Installation of the Fuel Panel Access-Door

TASK 52-42-18-400-001-A
Installation of the Fuel Panel Access-Door

WARNING: BE CAREFUL WHEN YOU USE CONSUMABLE MATERIALS. OBEY THE MATERIAL MANUFACTURER'S INSTRUCTIONS AND YOUR LOCAL REGULATIONS.

ZONE: 190

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 3M (10 FT)- ADJUSTABLE
No specific	AR	DYNAMOMETER 20 DAN (45 LBF) - PULL

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.04QAB2)	Coating_- Flexible Structure
(Material No.05EML7)	Epoxy Adhesive-- - Legacy 3
(Material No.06AAA1)	Polysulfide Sealant_General Purpose Brushable -
(Material No.06AAB1)	Polysulfide Sealant-General Purpose Fillet -
(Material No.06ABC1)	Polysulfide Sealant-Fuel Tank Interfay -
(Material No.06AEB2)	Polysulfide Sealant-Low Adhesion Fillet Structure
(Material No.14CHB1)	Testing Medium-Gap Measuring Epoxy -
(Material No.14QDC1)	Wire-Locking Dia: 0.5 mm (0.020 inch) CRES -
(Material No.14QFB1)	Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
190	BELLY FAIR, AIR CONDITIONING & HYD COMPT
192MB

D. Expendable Parts

FIG.ITEM	DESIGNATION	IPC-CSN
6	NUTS	AIPC 52-42-03-05-390
42	RIVET	AIPC 52-42-03-05-563
40	POLYAMIDE SHIM	AIPC 52-42-03-05-565
14	COTTER PIN	AIPC 52-42-03-05-580
11	NUT	AIPC 52-42-18-01-100
6	NUTS	AIPC 52-42-83-05-030
14	COTTER PIN	AIPC 52-42-83-05-220

E. Referenced Information

REFERENCE	DESIGNATION
TASK 20-28-00-912-802-A	Electrical Bonding - General Maintenance Procedure
TASK 20-28-00-912-803-A	Bonding Surface Preparation
SRM 514211
Fuel Panel Access-Door ** ON A/C NOT FOR ALL
Fuel Panel Access-Door ** ON A/C NOT FOR ALL
Fuel Panel Access-Door ** ON A/C NOT FOR ALL
Adjustment of the Fuel Panel Access-Door (192MB) ** ON A/C NOT FOR ALL
Adjustment of the Fuel Panel Access-Door (192MB) ** ON A/C NOT FOR ALL
Adjustment of the Fuel Panel Access-Door (192MB) ** ON A/C NOT FOR ALL

3. Job Set-up
Subtask 52-42-18-869-050-A

A. Aircraft Maintenance Configuration
(1) Make sure that the ACCESS PLATFORM 3M (10 FT)- ADJUSTABLE is in position at zone 192.
(2) Make sure that door 192MB is open.

Subtask 52-42-18-865-051-A

B. Make sure that this(these) circuit breaker(s) is(are) open, safetied and tagged:

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	FUEL/RFL/DFL/SPLY	2QU	L24
** ON A/C NOT FOR ALL
121VU	FUEL/RFL/DFL/SPLY	2QU	L23
** ON A/C ALL
122VU	ELEC/RFL/SPLY/LOGIC	4PR	U29

4. Procedure
Subtask 52-42-18-420-051-C ** ON A/C NOT FOR ALL

A. Installation of the Fuel Panel Access-Door
(1) Put the fuel panel access-door (10) in position in its frame on the hinge side.
(2) Apply Epoxy Adhesive-- - Legacy 3 (Material No.05EML7) in the housing of the screws (18).
(3) Install the cupwashers (2), the washers (17), the screws (1) and (18) and the nuts (8).
(4) Do an electrical bonding when you install the screws (1), the cupwashers (2) and the nuts (8) (Ref. AMM TASK 20-28-00-912-802).
(5) Tighten the nuts (8).
(6) Install the screw (4), the washers (5) and (6), the spring (3), the washers (7) and (16) and the nut (15) on the support fitting (9).
(7) Tighten the nut (15).

Subtask 52-42-18-420-051-D ** ON A/C NOT FOR ALL

A. Installation of the Fuel Panel Access-Door
(1) Assemble the fuel panel access-door (4):

WARNING: USE PROTECTIVE GOGGLES WHEN YOU REMOVE OR INSTALL A COTTER PIN. EACH TIME YOU REMOVE A COTTER PIN DURING THE TASK, DISCARD IT IMMEDIATELY. A LOOSE COTTER PIN CAN CUT YOU OR MAKE YOU BLIND.

