Detailed Inspection of Forward Pintle Pin Lock Bolt Installation

TASK 32-11-11-200-003-A
Detailed Inspection of Forward Pintle Pin Lock Bolt Installation

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.

ZONE: 731
ZONE: 741

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)
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)
No specific	Torque wrench: range to between 0.55 and 0.45 m.daN (48.67 and 39.82 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.04JMD3)	Top Coat Polyurethane-- Decorative External Structure
(Material No.04QAB2)	Coating_- Flexible Structure
(Material No.06ABB1)	Polysulfide Sealant-Fuel Tank Fillet -
(Material No.06AJD1)	Polysulfide Sealant-Corrosion inhibitive Sprayable -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
731	L.H MAIN GEAR
741	R.H MAIN GEAR

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
4	COTTER PIN	AIPC 32-11-05-02-130
7	WASHER	AIPC 32-11-11-66-100

E. Referenced Information

REFERENCE	DESIGNATION
TASK 12-22-32-640-001-A	Lubrication of Main Landing Gear and Doors
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 29-10-00-863-001-A	Pressurize the Green Hydraulic System with a Hydraulic Ground Power-Cart
TASK 29-10-00-863-002-A	Pressurize the Yellow Hydraulic System with a Hydraulic Ground Power-Cart
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 29-14-00-614-002-A	Pressurization of the Hydraulic Reservoirs through the Ground Connector
TASK 29-14-00-614-002-A-01	Pressurization of the Hydraulic Reservoirs with the Auxiliary Power Unit (APU)
TASK 29-23-00-860-001-A	Disconnection of the Isolation Coupling of the Power Transfer Unit (PTU)
TASK 29-23-00-860-002-A	Connection 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 32-00-00-860-002-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 32-11-11-000-001-A	Removal of the MLG Leg Assembly
TASK 32-11-11-400-001-A	Installation of the MLG Leg Assembly
CMM 321107	(for corrective action)
MLG Forward Pintle Pin and Lockbolt ** ON A/C NOT FOR ALL
Spherical Bearing - MLG Forward Pintle Pin ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 32-11-11-941-059-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) Put the SAFETY BARRIER(S) in position.
(2) On the panel 400VU:

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

(3) Put a WARNING NOTICE(S) on the ground service connection to tell persons not to pressurize:

The Green hydraulic system
The Yellow hydraulic system.

(4) Make sure that the ground safety locks are on the landing gear (Ref. AMM TASK 32-00-00-481-001).

Subtask 32-11-11-860-067-A ** ON A/C NOT FOR ALL

B. Aircraft Maintenance Configuration
(1) Disconnect the isolation coupling of the PTU (Ref. AMM TASK 29-23-00-860-001).
(2) Depressurize the Green and the Yellow hydraulic systems (Ref. AMM TASK 29-10-00-864-001), (Ref. AMM TASK 29-10-00-864-002).
(3) Depressurize the applicable hydraulic reservoirs (Ref. AMM TASK 29-14-00-614-001).

Subtask 32-11-11-869-060-A ** ON A/C NOT FOR ALL

C. 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 circuit breakers.

Subtask 32-11-11-865-059-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	L/G/LGCIU/SYS1/NORM	1GA	C09
121VU	HYDRAULIC/LGCIU/SYS2	2GA	Q35
121VU	HYDRAULIC/LGCIU/SYS1/GRND SPLY	52GA	Q34
121VU	LGCIU/BAT SPLY/SYS2	59GA	R33
121VU	LGCIU/BAT SPLY/SYS1	58GA	R32

Subtask 32-11-11-010-061-A ** ON A/C NOT FOR ALL

E. Get Access
(1) Put the ACCESS PLATFORM 3M (10 FT) below the applicable MLG forward pintle pin, zone 571 or 671.

Subtask 32-11-11-140-051-A ** ON A/C NOT FOR ALL

F. Preparation for Inspection
(1) Clean the area around the forward pintle pin (6) with Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) . Make sure that the sealant on the head of the lockbolt (1) and on the nut (3) can be clearly seen.

4. Procedure
Subtask 32-11-11-210-061-A ** ON A/C NOT FOR ALL

A. Detailed Inspection of Forward Pintle Pin Lock Bolt Installation
(1) Examine the forward pintle pin and make sure that:

The lockbolt (1) is not missing
The sealant on the head of the lockbolt (1) is not cracked or broken. Cracked or broken sealant shows that movement of the lockbolt (1) has occurred.

(2) If the lockbolt (1) is missing, do the detailed visual inspection of the forward pintle pin and spherical bearing at Para 4.C.
(3) If the lockbolt (1) is in position but the sealant is cracked or broken, do the detailed visual inspection of the lockbolt at Para 4.B.
(4) If the lockbolt (1) is in position and the sealant is not cracked or broken, lubricate the spherical bearing (18) through the greasers (17) (Ref. AMM TASK 12-22-32-640-001).

