Removal of the Clack Valve

TASK 28-11-42-000-002-A
Removal of the Clack Valve

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: 214QM ** ON A/C NOT FOR ALL
FIN: 215QM ** ON A/C NOT FOR ALL
FIN: 216QM ** ON A/C NOT FOR ALL
FIN: 217QM ** 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 4M (13 FT)
No specific	AR	SAFETY BARRIER(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
540RB, 550AB, 640RB, 650AB

C. 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 28-12-47-000-001-A	Removal of the NACA Vent Intake
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 57-27-11-000-002-A	Removal of the Access Panel
Clack Valve

3. Job Set-up
Subtask 28-11-42-941-052-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 when you do work in a fuel tank (Ref. AMM TASK 28-10-00-910-001).
(2) Put the SAFETY BARRIER(S) in position.

Subtask 28-11-42-650-053-A ** ON A/C NOT FOR ALL

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

Subtask 28-11-42-010-052-A ** ON A/C NOT FOR ALL

C. Get Access
(1) Put the ACCESS PLATFORM 4M (13 FT) in position below the applicable access panel 540RB(640RB).
(2) Remove the applicable access panel (Ref. AMM TASK 57-27-11-000-002) and (Ref. AMM TASK 28-10-00-910-002):
(a) For 214QM and 216QM, remove 540RB
(b) For 215QM and 217QM, remove 640RB.
(3) Remove the applicable NACA vent intake (Ref. AMM TASK 28-12-47-000-001) and (Ref. AMM TASK 28-10-00-910-002):
(a) For 214QM and 216QM, remove 550AB
(b) For 215QM and 217QM, remove 650AB.

4. Procedure
Subtask 28-11-42-020-051-A ** ON A/C NOT FOR ALL

A. Removal of the Clack Valve
(1) Remove the bolts (1).
(2) Remove the clack valve (2).

[Rev.10 from 2021] 2026.04.02 06:17:06 UTC