(a) Put the spring (12) in position and install the axis (15) together with the pin (16), the washers (13) and the new AIPC 52-42-03-05-580 COTTER PIN (14) or the new AIPC 52-42-83-05-220 COTTER PIN (14).
(b) Install the stop contactor (20) together with the locknut (19), the washers (18) and the nut (17) on the support fitting (5).
(2) Hold the fuel panel access-door (4) and install the screws (8), the washers (7) and the new AIPC 52-42-03-05-390 NUTS (6) or the new AIPC 52-42-83-05-030 NUTS (6).
(3) Tighten the nuts (6).
(4) Put the spring (12) in position and install the screw (3), the spacer (2) and the nut (1).
(5) Connect the bonding lead (10) as follows:
(a) Prepare the surface of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-803).
(b) Connect the bonding lead (10) and install the screw (21), the washer (9) and the new AIPC 52-42-18-01-100 NUT (11).
(c) Tighten the nut (11).
(d) Do the electrical resistance measurement and the final protection of the bonding point(s)
(Ref. AMM TASK 20-28-00-912-802).

Subtask 52-42-18-820-050-C ** ON A/C NOT FOR ALL

WARNING: USE PROTECTIVE GOGGLES AND GLOVES WHEN YOU REMOVE OR INSTALL LOCKWIRE. EACH TIME YOU CUT LOCKWIRE, REMOVE AND DISCARD IT IMMEDIATELY. LOOSE LOCKWIRE CAN CUT YOU OR MAKE YOU BLIND, AND/OR CAN CAUSE DAMAGE.

B. Adjustment of the Proximity Switch

Adjustment of the Fuel Panel Access-Door (192MB) ** ON A/C NOT FOR ALL

(1) Open the fuel panel access-door (10).
(2) Cut and discard the lockwire from the nut (11) and the locknut (13).
(3) Loosen the nut (11) and the locknut (13) from the stop screw (14).
(4) Adjust the stop screw (14) until it touches the proximity switch (19) and before the fuel panel access-door (10) closes.
(5) Make sure that when the fuel panel access-door (10) is fully closed, the light is off.
(6) Retract the stop screw (14) by 2.5 +0.2 mm or -0.2 mm (0.0984 +0.0079 in. or -0.0079 in.).
(7) Tighten the nut (11) and the locknut (13) on the support fitting (12).
(8) Safety the nut (11) and the locknut (13) with the 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.

Subtask 52-42-18-820-050-D ** ON A/C NOT FOR ALL

B. Adjustment of the Proximity Switch

Adjustment of the Fuel Panel Access-Door (192MB) ** ON A/C NOT FOR ALL

(1) Open the fuel panel access-door (4).
(2) Cut and discard the lockwire from the nut (17) and the locknut (19).
(3) Loosen the nut (17) and the locknut (19) from the stop contactor (20).
(4) Adjust the stop contactor (20) until it touches the proximity switch (25) and before the fuel panel access-door (4) closes.
(5) Make sure that when the fuel panel access-door (4) is fully closed, the light is off.
(6) Retract the stop contactor (20) by 2.5 +0.2 mm or -0.2 mm (0.0984 +0.0079 in. or -0.0079 in.).
(7) Tighten the nut (17) and the locknut (19) on the support fitting (5).
(8) Safety the nut (17) and the locknut (19) with the 14QFB1Wire-Locking Dia: 0.8 mm CRES Nickel Alloy -.

Subtask 52-42-18-820-050-E ** ON A/C NOT FOR ALL

B. Adjustment of the Proximity Switch

Adjustment of the Fuel Panel Access-Door (192MB) ** ON A/C NOT FOR ALL

(1) Open the fuel panel access-door (4).
(2) Cut and discard the lockwire from the nut (17) and the locknut (19).
(3) Loosen the nut (17) and the locknut (19) from the stop contactor (20).
(4) Adjust the stop contactor (20) until it touches the proximity switch (25).
(5) Loosen the stop contactor (20) until the light goes off.
(6) Retract the stop contactor (20) by 2.5 +0.2 mm or -0.2 mm (0.0984 +0.0079 in. or -0.0079 in.).
(7) Tighten the nut (17) and the locknut (19) on the support fitting (5).
(8) Safety the nut (17) and the locknut (19) with the 14QDC1Wire-Locking Dia: 0.5 mm (0.020 inch) CRES -.

Subtask 52-42-18-220-050-B ** ON A/C NOT FOR ALL

C. Check of the Peripheral Clearance

Adjustment of the Fuel Panel Access-Door (192MB) ** ON A/C NOT FOR ALL

(1) Close the fuel panel access-door (14).
(2) Do a check of the peripheral clearance between the fuel panel access-door (14) and the fuel panel access-door frame.
(3) Make sure that clearance Y is 1.5 -0.5 mm or +0.5 mm (0.0591 -0.0197 in. or +0.0197 in.).
(4) If clearance Y is not in the tolerance do the adjustment that follows:
(a) Open the fuel panel access-door (14).
(b) Loosen the nuts (7) from the fuel panel access-door (14).
(c) Move the fuel panel access-door (14) until the clearance Y is in the limit.
(d) Tighten the nuts (7).

