Removal of the Fuel Filter Element [CFMB]

TASK 73-11-10-000-004-A
Removal of the Fuel Filter Element

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	CONTAINER 5 L (1.32 USGAL)
No specific	AR	WARNING NOTICE(S)

B. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
FOR [1000EM1] (ENGINE-1)
437AL, 438AR
FOR [1000EM2] (ENGINE-2)
447AL, 448AR

C. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
300	D-HEAD BOLT	AIPC 73-11-10-01-230
310	RETAINING RING	AIPC 73-11-10-01-240

D. Referenced Information

REFERENCE	DESIGNATION
TASK 71-13-00-010-040-B	Opening of the Fan Cowl Doors
TASK 73-11-10-210-003-A	Visual Inspection of the Fuel Filter Cartridge
TASK 73-11-10-300-002-A	Removal of Defective Inserts on the Main Fuel Filter Housing
Fuel Filter Element
Configuration 2, 3 and 4 Attachment Installation

3. Job Set-up
Subtask 73-11-10-941-059-A ** ON A/C NOT FOR ALL

A. Safety Precautions
(1) On the center pedestal, on the ENG panel 115VU:
(a) Put a WARNING NOTICE(S) to tell persons not to start the engine.
(2) Make sure that the engine 1(2) shutdown occurred not less than 5 minutes before you do this procedure.
(3) On the overhead maintenance panel 50VU:
(a) Make sure that the ON legend of the ENG/FADEC GND PWR/1(2) pushbutton switch is off.
(b) Put a WARNING NOTICE(S) to tell persons not to energize the FADEC 1(2).

Subtask 73-11-10-865-051-A ** ON A/C NOT FOR ALL

B. Make sure that this(these) circuit breaker(s) is(are) closed:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
FOR FIN: 1000EM1 (ENGINE1)
49VU	ENGINE/1/HP FUEL SOV	1KC1	A01
FOR FIN: 1000EM2 (ENGINE2)
49VU	ENGINE/2/HP FUEL SOV	1KC2	A02

Subtask 73-11-10-010-066-A ** ON A/C NOT FOR ALL

C. Open the fan cowl doors (Ref. AMM TASK 71-13-00-010-040):
(1) FOR [1000EM1] (ENGINE-1)
437AL 438AR
(2) FOR [1000EM2] (ENGINE-2)
447AL 448AR

4. Procedure

CAUTION: BE CAREFUL WHEN YOU DO WORK ON THE FUEL FILTER COVER. THERE ARE SEVERAL TYPES OF ATTACHMENT.

Subtask 73-11-10-020-057-A ** ON A/C NOT FOR ALL

A. Not applicable
PRE CFM SB 73-A0062
PRE CFM SB 73-0055

Subtask 73-11-10-020-069-A ** ON A/C NOT FOR ALL

B. Removal of the Fuel Filter Element
POST CFM SB 73-0055

NOTE: This subtask is for engines that have a fuel filter cover attachment with six bolts, six washers, six self-aligning nuts and six self-aligning washers.

(1) Remove the fuel filter element (20) as follows:

Fuel Filter Element ** ON A/C NOT FOR ALL

CAUTION: BE CAREFUL WHEN YOU REPLACE THE HARDWARE THAT ATTACHES THE FUEL FILTER COVER. THERE ARE TWO HARDWARE SUPPLIERS. MAKE SURE THAT YOU DO NOT INTERMIX THE HARDWARE.

(a) Put a CONTAINER 5 L (1.32 USGAL) under the engine to drain the residual fuel.
(b) Cut and remove safety wire from drain plug (70).
(c) Remove drain plug (70) and let the fuel drain.
(d) Remove and discard O-ring (80) from the drain plug (70).
(e) Remove the bolts (100), washers (110), self-aligning nuts (120) and washers (130).
1 Inspect bolts (100) for signs of damage such as thread damaged, nicks or dents on threads, etc.
If there is damage, discard and replace them.
2 Inspect self-aligning nuts (120) for signs of damage such as thread damaged, spherical face damaged, etc.
If there is damage, discard and replace them.
3 Inspect self-aligning washers (130) for signs of damage such as spherical face damaged, etc.
If there is damage, discard and replace them.
4 Inspect washers (110) for signs of damage (nicks, fastness condition, etc.).
If there is damage, discard and replace them.
(f) Remove the fuel filter cover (40) from the main fuel pump housing.

