Inspection / Check of the Pilot Fuel Nozzles and Manifold (APS 3200)

TASK 49-31-41-200-003-A
Inspection / Check of the Pilot Fuel Nozzles and Manifold (APS 3200)

WARNING: DO NOT TOUCH THE APU UNTIL IT IS SUFFICIENTLY COOL TO PREVENT BURNS WHEN YOU DO THE MAINTENANCE TASK(S).

1. Reason for the Job
Self explanatory
2. Job Set-up Information
A. Referenced Information

REFERENCE	DESIGNATION
TASK 49-31-41-000-002-A	Removal of the Pilot Fuel Nozzles and Manifold (APS 3200)
TASK 49-31-41-400-002-A	Installation of the Pilot Fuel Nozzles and Manifold (APS 3200)

3. Job Set-up
Subtask 49-31-41-020-056-A ** ON A/C NOT FOR ALL

A. Remove the Manifold and Fuel Nozzles (Ref. AMM TASK 49-31-41-000-002).

4. Procedure
Subtask 49-31-41-020-053-A ** ON A/C NOT FOR ALL

A. Inspection of the Fuel Nozzles and Manifold.
(1) Inspect the manifold fuel tube insulation for splitting, hardening and porosity. None is permitted.
(2) Make sure that the nozzle fuel-inlet connections (3) are not damaged, or blocked with carbon material.
(3) Examine the nozzle mounting bosses (6) and make sure that they are clean and not damaged.
(4) Examine the atomizer assembly for damage or carbon material. None is permitted.
(5) Blow filtered air through each nozzle connection. Make sure that there are no blockages.

NOTE: If a blockage is found replace the nozzle assembly.

5. Close-up
Subtask 49-31-41-420-055-A ** ON A/C NOT FOR ALL

A. Install the Fuel Nozzles and Manifold (Ref. AMM TASK 49-31-41-400-002).

[Rev.10 from 2021] 2026.04.01 01:29:32 UTC