Replacement of the Shear-Pins

TASK 32-33-17-350-001-A
Replacement of the Shear-Pins

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.

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	PIN DRIFT
No specific	AR	SAFETY BARRIER(S)
No specific	1	WARNING NOTICE(S)

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.03GBD1)	Synthetic Oil base Grease-General Purpose Lithium Thickened -
(Material No.08BAA9)	Non Aqueous Cleaner-General - -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
242FF

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
39	SHEAR-PINS	AIPC 32-33-03-32-040
24	COTTER-PIN	AIPC 32-33-03-32-170

E. Referenced Information

REFERENCE	DESIGNATION
TASK 24-42-00-861-001-A	Energize the Ground Service Network from the External Power
TASK 24-42-00-862-001-A	De-energize the Ground Service Network Supplied from the External Power
TASK 25-21-41-000-001-A	Removal of the Passenger Seats
TASK 25-21-41-400-001-A	Installation of the Passenger Seats
TASK 25-28-41-000-001-A	Removal of the Textile Floor Covering
TASK 25-28-41-400-001-A	Installation of the Textile Floor Covering
TASK 32-00-00-481-001-A	Installation of the Safety Devices on the Landing Gears
TASK 32-12-00-010-001-A	Open the Main Gear Doors for 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 53-32-12-000-002-A	Removal of the Cabin Floor Panels
TASK 53-32-12-400-002-A	Installation of the Cabin Floor Panels
Pulley Assembly

3. Job Set-up
Subtask 32-33-17-861-051-A

A. Energize the ground service network
(Ref. AMM TASK 24-42-00-861-001)

Subtask 32-33-17-941-052-A

B. 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 ground safety locks are on the landing gear (Ref. AMM TASK 32-00-00-481-001).
(3) On the 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 the panel 110VU, make sure that the GRAVITY GEAR EXTN handle is folded into the center console.

Subtask 32-33-17-010-051-A

C. Get Access
(1) Open the right MLG door (Ref. AMM TASK 32-12-00-010-001).
(2) Make sure that the 460005835 SLEEVE - GROUND LOCK is on the applicable main gear door actuator.
(3) Remove the right hand passenger seats between frame 36 and 42 (Ref. AMM TASK 25-21-41-000-001).
(4) Remove the center floor covering between frame 36 and frame 42 (Ref. AMM TASK 25-28-41-000-001).
(5) Remove the floor panel 242FF (Ref. AMM TASK 53-32-12-000-002).

Subtask 32-33-17-560-050-A

D. Remove the MLG Free-Fall Extension Cables

Pulley Assembly

(1) Remove the locking clips (30).
(2) Put match marks on the cables before you loosen them.
(3) Loosen the turnbuckles (31) from the cables (32) and (33).
(4) Remove the cables from the pulley assembly (34).

4. Procedure
Subtask 32-33-17-350-050-A

A. Replacement of the Shear-Pins
(1) Turn the pulley assembly (34) until you can get access to the shear pins (39).
(2) Remove and discard the cotter pins (35).
(3) Remove the castellated nuts (36) the washers (37) and the bolts (40).
(4) Remove the lock plates (38).
(5) Remove the top half of the shear-pins (39).
(6) Use a PIN DRIFT parallel pin punch and push the sheared-off part of the shear-pins through the pulley assembly (34).
(7) Remove the debris from the pulley assembly (34).
(8) Clean the pulley assembly (34) and the adjacent area with a Textile-Lint free Cotton - (Material No.14SBA1) made moist with Non Aqueous Cleaner-General - - (Material No.08BAA9) .
(9) Apply Synthetic Oil base Grease-General Purpose Lithium Thickened - (Material No.03GBD1) to the new AIPC 32-33-03-32-040 SHEAR-PINS (39)
(10) Make sure that the shear-pin holds in the pulley assembly (34) and in the pulleys (41) are in line.
(11) Install the shear-pins (39).
(12) Put the lock plates (38) in position.
(13) Install the bolts (40) the washers (37) and the castellated nuts (36).
(14) Safety the castellated nuts (36) with the new AIPC 32-33-03-32-170 COTTER-PIN (24).
(15) Install and adjust the MLG free-fall extension cables (32) and (33) on the pulley assembly (34) as follows:

Pulley Assembly

(a) Put the cables (32) and (33) in position in the pulley assembly (34).
(b) Connect each cable to its related cable with the turnbuckles (31)
(c) Temporarily attach the locking pins (30).
(d) Adjust the free-fall extension cables (Ref. AMM TASK 32-33-00-820-003).
(e) Do a cable tension check on the free-fall extension cables that were loosened (Ref. AMM TASK 32-33-00-200-001).

Subtask 32-33-17-720-051-A

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

5. Close-up
Subtask 32-33-17-410-051-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Do the applicable steps that follow:
(a) Install the cabin floor panel 242FF (Ref. AMM TASK 53-32-12-400-002).
(b) Install the cabin floor covering (Ref. AMM TASK 25-28-41-400-001).
(c) Install the passenger seats that were removed (Ref. AMM TASK 25-21-41-400-001).

Subtask 32-33-17-942-051-A

B. Put the system back to the serviceable condition.
(1) Remove the WARNING NOTICE(S).
(2) Remove the ground support and maintenance equipment, the special and standard tools and all other items.

Subtask 32-33-17-862-051-A

C. Energize the ground service network
(Ref. AMM TASK 24-42-00-862-001)

[Rev.10 from 2021] 2026.04.01 00:46:47 UTC