NOTE: When you remove the fuel filter cover, the fuel filter element remains attached to it.

(g) Remove and discard the O-ring (90) from the fuel filter cover (40).
(h) Do an inspection of the fuel filter cover for contamination (Ref. AMM TASK 73-11-10-210-003).
(i) Do an inspection of the fuel filter element for contamination. According to the fuel filter element contaminants, you must do an inspection of the fuel filter element (Ref. AMM TASK 73-11-10-210-003).

PRE CFM SB 73-0107

1 Remove and discard the fuel filter element (20) as follows:
a Remove the fuel filter element (20) from the fuel filter cover (40) with the O-rings (10) and (30).
b Make sure that O-rings (10) and (30) are in the fuel filter element.
c Discard the fuel filter element (20).

END OF PRE CFM SB 73-0107
POST CFM SB 73-0107

2 Remove and discard the fuel filter element (20) as follows:
a Remove and discard the fuel filter element (20) from the fuel filter cover (40).
b Make sure that O-rings are in the fuel filter element.
c Discard the fuel filter element (20).

END OF POST CFM SB 73-0107

3 If you remove the main fuel pump for investigation purposes, install the fuel filter element again in its housing.

END OF POST CFM SB 73-0055

Subtask 73-11-10-020-070-A ** ON A/C NOT FOR ALL

C. Removal of the fuel filter element
POST CFM SB 73-A0062
PRE CFM SB 73-0111

NOTE: This subtask is for engines that have a fuel filter cover attachment with five D-HEAD bolts, five retaining rings, five washers, five nuts and one bolt, one washer with fuel pump housing insert (1 location).

(1) Remove the fuel filter element (20) as follows:

Fuel Filter Element ** ON A/C NOT FOR ALL

(a) Put a CONTAINER 5 L (1.32 USGAL) under the fuel filter housing, to drain the remaining fuel.
(b) Cut and remove the safety wire from the drain plug (70).
(c) Remove the drain plug (70) and let the fuel drain.
(d) Remove and discard the O-ring (80) from the drain plug (70).
(e) Remove the bolt (350) and the washer (340) from the fuel filter cover (40).
1 Inspect bolt (350) for signs of damage such as thread damaged, nicks or dents on threads, etc.
If there is damage, discard and replace it.
2 Inspect washer (340) for signs of damage (nicks, fastness condition, etc.).
If there is damage, discard and replace it.
3 Inspect the main fuel pump housing insert for signs of damage such as insert pulled out, insert movement, thread insert damaged.
If there is insert damage, replace the main fuel pump or do the approved repair (Ref. AMM TASK 73-11-10-300-002) or CFM SB 73-0111.

NOTE: Only one insert is found, in the hole adjacent to the nameplate, in the main fuel pump housing.

(f) Remove the nuts (320) and the flat washers (330) from the fuel filter cover (40).
1 Inspect the nuts (320) for signs of damage such as thread damaged, etc.
If there is damage, discard and replace them.
2 Inspect the flat washers (330) for signs of damage (nicks, fastness condition, etc.).
If there is damage, discard and replace them.
(g) Remove the fuel filter cover (40) from the main fuel pump housing.

NOTE: When you remove the fuel filter cover, the fuel filter element remains attached to it.

(h) Remove and discard the O-ring (90) from the fuel filter cover (40).
(i) Do an inspection of the attaching parts as follows:
1 Inspect AIPC 73-11-10-01-230 D-HEAD BOLT (300) threads for signs of damage such as thread damaged, nicks or dents on threads, etc.
If there is damage, discard and replace them as follows:
- Remove and discard the AIPC 73-11-10-01-240 RETAINING RING (310).
- Remove and discard the AIPC 73-11-10-01-230 D-HEAD BOLT (300).
- Install a new AIPC 73-11-10-01-230 D-HEAD BOLT (300) on the main fuel pump housing.
- Install a new AIPC 73-11-10-01-240 RETAINING RING (310) on the D-Head bolt.
(j) Do an inspection of the fuel filter cover for contamination (Ref. AMM TASK 73-11-10-210-003).
(k) Do an inspection of the fuel filter element for contamination. According to the fuel filter element contaminants, you must do an inspection of the filter element (Ref. AMM TASK 73-11-10-210-003).

