Visual Inspection of the Fuel Strainer Differential Pressure Sensor (Transducer) (FSDP) [CFML]

TASK 73-34-10-210-801-A
Visual Inspection of the Fuel Strainer Differential Pressure Sensor (Transducer) (FSDP)

WARNING: BE CAREFUL WHEN YOU DO WORK ON THE ENGINE PARTS AFTER THE ENGINE SHUTDOWN. USE APPLICABLE THERMAL GLOVES. THE ENGINE PARTS CAN STAY HOT FOR ONE HOUR AFTER SHUTDOWN AND CAN BURN YOU.

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 1M(3 FT)
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL, 438AR
FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL, 448AR

C. Referenced Information

REFERENCE	DESIGNATION
TASK 70-70-00-910-804-A	Electrical Standard Practices
TASK 71-00-00-700-805-A	Dry-Motoring Check
TASK 71-13-00-010-803-A	Opening of the Fan Cowl Doors
TASK 71-13-00-410-803-A	Closing of the Fan Cowl Doors
TASK 73-34-10-000-801-A	Removal of the Fuel Strainer Differential Pressure Sensor
TASK 73-34-10-400-801-A	Installation of the Fuel Strainer Differential Pressure Sensor

3. Job Set-up
Subtask 73-34-10-941-052-A

A. Safety Precautions
(1) On the center pedestal, on ENG panel 115VU:
(a) Make sure that the ENG/MODE selector switch is in the NORM position.
(b) Make sure that the ENG/MASTER 1(2) control switch was in the OFF position not less than five minutes before you do this procedure.
(c) Put WARNING NOTICE(S) in position to tell persons not to operate:

The ENG/MODE selector switch, and
The ENG/MASTER 1(2) control switch.

(2) On the ENG section of maintenance panel 50VU:
(a) Make sure that the ON legend of the FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) in position to tell persons not to energize FADEC 1(2).

Subtask 73-34-10-010-054-A

B. Get Access
(1) Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(2) Put an ACCESS PLATFORM 1M(3 FT) in position.

4. Procedure
Subtask 73-34-10-210-050-A

A. Visual Inspection of the Fuel Strainer Differential Pressure Sensor (Transducer) (FSDP)
(1) Examine the FSDP as follows:

INSPECT/CHECK	MAXIMUM SERVICEABLE LIMITS	REMARKS
1.Examine the FSDP for:
(a) Signs of fuel leaks	Not permitted	Replace the FSDP O-ring (Ref. AMM TASK 73-34-10-000-801) and (Ref. AMM TASK 73-34-10-400-801).
(b) Looseness	Not permitted	Tighten the bolts that attach the FSDP to the fuel filter (Ref. AMM TASK 73-34-10-400-801).
(c) Loose electrical connectors	Not permitted	Tighten the electrical connector on the FSDP (Ref. AMM TASK 70-70-00-910-804).

Subtask 73-34-10-710-050-A

B. Test
(1) Do a dry-motoring check (Ref. AMM TASK 71-00-00-700-805).
(2) Repair the leaks that you find.
(3) Examine the location for leaks again.

5. Close-up
Subtask 73-34-10-410-052-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close the fan cowl doors (Ref. AMM TASK 71-13-00-410-803):
(a) FOR [4020KM1] (POWER PLANT-DEMOUNTABLE, ENGINE 1)
437AL 438AR
(b) FOR [4020KM2] (POWER PLANT-DEMOUNTABLE, ENGINE 2)
447AL 448AR
(3) Remove the access platform(s).
(4) Remove the WARNING NOTICE(S).

[Rev.10 from 2021] 2026.04.01 03:06:44 UTC