Installation of the MLG Free-Fall Extension Cables

TASK 32-33-16-400-002-A
Installation of the MLG Free-Fall Extension Cables

WARNING: MAKE SURE THAT THE FLIGHT CONTROL SAFETY-LOCKS AND THE WARNING NOTICES ARE IN POSITION.

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: 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	SAFETY BARRIER(S)
No specific	1	WARNING NOTICE(S)
No specific	2	WEDGE - NON METALLIC
98A27801001000	1	RIGGING PIN
98DNSA20208060	1	RIGGING PIN
98DNSA20208150	1	RIGGING PIN

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.04QAB2)	Coating_- Flexible Structure
(Material No.06AEB2)	Polysulfide Sealant-Low Adhesion Fillet Structure
(Material No.06LCG9)	Non Hardening Jointing Putty-Medium Temp. Area - -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14QFB1)	Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
822, 824, 825

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
4	COTTER-PIN	AIPC 32-33-01-10-050
55	COTTER-PINS	AIPC 32-33-03-03-170
77	COTTER-PINS	AIPC 32-33-03-03-170
14	COTTER PIN	AIPC 32-33-03-04-030
8	COTTER-PINS	AIPC 32-33-03-05-060
11	COTTER-PIN	AIPC 32-33-03-30-030
80	COTTER-PINS	AIPC 32-33-03-36-060
54	COTTER-PINS	AIPC 32-33-03-38-040
55	COTTER-PINS	AIPC 32-33-83-03-280
77	COTTER-PINS	AIPC 32-33-83-03-280
14	COTTER PIN	AIPC 32-33-83-05-010

E. Referenced Information

REFERENCE	DESIGNATION
TASK 05-53-00-780-003-A	Pressurization Test to Measure Structural Air Leakage
TASK 05-53-00-780-003-A-01	Pressurization Test to Measure Structural Air Leakage (with the AIDS)
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 25-54-12-000-001-A	Removal of the Forward Cargo-Compartment Partition
TASK 25-54-12-000-002-A	Removal of the Ceiling Panels in the Forward Cargo Compartment
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 32-00-00-860-001-A	Flight Configuration Precautions with Electrical Power
TASK 32-00-00-860-001-A-01	Flight Configuration Precautions without Electrical Power
TASK 32-00-00-860-002-A	Ground Configuration after Flight Configuration with Electrical Power
TASK 32-00-00-860-002-A-01	Ground Configuration after Flight Configuration without Electrical Power
TASK 32-12-00-010-001-A	Open the Main Gear Doors for Access
TASK 32-12-00-410-001-A	Close the Main Gear Doors after Access
TASK 32-33-00-200-001-A	Functional Check of Free-fall Mechanism Cable Tension
TASK 32-33-00-720-001-A	Functional Check of Free-Fall Extension
TASK 32-33-00-820-003-A	Adjustment of the MLG Free-Fall Extension Cable System
TASK 52-30-00-860-001-A	Open the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-30-00-860-002-A	Close the FWD or Aft Cargo-Compartment Door with the Yellow Electric Pump
TASK 52-41-00-010-002-A	Open the Avionics Compartment Doors for Access
TASK 52-41-00-410-002-A	Close the Avionics Compartment Doors after Access
TASK 53-12-11-000-001-A	Removal of the Cockpit Floor Panels from FR1 thru FR12
TASK 53-12-12-000-001-A	Removal of the Cabin Floor Panels from FR12 thru FR24
TASK 53-32-12-000-002-A	Removal of the Cabin Floor Panels
TASK 06-41-53-00	FUSELAGE-DESCRIPTION AND OPERATION
Location of the Rigging Pins ** ON A/C NOT FOR ALL
Location of the Rigging Pins ** ON A/C NOT FOR ALL
Free-fall Extension Cables - MLG (FR 41 to FR 43)
Free-fall Extension Cables - MLG (FR 41 to FR 43)
Free-Fall Extension Cables - MLG (FR41 to FR43)
Free-Fall Extension Cables - MLG (FR7 to FR41) ** ON A/C NOT FOR ALL
Free-Fall Extension Cables - MLG (FR 7 to FR 41) ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 32-33-16-941-053-A

A. Safety Precautions
(1) Make sure that the SAFETY BARRIER(S) are in position.
(2) Make sure that the ground safety locks are 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
make sure that the WARNING NOTICE(S) is in position to tell persons not to operate the landing gear.