Subtask 52-42-18-220-050-C ** ON A/C NOT FOR ALL

C. Check and Adjustment of the Fuel Panel Access-Door

Adjustment of the Fuel Panel Access-Door (192MB) ** ON A/C NOT FOR ALL

(1) Apply Testing Medium-Gap Measuring Epoxy - (Material No.14CHB1) on the recess of the hooks (21).
(2) Close the fuel panel access-door (4).
(3) Make sure that:
(a) Clearance J2 is 1.5 +1.5 mm or -0.5 mm (0.0591 +0.0591 in. or -0.0197 in.).
(b) Clearance J4 is 1.5 +1.5 mm or -0.5 mm (0.0591 +0.0591 in. or -0.0197 in.).
(c) Out-of-flush clearance J3 is 0 +0.7 mm or -0.7 mm (0.0000 +0.0276 in. or -0.0276 in.).
(d) Out-of-flush clearance J5 is 0 +1 mm or -1 mm (0.0000 +0.0394 in. or -0.0394 in.).
(e) The fuel panel access-door (4) is correctly installed in its frame.
(4) Open the fuel panel access-door (4).
(5) Make sure that clearance J1 between the spacers (26) and the hooks (21) is 0.5 +0.5 mm or -0.5 mm (0.0197 +0.0197 in. or -0.0197 in.).
(6) Do the adjustment that follows if:

Clearances J2 and J4 and out-of-flush clearances J3 and J5 are not in the tolerances.
The fuel panel access-door (4) is not correctly installed in its frame:

(a) Remove the bolts (22) and the nuts (23).
(b) Correct the position of the hooks (21).
(c) If necessary, drill new holes in the support fitting SRM 514211.
(d) Install the bolts (22) and the nuts (23).
(e) Tighten the nuts (23).
(f) Remove the paste from the recess of the hooks (21).
(7) Make sure that the spacers (26) move freely when the fuel panel access-door (4) is open.
(8) Measure the opening and closing loads of the fuel panel access-door (4) with the DYNAMOMETER 20 DAN (45 LBF) - PULL.
(9) Make sure that:
(a) The closing load at the center of the fuel panel access-door (4) is between 9 daN (20.2328 lbf) and 12 daN (26.9771 lbf).
(b) The opening load at the forward extremity of the fuel panel access-door (4) is less than 10 daN (22.4809 lbf).
(c) The opening angle of the fuel panel access-door (4) is more than 90 degrees.

