Removal of the Cadensicon

TASK 28-42-16-000-002-A
Removal of the Cadensicon

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.

FIN: 20QT ** ON A/C NOT FOR ALL

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)- ADJUSTABLE
No specific	AR	CAP - BLANKING
No specific	AR	SAFETY BARRIER(S)
No specific	AR	SAFETY CLIP - CIRCUIT BREAKER
No specific	AR	WARNING NOTICE(S)

B. Referenced Information

REFERENCE	DESIGNATION
TASK 28-10-00-910-001-A	Safety Procedures When You Do Work in a Fuel Tank
TASK 28-10-00-910-002-A	Access to the Fuel Tanks and the Work Areas
TASK 28-25-00-650-001-A	Pressure Defuel
TASK 28-25-00-650-003-A	To Drain Remaining Fuel from the Wing Tanks and the Center Tank
TASK 28-25-00-650-003-A-01	To Drain Remaining Fuel from the Wing Tanks and the Center Tank
TASK 32-12-00-010-001-A	Open the Main Gear Doors for Access
TASK 57-17-11-000-001-A	Removal of Access Cover 147AZ(148AZ)
Cadensicon 20QT
Cadensicon Transport Pin

3. Job Set-up
Subtask 28-42-16-941-055-A ** ON A/C NOT FOR ALL

A. Safety Precautions

WARNING: BEFORE YOU DO WORK IN OR NEAR A FUEL TANK, MAKE SURE THAT YOU OBEY ALL THE SAFETY PROCEDURES. THIS WILL PREVENT INJURY TO PERSONS AND/OR DAMAGE TO THE AIRCRAFT.

(1) You must obey the fuel safety procedures (Ref. AMM TASK 28-10-00-910-001) when you do work in a fuel tank.
(2) As necessary, use the applicable SAFETY BARRIERS, specified by the operator's instructions and your local regulations.
(3) Put a WARNING NOTICE(S) in position to tell persons not to operate the MLG doors.

Subtask 28-42-16-650-053-A ** ON A/C NOT FOR ALL

B. Fuel Configuration
(1) Defuel the center tank (Ref. AMM TASK 28-25-00-650-001).
(2) Drain the remaining fuel from the center tank (Ref. AMM TASK 28-25-00-650-003).

Subtask 28-42-16-010-051-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Open the applicable MLG door (Ref. AMM TASK 32-12-00-010-001).
(2) Make sure that the 460005835 SLEEVE - GROUND LOCK is installed on the applicable MLG door actuator.
(3) Put the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE in position below the applicable access panel 147AZ (148AZ).
(4) Remove the applicable center-tank access panel 147AZ (148AZ) (Ref. AMM TASK 28-10-00-910-002), (Ref. AMM TASK 57-17-11-000-001).

Subtask 28-42-16-865-053-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	FUEL/FQI/CHAN/1	1QT	A13
121VU	FUEL/FQI/CHANNEL/1 AND 2	8QT	L26
121VU	FUEL/RFL/DFL/SPLY	2QU	L24
121VU	FUEL/RFL/DFL/XFR/DEFUEL/VALVE	1QU	L23
121VU	FUEL/FQI/CHAN/2	2QT	M27

4. Procedure
Subtask 28-42-16-020-051-A ** ON A/C NOT FOR ALL

A. Removal of the Cadensicon 20QT

CAUTION: MAKE MATCH MARKS ON ALL THE ELECTRICAL WIRES BEFORE YOU DISCONNECT THEM. INCORRECT CONNECTION OF WIRES WILL CAUSE DAMAGE TO EQUIPMENT.

CAUTION: DO NOT PULL THE WIRE WHEN YOU DISCONNECT AN ELECTRICAL CABLE. YOU MUST ONLY PULL THE PLASTIC HOUSING TO REMOVE THE CONNECTION. THIS WILL PREVENT DAMAGE TO THE ELECTRICAL CABLES.

(1) Disconnect the electrical connectors (5) from the cadensicon (1) and put CAP - BLANKING on the electrical connectors (5).
(2) Remove the bolts (2), the washers (3) and the cadensicon (1) from the support bracket (4).
(3) Installation of the transport pin:

NOTE: Cadensicon part numbers 796-809-5 and 796-809-6 do not have the transport pins installed.

(a) You must install a transport pin if you want to repair cadensicon part number 796-809-6A.
(b) Tilt the cadensicon (1) until the counterweight and the float go to the maximum top position.
(c) Install the transport pin (10) in the cadensicon (1).
(d) Lock the transport pin (10) with its movable clip.

[Rev.10 from 2021] 2026.04.02 06:18:07 UTC