(4) On panel 110VU, make sure that the GRAVITY GEAR EXTN handle is folded into the center console.
(5) Make sure that a WEDGE - NON METALLIC is on each side of the GRAVITY GEAR EXTN handle to lock the handle in position.

Subtask 32-33-16-010-054-A

B. Get Access

Location of the Rigging Pins ** ON A/C NOT FOR ALL

(1) Make sure that the MLG doors are open for access (Ref. AMM TASK 32-12-00-010-001).
(2) Make sure that the safety devices are installed on each MLG door (Ref. AMM TASK 32-00-00-481-002).
(3) Make sure that avionics compartment doors 822 and 824 are open for access (Ref. AMM TASK 52-41-00-010-002).
(4) Make sure that forward cargo-compartment door 825 is open (Ref. AMM TASK 52-30-00-860-001).
(5) Make sure that the access panels that follow are removed:
For location of the access panels, (Ref. AMM D/O 06-41-53-00).
(a) In zones 131 and 132:
1 Make sure that the applicable ceiling panels in the forward cargo compartment between FR25 and FR34 are removed (Ref. AMM TASK 25-54-12-000-002).
2 Make sure that the forward cargo-compartment partition at FR34 is removed (Ref. AMM TASK 25-54-12-000-001).
(b) In zone 212:
1 Make sure that the applicable cockpit floor panels between FR8 and FR12 are removed (Ref. AMM TASK 53-12-11-000-001).
(c) In zones 222 and 232:
1 Make sure that the applicable cabin floor panels between FR12 and FR24 are removed (Ref. AMM TASK 53-12-12-000-001).
(d) In zones 241 and 242:
1 Make sure that the applicable cabin floor panels between FR35 and FR47 are removed (Ref. AMM TASK 53-32-12-000-002).
(6) For the cables (13), (15), (25) and (27):

Make sure that the 98A27801001000 RIGGING PIN is in the Pin 1 position.
Make sure that the 98DNSA20208150 RIGGING PIN is in the Pin 2 position.

(7) For the cables (37), (38), (39) and (40):

Make sure that the 98DNSA20208150 RIGGING PIN is in the Pin 2 position.
Make sure that the 98DNSA20208060 RIGGING PIN is in the Pin 3 position.

Subtask 32-33-16-869-057-A

C. Flight Configuration Precautions
(1) If you did not open the LGCIU circuit breakers, make sure that the electrical circuits are de-energized (Ref. AMM TASK 24-41-00-862-002).
(2) If you opened the LGCIU circuit breakers, make sure that the flight configuration precautions were obeyed (Ref. AMM TASK 32-00-00-860-001).

Subtask 32-33-16-865-054-A

D. 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 32-33-16-420-058-A

A. Preparation for Installation
(1) 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) .
(2) Make sure that the parts retained from the removed component are clean and in the correct condition.
(3) Do an inspection of the component interfaces and the adjacent area.

Subtask 32-33-16-420-052-A

B. Installation of the MLG Free-Fall Extension Cables (39) and/or (40)

Free-fall Extension Cables - MLG (FR 41 to FR 43)

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) Put the cable(s) (39) and/or (40) around the pulleys and through the structure.
(2) Attach the cable(s) (39) and/or (40) to the pulley (83).
(3) When necessary (for RH cables only) install the fairlead(s) (82).
(4) Release the cable(s) (37) and/or (38) from the structure.
(5) Connect each cable as necessary to its related cable with the turnbuckle(s) (41).
(6) Temporarily attach the locking clips (42).
(7) Install these items together:

The tubes (75) and the washers (76)
The tubes (78) and the washers (79).

(8) Safety the tubes with the new AIPC 32-33-03-03-170 COTTER-PINS (77) or the new AIPC 32-33-83-03-280 COTTER-PINS (77) and the new AIPC 32-33-03-36-060 COTTER-PINS (80).
(9) At the cable pulley assembly on FR 41, install these items together:

The cable guard assembly (85)
The pins (84), the washers (86) and the nuts (87).

(10) Safety the nuts (87) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.

