moved.
(3) Install the 98D32104190001 TOOL - R I (MLG FWD AND REAR PINTLE PINS) between the forward and the rear pintles and set it to remove the rear pintle pin.
(4) Carefully turn the nut of the 98D32104190001 TOOL - R I (MLG FWD AND REAR PINTLE PINS) until the rear pintle pin (20) is removed.
(5) Set and install the 98D32104190001 TOOL - R I (MLG FWD AND REAR PINTLE PINS) to remove the forward pintle pin (27).
(6) Carefully turn the nut of the 98D32104190001 TOOL - R I (MLG FWD AND REAR PINTLE PINS) until the forward pintle pin (27) is removed.
(7) Remove the 98D32104190001 TOOL - R I (MLG FWD AND REAR PINTLE PINS) from the MLG leg assembly.
(8) Remove and discard the O-ring (36).
(9) Put the CFD1142-10-000 TROLLEY-HANDLING, MLG or the CFD1142-30-000 TROLLEY-HANDLING, MLG or the CFD1142-00-000 TROLLEY-HANDLING, MLG in position.
(a) If you will install the same MLG that is removed, use the CFD1142-10-000 TROLLEY-HANDLING, MLG or the CFD1142-00-000 TROLLEY-HANDLING, MLG.
(b) If you will install a replacement MLG, use the CFD1142-30-000 TROLLEY-HANDLING, MLG or the CFD1142-00-000 TROLLEY-HANDLING, MLG.
(10) Operate the 98D32104002000 EQUIPMENT-MLG REMOVAL INSTALLATION to lower the MLG leg assembly:
(a) Attach the drive-link between the forward rail assembly (110) and the aft rail assembly (108).
(b) Turn the drive-link so that the MLG leg assembly moves inboard as far as possible.
(c) Operate the mini-hoists (113) and (114) and carefully lower the MLG leg assembly onto the CFD1142-10-000 TROLLEY-HANDLING, MLG or the CFD1142-30-000 TROLLEY-HANDLING, MLG or the CFD1142-00-000 TROLLEY-HANDLING, MLG.
(11) Safety the MLG leg assembly on the CFD1142-10-000 TROLLEY-HANDLING, MLG or the CFD1142-30-000 TROLLEY-HANDLING, MLG or the CFD1142-00-000 TROLLEY-HANDLING, MLG.

Subtask 32-11-11-020-054-E ** ON A/C NOT FOR ALL

H. Removal of the MLG Leg Assembly

(1) Remove and discard the lockwire from the bolt (21).
(2) Remove the bolt (21).
(3) Carefully remove the lubrication fitting (20) from the rear pintle pin (19).
(4) Remove and discard the O-rings (22).
(5) Remove and discard the cotter pins (36).
(6) Remove the nuts (35), the spacers (34) and the nylon washers (33).
(7) Remove and discard the laminated shims (32).
(8) Remove the lockbolt (28), the lockbolt (30) and the radius washers (27).

NOTE: It is important to keep a record of the initial positions of all the removed components. The positions of all the components must be identified as you remove them.

NOTE: Do not remove the bowden cable (29) from the lockbolts. The bowden cable attaches the two different diameter lockbolts together to prevent installation of incorrect type pintle pin or lockbolts.

(9) Remove the wire (16):

NOTE: Clean all the related parts before removal of the wire. This will make the removal of the wire easier.

(a) Use an applicable tool to release the tail of the wire (16) from the key slot in the lock-washer (17).
(b) Use PLIERS - CIRCLIP to hold the tail of the wire (16).
(c) Carefully pull the wire (16) (in a clockwise direction) until it releases from the chamfered slot in the nut (18).
(10) Remove the lock-washer (17) from the nut (18).
(11) Use the 98D32104080000 SPANNER - MLG REAR PIN to remove the nut (18) from the rear pintle pin (19).

Subtask 32-11-11-020-050-I ** ON A/C NOT FOR ALL

I. Removal of the Pintle Pins

CAUTION: YOU MUST REMOVE THE REAR PINTLE PIN FIRST.

