Installation of the 63.5 Degree Bevel-Gearbox

TASK 27-84-43-400-001-A
Installation of the 63.5 Degree Bevel-Gearbox

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: MAKE SURE THAT THE TRAVEL RANGES OF THE FLIGHT CONTROLS SURFACES ARE CLEAR. MOVEMENT OF FLIGHT CONTROLS CAN CAUSE INJURY TO PERSONS AND/OR DAMAGE TO EQUIPMENT.

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: 190
FIN: 6009CM
FIN: 6011CM
FIN: 6059CM
FIN: 6061CM

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	ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE
No specific	AR	WARNING NOTICE(S)
98D27504030001	1	LOCK-TORQUE SHAFT (FLAPS AND SLATS) WITH CLAMP-PIVOT
98D27803000000	1	LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION
FOR [6009CM] (SLAT BEVEL GEARBOX)
FOR [6059CM] (SLAT BEVEL GEARBOX)
No specific	Torque wrench: range to between 9.6 and 7.8 m.N (84.96 and 69.03 lbf.in )
FOR [6011CM] (SLAT BEVEL GEARBOX)
FOR [6061CM] (SLAT BEVEL GEARBOX)
No specific	Torque wrench: range to between 9.6 and 7.8 m.N (84.96 and 69.03 lbf.in )

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.06AEB2)	Polysulfide Sealant-Low Adhesion Fillet Structure
(Material No.08BBB1)	Non Aqueous Cleaner-- Petroleum Based -
FOR [6009CM] (SLAT BEVEL GEARBOX)
FOR [6059CM] (SLAT BEVEL GEARBOX)
(Material No.12ACB1)	Corrosion Preventive Compound-Heavy Duty Hard Film -
FOR [6011CM] (SLAT BEVEL GEARBOX)
FOR [6061CM] (SLAT BEVEL GEARBOX)
(Material No.12ACB1)	Corrosion Preventive Compound-Heavy Duty Hard Film -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
190	BELLY FAIR, AIR CONDITIONING & HYD COMPT
FOR [6009CM] (SLAT BEVEL GEARBOX)
FOR [6011CM] (SLAT BEVEL GEARBOX)
191BB, 191BT, 191CT
FOR [6059CM] (SLAT BEVEL GEARBOX)
FOR [6061CM] (SLAT BEVEL GEARBOX)
192BT, 192CT, 192FB

D. Referenced Information

REFERENCE	DESIGNATION
TASK 20-28-00-912-803-A	Bonding Surface Preparation
TASK 27-00-00-080-002-A	Removal of the Flap/Slat Control-Lever Locking Tool (98D27803000000)
TASK 27-00-00-480-002-A	Installation of the Flap/Slat Control-Lever Locking Tool (98D27803000000)
TASK 27-50-00-400-003-A	Installation of the Lock-Torque Shaft - Flaps and Slats (98D27504030001)
TASK 27-80-00-866-005-A	Retracting the Slats on the Ground
TASK 27-84-00-710-001-A	Operational Test of the Slat System
TASK 27-84-45-400-005-A	Installation of the Torque Shafts 6010CM and 6060CM
TASK 29-00-00-864-001-A	Put the Related Hydraulic System in the Depressurized Configuration before Maintenance Action
63.5 Degree Bevel-Gearbox
FOR [6009CM] (SLAT BEVEL GEARBOX)
FOR [6059CM] (SLAT BEVEL GEARBOX)
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
TASK 27-84-45-400-004-A	Installation of the Torque Shaft
FOR [6009CM] (SLAT BEVEL GEARBOX)
FOR [6011CM] (SLAT BEVEL GEARBOX)
TASK 27-50-00-000-003-A	Removal of the Lock-Torque Shaft - Flaps and Slats (98D27504030001)
TASK 53-35-11-000-001-A	Removal of the Wing-to-Fuselage Fairings
TASK 53-35-11-400-001-A	Installation of the Wing-to-Fuselage Fairings
TASK 53-35-13-000-002-A	Removal of the Quick-Release Access Panels from the Belly Fairing Structure
TASK 53-35-13-400-002-A	Installation of the Quick-Release Access Panels on the Belly Fairing Structure
FOR [6011CM] (SLAT BEVEL GEARBOX)
FOR [6061CM] (SLAT BEVEL GEARBOX)
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
TASK 27-84-45-400-006-A	Installation of the Torque Shaft
FOR [6059CM] (SLAT BEVEL GEARBOX)
FOR [6061CM] (SLAT BEVEL GEARBOX)
TASK 27-50-00-000-003-A	Removal of the Lock-Torque Shaft - Flaps and Slats (98D27504030001)
TASK 53-35-11-000-001-A	Removal of the Wing-to-Fuselage Fairings
TASK 53-35-11-400-001-A	Installation of the Wing-to-Fuselage Fairings
TASK 53-35-13-000-002-A	Removal of the Quick-Release Access Panels from the Belly Fairing Structure
TASK 53-35-13-400-002-A	Installation of the Quick-Release Access Panels on the Belly Fairing Structure