Subtask 32-11-11-210-062-B ** ON A/C NOT FOR ALL

B. Detailed Visual Inspection of the Lockbolt
(1) If the sealant on the head of the lockbolt (1) is cracked or broken, do the steps that follow:
(a) Remove the cracked or broken sealant from the head of the lockbolt (1) and the nut (3).
(b) Remove and discard the cotter pin (4). Remove the nut (3) and the washer (5) from the lockbolt (1).
(c) Remove the lockbolt (1) and the washer (7) from the forward pintle (2). If it is damaged, discard the washer (7).
(d) Make sure that the lockbolt (1) is not bent or damaged. Replace a bent or damaged lockbolt (1).
(e) Install a new or not damaged AIPC 32-11-11-66-100 WASHER (7), the lockbolt (1), the washer (5) and the nut (3). Make sure the lockbolt (1) goes through the lugs on the pintle pin (6) with the head inboard.
(f) TORQUE the nut (3) to between 0.55 and 0.45 m.daN (48.67 and 39.82 lbf.in )

.
(g) Safety the nut (3) with a new AIPC 32-11-05-02-130 COTTER PIN (4). If the hole for the cotter pin (4) does not align, loosen the nut (3) sufficiently to align the hole.

NOTE: After the cotter pin is installed, a maximum end float of 0.25 mm (0.0098 in.) of the lockbolt (1) is permitted.

(h) Apply Polysulfide Sealant-Corrosion inhibitive Sprayable - (Material No.06AJD1) or Polysulfide Sealant-Fuel Tank Fillet - (Material No.06ABB1) to the lockbolt (1), the nut (3), the cotter pin (4) and the washers (5) and (7).
(i) Apply a layer of Coating_- Flexible Structure (Material No.04QAB2) or Top Coat Polyurethane-- Decorative External Structure (Material No.04JMD3) on all the sealant.
(j) Lubricate the spherical bearing (18) through the greasers (17) (Ref. AMM TASK 12-22-32-640-001).

Subtask 32-11-11-210-063-A ** ON A/C NOT FOR ALL

C. Detailed Visual Inspection of the Forward Pintle Pin and Spherical Bearing
(1) If the lockbolt (1) is missing, do the steps that follow:
(a) Remove the MLG Leg Assembly (Ref. AMM TASK 32-11-11-000-001).
(b) Examine the pintle pin (6) for damage. Replace a damaged pintle pin (6).
(c) Do an eddy current or dye penetrant test on the lugs of the pintle pin (6) CMM 321107. Make sure that there are no cracks around the holes of the lockbolt (1). Replace a cracked pintle pin (6).
(d) Examine the pintle pin (6) bushes in the forward pintle (2) for signs of damage.
(e) Make sure that the lockbolt (1) bushes are correctly positioned in the forward pintle (2). Examine the bushes and make sure that they are not damaged.
(2) Examine the spherical bearing (18):
(a) Push the pintle pin (6) into the spherical bearing (18).
(b) Use the pintle pin (6) to move the spherical bearing (18) around its center axis. Make sure that the spherical bearing (18) moves freely with hand pressure only.
(c) Record the condition of the spherical bearing (18) and send the data to the Design Authority. This is so that, the relation between a tight spherical bearing (18) and a missing lockbolt (1) can be monitored.
(d) Remove the pintle pin (6) from the spherical bearing (18).
(e) Remove the greasers (17) from the spherical bearing (18).
(f) Fully clean the greasers (17) with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(g) Install the greasers (17) in the spherical bearing (18).
(h) Lubricate the spherical bearing (18) through the greasers (17) (Ref. AMM TASK 12-22-32-640-001). Lubricate until clean grease comes out of the bore of the spherical bearing (18).
(i) Push the pintle pin (6) into the spherical bearing (18).
(j) Use the pintle pin (6) to move the spherical bearing (18) around its center axis. Make sure that the spherical bearing (18) moves freely with hand pressure only.
(k) If the spherical bearing does not move, refer to the Design Authority for an approved repair procedure.
(l) Remove the pintle pin (6) from the spherical bearing (18).
(3) Install the MLG Leg Assembly (Ref. AMM TASK 32-11-11-400-001).

5. Close-up
Subtask 32-11-11-942-057-A ** ON A/C NOT FOR ALL

A. Removal of Equipment
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Remove the access platform(s).

Subtask 32-11-11-865-060-A ** ON A/C NOT FOR ALL

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

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

Subtask 32-11-11-869-061-A ** ON A/C NOT FOR ALL

C. Aircraft Maintenance Configuration
(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).
(2) Connect the isolation coupling of the PTU (Ref. AMM TASK 29-23-00-860-002).
(3) Pressurize the Green and the Yellow hydraulic systems (Ref. AMM TASK 29-10-00-863-001), (Ref. AMM TASK 29-10-00-863-002).
(4) Pressurize the applicable hydraulic reservoirs (Ref. AMM TASK 29-14-00-614-002).

Subtask 32-11-11-942-058-A ** ON A/C NOT FOR ALL

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

[Rev.10 from 2021] 2026.04.01 00:40:01 UTC