PRE CFM SB 73-0107

1 Remove and discard the fuel filter element (20).
a Remove the fuel filter element (20) from the fuel filter cover (40) with the O-rings (10) and (30).
b Make sure that O-rings (10) and (30) are in the fuel filter element.
c Discard the fuel filter element (20).

END OF PRE CFM SB 73-0107

POST CFM SB 73-0107

2 Remove and discard the fuel filter element (20):
a Remove and discard the fuel filter element (20) from the fuel filter cover (40).
b Make sure that O-rings are in the fuel filter element.
c Discard the fuel filter element (20).

END OF POST CFM SB 73-0107

3 If you remove the main fuel pump for investigation purposes, install the fuel filter element again in its housing.

END OF POST CFM SB 73-A0062

END OF PRE CFM SB 73-0111

Subtask 73-11-10-020-071-A ** ON A/C NOT FOR ALL

D. Removal of the Fuel Filter Element
POST CFM SB 73-0111

NOTE: This subtask is for engines that have a fuel filter cover attachment with five D-HEAD bolts, five retaining rings, five washers, five nuts and one bolt with one washer, one self-aligning washer and one self-aligning nut.

(1) Remove the fuel filter element (20) as follows:

Fuel Filter Element ** ON A/C NOT FOR ALL

(a) Put a CONTAINER 5 L (1.32 USGAL) under the fuel filter housing to drain the remaining fuel.
(b) Cut and remove safety wire from drain plug (70).
(c) Remove drain plug (70) and let the fuel drain.
(d) Remove and discard O-ring (80) from the drain plug (70).
(e) Remove the self-aligning nut (120), the self-aligning washer (130), the bolt (100) and the washer (110) from the fuel filter cover (40).
1 Inspect bolt (100) for signs of damage such as threads damaged, nicks or dents on threads, etc.
If there is damage, discard and replace it.
2 Inspect self-aligning nut (120) for signs of damage such as thread damaged, spherical face damaged, etc.
If there is damage, discard and replace it.
3 Inspect self-aligning washer (130) for signs of damage such as spherical face damaged, etc.
If there is damage, discard and replace it.
4 Inspect washer (110) for signs of damage (nicks, fastness condition, etc.).
If there is damage, discard and replace it.
(f) Remove the nuts (320) and the flat washers (330) from the filter cover (40).
1 Inspect the nuts (320) for signs of damage such as thread damaged, etc.
If there is damage, discard and replace them.
2 Inspect the flat washers (330) for signs of damage (nicks, fastness condition, etc.).
If there is damage, discard and replace them.
(g) Remove the fuel filter cover (40) from the main fuel pump housing.

NOTE: When you remove the fuel filter cover, the fuel filter element remains attached to it.

(h) Remove and discard the O-ring (90) from the fuel filter cover (40).
(i) Do an inspection of the attaching parts as follows:
1 Inspect AIPC 73-11-10-01-230 D-HEAD BOLT (300) threads for signs of damage such as thread damaged, nicks or dents on threads, etc.
If there is damage, discard and replace the D-Heat bolt as follows:
- Remove and discard the AIPC 73-11-10-01-240 RETAINING RING (310).
- Remove and discard the AIPC 73-11-10-01-230 D-HEAD BOLT (300).
- Install a new AIPC 73-11-10-01-230 D-HEAD BOLT (300) on the main fuel pump housing.
- Install a new AIPC 73-11-10-01-240 RETAINING RING (310) on the D-Head bolt.
(j) Do an inspection of the fuel filter cover for contamination (Ref. AMM TASK 73-11-10-210-003).
(k) Do an inspection of the fuel filter element for contamination. According to the fuel filter element contaminants, you must do an inspection of the filter element (Ref. AMM TASK 73-11-10-210-003).

PRE CFM SB 73-0107

1 Remove and discard the fuel filter element as follows:
a Remove and discard the fuel filter element (20) with the O-rings (10) and (30).
b Make sure that O-rings (10) and (30) are in the fuel filter element.
c Discard the fuel filter element (20).

END OF PRE CFM SB 73-0107
POST CFM SB 73-0107

2 Remove and discard the fuel filter element as follow:
a Remove and discard the fuel filter element (20).
b Make sure that O-rings are in the fuel filter element.
c Discard the fuel filter element (20).

END OF POST CFM SB 73-0107

3 If you remove the main fuel pump for investigation purposes, install the fuel filter element again.

END OF POST CFM SB 73-0111

[Rev.10 from 2021] 2026.04.01 02:57:29 UTC