(1) Remove and discard the lockwire from the half-seals (24) and (25).
(2) Remove the half-seals (24) and (25). Make sure that the anti-rotation washer (23) has not moved.
(3) Install the 98D32104190002 TOOL - R I (MLG FWD AND REAR PINTLE PINS) between the forward and the rear pintles and set it to remove the rear pintle pin.
(4) Carefully turn the nut of the 98D32104190002 TOOL - R I (MLG FWD AND REAR PINTLE PINS) until the rear pintle pin (19) is removed.
(5) Set and install the 98D32104190002 TOOL - R I (MLG FWD AND REAR PINTLE PINS) to remove the forward pintle pin (31).
(6) Carefully turn the nut of the 98D32104190002 TOOL - R I (MLG FWD AND REAR PINTLE PINS) until the forward pintle pin (31) is removed.
(7) Remove the 98D32104190002 TOOL - R I (MLG FWD AND REAR PINTLE PINS) from the MLG leg assembly.
(8) Remove and discard the O-ring (38).
(9) Put the CFD1142-10-000 TROLLEY-HANDLING, MLG or the CFD1142-30-000 TROLLEY-HANDLING, MLG or the CFD1142-00-000 TROLLEY-HANDLING, MLG in position.
(a) If you will install the same MLG that is removed, use the CFD1142-10-000 TROLLEY-HANDLING, MLG or the CFD1142-00-000 TROLLEY-HANDLING, MLG.
(b) If you will install a replacement MLG, use the CFD1142-30-000 TROLLEY-HANDLING, MLG or the CFD1142-00-000 TROLLEY-HANDLING, MLG.
(10) Operate the 98D32104002002 EQUIPMENT MLG, REMOVAL INSTALLATION or the 98D32104002003 EQUIPMENT-MLG, REMOVAL INSTALLATION to lower the MLG leg assembly:
(a) Attach the drive-link between the forward rail assembly (110) and the aft rail assembly (108).
(b) Turn the drive-link so that the MLG leg assembly moves inboard as far as possible.
(c) Operate the mini-hoists (113) and (114) and carefully lower the MLG leg assembly onto the CFD1142-10-000 TROLLEY-HANDLING, MLG or the CFD1142-30-000 TROLLEY-HANDLING, MLG or the CFD1142-00-000 TROLLEY-HANDLING, MLG.
(11) Safety the MLG leg assembly on the CFD1142-10-000 TROLLEY-HANDLING, MLG or the CFD1142-30-000 TROLLEY-HANDLING, MLG or the CFD1142-00-000 TROLLEY-HANDLING, MLG.

Subtask 32-11-11-080-050-A ** ON A/C NOT FOR ALL

J. Removal of the Support Equipment
(1) If the MLG is to be replaced, remove the 98D32104002000 EQUIPMENT-MLG REMOVAL INSTALLATION or the 98D32104002001 EQUIPMENT-MLG REMOVAL INSTALLATION from the leg assembly:
(a) Disconnect the lifting cables from the lifting beam (105).
(b) Remove the lifting beam (105) from the leg assembly.
(c) Remove the 98D32104010000 INTERFACE BRACKET (106) from the MLG drag stay.

Subtask 32-11-11-080-050-B ** ON A/C NOT FOR ALL

J. Removal of the Support Equipment

Main Leg Assembly - Detail of Removal/Installation Equipment ** ON A/C NOT FOR ALL

(1) If the MLG is to be replaced, remove the 98D32104002002 EQUIPMENT MLG, REMOVAL INSTALLATION or the 98D32104002003 EQUIPMENT-MLG, REMOVAL INSTALLATION from the leg assembly:
(a) Disconnect the lifting cables from the lifting beam (105).
(b) Remove the lifting beam (105) from the leg assembly.
(c) Remove the 98D32104010000 INTERFACE BRACKET (106) from the MLG drag stay.

Subtask 32-11-11-020-055-B ** ON A/C NOT FOR ALL

K. Complete the Removal Procedure

(1) Remove and discard the lockwire from the bolts (32).
(2) Remove the bolts (32) and the seal plate halves (30).
(3) Remove the sleeve (15) from the rear pintle mounting.
(4) Install the blanking caps to the forward and rear pintles.

Subtask 32-11-11-020-055-C ** ON A/C NOT FOR ALL

K. Complete the Removal Procedure

(1) Remove and discard the lockwire from the bolts (37).
(2) Remove the bolts (37) and the seal plate halves (35).
(3) Remove the sleeve (15) from the rear pintle mounting.
(4) Install the blanking caps to the forward and rear pintles.

Subtask 32-11-11-020-055-D ** ON A/C NOT FOR ALL

K. Complete the Removal Procedure

(1) Remove and discard the lockwire from the bolts (39).
(2) Remove the bolts (39) and the seal plate halves (37).
(3) Remove the sleeve (15) from the rear pintle mounting.
(4) Install the blanking caps to the forward and rear pintles.

[Rev.10 from 2021] 2026.04.01 03:58:46 UTC