Subtask 32-33-16-420-053-A

C. Installation of the MLG Free-Fall Extension Cables (37) and/or (38)

Free-fall Extension Cables - MLG (FR 41 to FR 43)

Free-Fall Extension Cables - MLG (FR41 to FR43)

(1) Clean the pressure-seal-flanges (58) and (60) with Non Aqueous Cleaner-General - - (Material No.08BAA9) to remove the sealant and paint.
(2) Put the sleeve (63) and the pressure-seal-flanges (58) and (60) on the applicable cable correctly.
(3) Put the cable(s) (37) and/or (38) around the pulleys and through the structure.
(4) Attach the cable(s) (37) and/or (38) to the pulley (65).
(5) Release the cable(s) (39) and/or (40) from the structure.
(6) Connect each cable as necessary to its related cable with the turnbuckle(s) (41).
(7) Temporarily attach the locking clips (42).

Subtask 32-33-16-420-054-A

D. Installation of the Cable Pressure Seals

(1) Apply Non Hardening Jointing Putty-Medium Temp. Area - - (Material No.06LCG9) to the pressure-seal-flanges (58) and (60) and the bolts (62).
(2) Assemble the cable pressure seal(s) with these items:

The swivel cable guides (59) (between the flanges)
The sleeve (63) and the retaining ring (64)
The washers (61) and the bolts (62).

(3) Tighten the bolts (62).
(4) Safety the bolts (62) with 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.
(5) Install these items at the cable pulley brackets:

The tubes (52) and the washers (53)
The tubes (57) and the washers (56)
The guide bolt (68), the washer (67) and the nut (66).

(6) Safety the tubes (52) with the new AIPC 32-33-03-38-040 COTTER-PINS (54).
(7) Safety the tubes (57) with the new AIPC 32-33-03-03-170 COTTER-PINS (55) or the new AIPC 32-33-83-03-280 COTTER-PINS (55).
(8) Apply Polysulfide Sealant-Low Adhesion Fillet Structure (Material No.06AEB2) to the heads of the bolts (62) and the outer edges of the pressure-seal-flanges (58) and (60).
(9) When the sealant is dry, apply Coating_- Flexible Structure (Material No.04QAB2) to the pressure-seal-flanges (58) and (60).

Subtask 32-33-16-420-055-A

E. Installation of the MLG Free-Fall Extension Cables (25) and/or (27)

Free-Fall Extension Cables - MLG (FR7 to FR41) ** ON A/C NOT FOR ALL

Free-Fall Extension Cables - MLG (FR 7 to FR 41) ** ON A/C NOT FOR ALL

(1) Put the cable(s) (25) and/or (27) in the structure.
(2) Attach the cable(s) (25) and/or (27) to the pulley (26).
(3) Release the cable(s) (13) and/or (15) from the structure.
(4) Connect each cable as necessary to its related cable with the turnbuckle(s) (23).
(5) Temporarily attach the locking clips (24).
(6) Install the cable-guide-fairleads (21) and the locking-devices (22) for the applicable cable(s).
(7) For the cable (27), install these items at the bracket (2) on the FR 12:

The spacer (3)
The bolt (1)
The washer (6)
The nut (5).

(8) Tighten the nut (5).
(9) Safety the nut (5) with a new AIPC 32-33-01-10-050 COTTER-PIN (4).
(10) Install these items together:

The cable guard(s) (17)
The spacers (19)
The bolts (18)
The nuts (20).

(11) Tighten the nuts (20).

Subtask 32-33-16-420-056-A

F. Installation of the MLG Free-Fall Extension Cables (13) and/or (15)

Free-Fall Extension Cables - MLG (FR7 to FR41) ** ON A/C NOT FOR ALL

Free-Fall Extension Cables - MLG (FR 7 to FR 41) ** ON A/C NOT FOR ALL

(1) Put the cable(s) (13) and/or (15) in the structure.
(2) Connect the cable (13) to the top of the pulley (16).
(3) Connect the cable (15) to the bottom of the pulley (16).
(4) Safety the cable(s) (13) and /or (15) with a new AIPC 32-33-03-04-030 COTTER PIN (14) or a new AIPC 32-33-83-05-010 COTTER PIN (14).
(5) Release the cable(s) (25) and/or (27) from the structure.
(6) Connect each cable as necessary to its related cable with the turnbuckle(s) (23).
(7) Temporarily attach the locking clips (24).
(8) Install the cable guide fairleads (21) and the locking-devices (22) for the applicable cable(s).
(9) Install these items together:

The tubes (7) and the washers (9)
The tube (10) and the washer (12).