3. Job Set-up
Subtask 27-84-43-860-052-A

A. Aircraft Maintenance Configuration
(1) Make sure that the slats are in the 0 degree position (Ref. AMM TASK 27-80-00-866-005).
(2) Make sure that the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION is installed (Ref. AMM TASK 27-00-00-480-002) on the slat/flap control lever.
(3) Make sure that the Green and Blue hydraulic systems are depressurized and put them in the maintenance configuration (Ref. AMM TASK 29-00-00-864-001).
(4) Make sure that the WARNING NOTICE(S) are in position to tell persons not to pressurize the hydraulic systems.
(5) Make sure that the 98D27504030001 LOCK-TORQUE SHAFT (FLAPS AND SLATS) WITH CLAMP-PIVOT is installed to lock the left slat transmission-system (Ref. AMM TASK 27-50-00-400-003).
(6) Make sure that the 98D27504030001 LOCK-TORQUE SHAFT (FLAPS AND SLATS) WITH CLAMP-PIVOT is installed to lock the right slat transmission-system (Ref. AMM TASK 27-50-00-400-003).
(7) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position below the applicable access panels.
(8) Make sure that the applicable access panels are removed:
(a) FOR [6009CM] (SLAT BEVEL GEARBOX), [6011CM] (SLAT BEVEL GEARBOX)
Access panels 191BT and 191CT (Ref. AMM TASK 53-35-11-000-001) and 191BB (Ref. AMM TASK 53-35-13-000-002)
(b) FOR [6059CM] (SLAT BEVEL GEARBOX), [6061CM] (SLAT BEVEL GEARBOX)
Access panels 192BT and 192CT (Ref. AMM TASK 53-35-11-000-001) and 192FB (Ref. AMM TASK 53-35-13-000-002).

Subtask 27-84-43-865-051-A

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

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B06
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B01
** ON A/C ALL
121VU	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21

4. Procedure

NOTE: The gearbox is a unit filled with grease and is not a hermetically sealed unit. It is normal for this grease to have some oil separation. The external surface of the gearbox may be moist with this separated oil as it is not a sealed unit. However, any separated oil in the unit that touches the grease will be changed back during operation. The oil separation will decrease during in-service operation until the lubricant is in a condition that is stable. This is normal and will not cause damage to the unit.

Subtask 27-84-43-910-051-A

A. Preparation for the Installation
(1) To install the same bevel gearbox(es) (4) and/or (8), clean the splined surfaces of the connections with the Non Aqueous Cleaner-- Petroleum Based - (Material No.08BBB1) .
(2) Apply the Polysulfide Sealant-Low Adhesion Fillet Structure (Material No.06AEB2) on the faces of the bevel gearboxes (4) and/or (8) which touch the support bracket(s) (5) and/or (9).

Subtask 27-84-43-420-051-A

B. Installation of the 63.5 Degree Bevel-Gearbox
(1) Clean the component interfaces and the adjacent area.
(2) Do an inspection of the component interfaces and the adjacent area.
(3) Prepare the surface of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-803).
(4) FOR [6009CM] (SLAT BEVEL GEARBOX), [6059CM] (SLAT BEVEL GEARBOX)
(a) Put the bevel gearbox (4) in position on the support bracket (5).
(b) Install the washers (6) and the bolts (7).
(c) TORQUE the bolts (7) to between 9.6 and 7.8 m.N (84.96 and 69.03 lbf.in )

.
(d) Do the electrical resistance measurement and the final protection of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-802).
(e) Apply the Corrosion Preventive Compound-Heavy Duty Hard Film - (Material No.12ACB1) on the heads of the bolts (7).
(f) Install torque shaft 6008CM (6058CM) (3) (Ref. AMM TASK 27-84-45-400-004).
(5) FOR [6011CM] (SLAT BEVEL GEARBOX), [6061CM] (SLAT BEVEL GEARBOX)
(a) Put the bevel gearbox (8) in position on the support bracket (9).
(b) Install the washers (11) and the bolts (10).
(c) TORQUE the bolts (10) to between 9.6 and 7.8 m.N (84.96 and 69.03 lbf.in )

Subtask 27-84-43-860-051-A

C. Preparation for the Test
(1) Remove the 98D27504030001 LOCK-TORQUE SHAFT (FLAPS AND SLATS) WITH CLAMP-PIVOT:
(a) FOR [6059CM] (SLAT BEVEL GEARBOX), [6061CM] (SLAT BEVEL GEARBOX)
From the right slat transmission-system (Ref. AMM TASK 27-50-00-000-003)
(b) FOR [6009CM] (SLAT BEVEL GEARBOX), [6011CM] (SLAT BEVEL GEARBOX)
From the left slat transmission-system (Ref. AMM TASK 27-50-00-000-003).
(2) Remove the 98D27803000000 LOCKING TOOL-FLAP SLAT LEVER,INT. POSITION (Ref. AMM TASK 27-00-00-080-002) from the slat/flap control lever.
(3) Remove the WARNING NOTICE(S).

Subtask 27-84-43-865-052-A

D. 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	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B06
** ON A/C NOT FOR ALL
49VU	FLIGHT CONTROLS/SLT/CTL AND MONG/SYS1	5CV	B01
** ON A/C ALL
121VU	FLIGHT CONTROLS/SLT/CTL/SYS2	7CV	R21

Subtask 27-84-43-710-050-A

E. Do the operational test of the slat system (Ref. AMM TASK 27-84-00-710-001).

5. Close-up
Subtask 27-84-43-410-050-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Install the applicable access panels:
(a) FOR [6009CM] (SLAT BEVEL GEARBOX), [6011CM] (SLAT BEVEL GEARBOX)
Install access panels 191BT and 191CT (Ref. AMM TASK 53-35-11-400-001) and 191BB (Ref. AMM TASK 53-35-13-400-002).
(b) FOR [6059CM] (SLAT BEVEL GEARBOX), [6061CM] (SLAT BEVEL GEARBOX)
Install access panels 192BT and 192CT (Ref. AMM TASK 53-35-11-400-001) and 192FB (Ref. AMM TASK 53-35-13-400-002).
(3) Remove the access platform(s).

[Rev.10 from 2021] 2026.03.31 23:56:47 UTC