Subtask 52-42-18-220-050-E ** ON A/C NOT FOR ALL

C. Check and Adjustment of the Fuel Panel Access-Door

Adjustment of the Fuel Panel Access-Door (192MB) ** ON A/C NOT FOR ALL

(1) Close the fuel panel access-door (4).
(2) Make sure that:
(a) Clearance J2 is 3 +1 mm or -0 mm (0.1181 +0.0394 in. or +0.0000 in.) for the forward side.
(b) Clearance J2 is 2 +1 mm or -1 mm (0.0787 +0.0394 in. or -0.0394 in.) for the aft side.
(c) Clearance J4 is 2 +1 mm or -1 mm (0.0787 +0.0394 in. or -0.0394 in.).
(d) Out-of-flush clearance J3 is 0.5 +0.5 mm or -0.5 mm (0.0197 +0.0197 in. or -0.0197 in.) for the aft side.
(e) Out-of-flush clearance J3 is -0.5 +0.5 mm or -0.5 mm (-0.0197 +0.0197 in. or -0.0197 in.) for the forward side.
(f) Out-of-flush clearance J5 is 0 +1 mm or -1 mm (0.0000 +0.0394 in. or -0.0394 in.).
(g) The fuel panel access-door (4) is correctly installed in its frame.
(3) If clearances J2 and J4 are not correct, adjust the counter-fittings:
(a) Remove the nuts (34), the washer (38), the bonding strap (10), the bolts (35), (36) and (37) and the counter-fittings (31), (32) and (33).
(b) Put the fuel panel access-door (4) and the counter-fittings (31), (32) and (33) in the correct position.
(c) Drill new holes from the fuel panel to the counter-fittings (31), (32) and (33) SRM 514211.
(d) Apply a layer of Polysulfide Sealant-Low Adhesion Fillet Structure (Material No.06AEB2) on the mating surfaces of the counter-fittings (31), (32) and (33).
(e) Install the counter-fittings (31), (32) and (33) with the bolts (35), (36) and (37), the bonding strap (10), the washer (38) and the nuts (34).
(f) Make sure that you install the electrical bonding dry.
(g) Tighten the nuts (34).
(h) Apply Polysulfide Sealant_General Purpose Brushable - (Material No.06AAA1) on the bonding point(s).
(i) Apply a fillet of Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) on the joints of the counter-fittings (31), (32) and (33).
(j) Apply a layer of Coating_- Flexible Structure (Material No.04QAB2) on the fillets.
(4) If the adjustment of the fuel panel access-door (4) is not correct (latches (24) do not close correctly) or if the clearance between the fuel panel access-door (4) and its frame is more than the limit:
(a) Apply sand on the surface of the polyamide shims (40) until the adjustment is correct.
(b) Replace polyamide shims (40) if necessary:
1 Loosen the nuts (44) and remove the bolts (43) and the latch fitting assembly (41).
2 Remove the rivets (42) and discard the polyamide shims (40).
3 Apply a layer of Polysulfide Sealant-Fuel Tank Interfay - (Material No.06ABC1) on the mating surfaces of the new polyamide shims (40).
4 Install the new AIPC 52-42-03-05-565 POLYAMIDE SHIM (40) with the new AIPC 52-42-03-05-563 RIVET (42).
5 Apply a fillet of Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) on the joints of the polyamide shims (40).
6 Apply a layer of Coating_- Flexible Structure (Material No.04QAB2) on the fillets.
7 Apply a layer of Polysulfide Sealant-Low Adhesion Fillet Structure (Material No.06AEB2) on the mating surfaces of the latch fitting assembly (41).
8 Install the latch fitting assembly (41) together with the bolts (43) and the nuts (44).
9 Tighten the nuts (44).
10 Apply a fillet of Polysulfide Sealant-General Purpose Fillet - (Material No.06AAB1) on the joints of the latch fitting assy (41).
11 Apply a layer of Coating_- Flexible Structure (Material No.04QAB2) on the fillets.
12 Apply Polysulfide Sealant_General Purpose Brushable - (Material No.06AAA1) to electrically bond the nuts (44).
(5) Measure the opening and closing loads of the fuel panel access-door (4) with the DYNAMOMETER 20 DAN (45 LBF) - PULL.
(6) Make sure that:
(a) The closing load at the center of the fuel panel access-door (4) is between 9 daN (20.2328 lbf) to 12 daN (26.9771 lbf).
(b) The opening load at the aft extremity of the fuel panel access-door (4) is less than 10 daN (22.4809 lbf).
(c) The opening angle of the fuel panel access-door (4) is more than 90 degrees.

Subtask 52-42-18-220-050-G ** ON A/C NOT FOR ALL

C. Check and Adjustment of the Fuel Panel Access-Door

Adjustment of the Fuel Panel Access-Door (192MB) ** ON A/C NOT FOR ALL

(1) Apply Testing Medium-Gap Measuring Epoxy - (Material No.14CHB1) on the recess of the hooks (21).
(2) Close the fuel panel access-door (4).
(3) Make sure that:
(a) Clearance J2 is 3 -1 mm or +1 mm (0.1181 -0.0394 in. or +0.0394 in.) for the forward side.
(b) Clearance J2 is 2 -1 mm or +1 mm (0.0787 -0.0394 in. or +0.0394 in.) for the aft side.
(c) Clearance J4 is 1.5 +1.5 mm or -0.5 mm (0.0591 +0.0591 in. or -0.0197 in.).
(d) Out-of-flush clearance J3 is 0 +0.7 mm or -0.7 mm (0.0000 +0.0276 in. or -0.0276 in.).
(e) Out-of-flush clearance J5 is 0 +1 mm or -1 mm (0.0000 +0.0394 in. or -0.0394 in.).
(f) The fuel panel access-door (4) is correctly installed in its frame.
(4) Open the fuel panel access-door (4).
(5) Make sure that clearance J1 between the spacers (26) and the hooks (21) is 0.5 +0.5 mm or -0.5 mm (0.0197 +0.0197 in. or -0.0197 in.).
(6) Do the adjustment that follows if:

Clearances J2 and J4 and out-of-flush clearances J3 and J5 are not in the tolerances.
The fuel panel access-door (4) is not correctly installed in its frame:

5. Close-up
Subtask 52-42-18-410-050-A

A. Close Access
(1) Make sure that the work area is clean and clear of tools and other items.
(2) Close door 192MB.
(3) Remove the access platform(s).

Subtask 52-42-18-865-052-A

B. Remove the safety clip(s) and the tag(s) and close this(these) circuit breaker(s):

PANEL	DESIGNATION	FIN	LOCATION
** ON A/C NOT FOR ALL
121VU	FUEL/RFL/DFL/SPLY	2QU	L24
** ON A/C NOT FOR ALL
121VU	FUEL/RFL/DFL/SPLY	2QU	L23
** ON A/C ALL
122VU	ELEC/RFL/SPLY/LOGIC	4PR	U29

[Rev.10 from 2021] 2026.04.01 03:47:45 UTC