(10) Safety the tubes (7) with the new AIPC 32-33-03-05-060 COTTER-PINS (8).
(11) Safety the tube (10) with a new AIPC 32-33-03-30-030 COTTER-PIN (11).

Subtask 32-33-16-820-051-A

G. Adjust the Tension of the Cables
(1) Adjust the tension of the free-fall extension system cables that have been loosened or replaced (Ref. AMM TASK 32-33-00-820-003).

Subtask 32-33-16-220-051-A

H. Cable Tension Check
(1) Do a cable tension check on the free-fall extension system cables that were not loosened or replaced (Ref. AMM TASK 32-33-00-200-001).

Subtask 32-33-16-080-051-A

I. Remove the Rigging Pins
(1) For the cables (37), (38), (39) and (40):

Location of the Rigging Pins ** ON A/C NOT FOR ALL

Free-fall Extension Cables - MLG (FR 41 to FR 43)

the 98DNSA20208150 RIGGING PIN in the position Pin 2
98DNSA20208060 RIGGING PIN in the applicable position Pin 3.

(2) For the cables (13), (15), (25) and (27):

Location of the Rigging Pins ** ON A/C NOT FOR ALL

Free-Fall Extension Cables - MLG (FR7 to FR41) ** ON A/C NOT FOR ALL

Free-Fall Extension Cables - MLG (FR 7 to FR 41) ** ON A/C NOT FOR ALL

the 98A27801001000 RIGGING PIN at position Pin 1
the 98DNSA20208150 RIGGING PIN at position Pin 2.

Subtask 32-33-16-410-052-A

J. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) On the panel 110VU, remove the WEDGE - NON METALLIC from each side of the GRAVITY GEAR EXTN handle.
(3) Close the MLG doors (Ref. AMM TASK 32-12-00-410-001).

Subtask 32-33-16-865-055-A

K. 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 32-33-16-720-051-A

L. Test
(1) Do a functional test of the free-fall extension system (Ref. AMM TASK 32-33-00-720-001).

Subtask 32-33-16-710-050-A

M. Test
(1) After replacement of the cables (37) and/or (38), do a leak test (Ref. AMM TASK 05-53-00-780-003).

Free-fall Extension Cables - MLG (FR 41 to FR 43)

5. Close-up
Subtask 32-33-16-869-055-A

A. Flight Configuration Precautions
(1) If you did not de-energize the aircraft electrical circuits, put the aircraft back to the ground configuration (Ref. AMM TASK 32-00-00-860-002).

Subtask 32-33-16-410-054-A

B. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the access panels that follow:
For location of the access panels, (Ref. AMM D/O 06-41-53-00).
(a) In zones 241 and 242:
1 Install the applicable cabin floor panels between FR35 and FR47 (Ref. AMM TASK 53-32-12-000-002).
(b) In zones 222 and 232:
1 Install the applicable cabin floor panels between FR12 and FR24 (Ref. AMM TASK 53-12-12-000-001).
(c) In zone 212:
1 Install the applicable cockpit floor panels between FR8 and FR12 (Ref. AMM TASK 53-12-11-000-001).
(d) In zones 131 and 132:
1 Install the forward cargo-compartment partition at FR34 (Ref. AMM TASK 25-54-12-000-001).
2 Install the applicable ceiling panels in the forward cargo compartment between FR25 and FR34 (Ref. AMM TASK 25-54-12-000-002).
(3) Close forward cargo-compartment door 825 (Ref. AMM TASK 52-30-00-860-002).
(4) Close avionics compartment doors 822 and 824 (Ref. AMM TASK 52-41-00-410-002).

Subtask 32-33-16-942-052-A

C. Removal of Equipment
(1) Remove the SAFETY BARRIER(S).
(2) Remove the WARNING NOTICE(S).
(3) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

[Rev.10 from 2021] 2026.04.01 00:46:43 UTC