Repair of Bulk Door Seal

TASK 52-33-18-300-001-A
Repair of Bulk Door Seal

CAUTION: IMMEDIATELY AFTER YOU OPEN THE CARGO COMPARTMENT DOOR, RECORD ON THE WORK CARD ON THE DOOR, THE DATE AND TIME WHEN YOU OPENED IT. IF THE CARGO COMPARTMENT DOOR STAYS OPEN FOR 12 HOURS OR MORE, YOU MUST BLEED THE HYDRAULIC SYSTEM RELATED TO IT. IF YOU DO NOT OBEY THESE PRECAUTIONS, THE DOOR CAN CLOSE SUDDENLY WHEN YOU SET THE DOOR TO "CLOSE". THIS CAN CAUSE DAMAGE TO THE DOOR AND TO THE AIRCRAFT STRUCTURE.

ZONE: 827

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	BLOCK 20X10X10 CM (6.5X3X3 IN)-WOODEN
No specific	1	CLOTH-EMERY, VERY FINE
No specific	1	SPATULA - NON METALLIC

B. Consumable Materials

REFERENCE	DESIGNATION
(Material No.06CED1)	Silicone Adhesive Sealant-Rubber & Plastic Bonding One part -
(Material No.06CMD9)	Silicone Adhesive Sealant-General Purpose One part legacy
(Material No.08BPA1)	Non Aqueous Cleaner-Non structural use - -
(Material No.13XJA1)	Laminate Repair Patch-Pax Door Seal - -
(Material No.14HHB1)	Film-Rubber Bonding Polyester Foil -
(Material No.14SBA1)	Textile-Lint free Cotton -

C. Work Zones and Access Panels

ZONE/ACCESS	ZONE DESCRIPTION
827	BULK CARGO COMPARTMENT DOOR

D. Referenced Information

REFERENCE	DESIGNATION
TASK 52-30-00-860-006-A	Open the Bulk Cargo-Compartment Door
TASK 52-30-00-860-008-A	Close the Bulk Cargo-Compartment Door
TASK 52-33-18-000-001-A	Removal of Bulk Door Seal
TASK 52-33-18-400-001-A	Installation of the Bulk Door Seal
Repair of Minor Cuts and Small Punctures
Splice Repair
Wooden Bonding Block

3. Job Set-up
Subtask 52-33-18-010-052-A ** ON A/C NOT FOR ALL

A. Get Access
(1) Open the bulk cargo compartment-door (Ref. AMM TASK 52-30-00-860-006).
(2) Remove the bulk door seal and, if necessary, disconnect the door actuator (Ref. AMM TASK 52-33-18-000-001).
(a) If you do not disconnect the door actuator, make sure that you do not damage the bulk door seal during the repair.

4. Procedure
Subtask 52-33-18-350-050-A ** ON A/C NOT FOR ALL

A. Repair of the Chafe Marks

Repair of Minor Cuts and Small Punctures ** ON A/C NOT FOR ALL

(1) Prepare the chafe mark with CLOTH-EMERY, VERY FINE.
(2) Carefully degrease the chafe mark with Non Aqueous Cleaner-Non structural use - - (Material No.08BPA1) and a Textile-Lint free Cotton - (Material No.14SBA1) .
(3) Apply a thin layer of Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) to the chafe mark with a SPATULA - NON METALLIC.
(4) Prevent a dust layer on the treated chafe marks during the Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) drying period of 10 to 12 hours.

Subtask 52-33-18-330-050-A ** ON A/C NOT FOR ALL

B. Repair of Minor Cuts and Small Punctures

Repair of Minor Cuts and Small Punctures ** ON A/C NOT FOR ALL

NOTE: A minimum of 24 hours is necessary to do this repair procedure. If less time is available, it is recommended to replace the defective door seal with the new one (Ref. AMM TASK 52-33-18-000-001) and (Ref. AMM TASK 52-33-18-400-001).

NOTE: A repair of the minor cuts are only permitted if the cuts are not longer than 25.4 mm (1.0 in.).
A repair of the small punctures are only permitted if:

the punctures are less than 6.4 mm (0.25 in.) and the distance between each punctere is more than 25.4 mm (1.0 in.),
there are not more than three punctures within a section of 200.0 mm (7.87 in.).
In all other cases prepare a splice repair of the door seal (refer to para: "Repair of Heavily Damaged Areas").

(1) Drill stop holes of dia. 2.0 mm (0.08 in.) at the ends of the cuts.
(2) Push the seal to open the cut and very carefully prepare the surfaces of the cut or the puncture with a CLOTH-EMERY, VERY FINE.
(3) Prepare the surface of the repair area with a CLOTH-EMERY, VERY FINE.
(4) Carefully degrease the repair area with Non Aqueous Cleaner-Non structural use - - (Material No.08BPA1) and a Textile-Lint free Cotton - (Material No.14SBA1) .
(5) Apply a thin coat of Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) or Silicone Adhesive Sealant-Rubber & Plastic Bonding One part - (Material No.06CED1) to the opposite surfaces of the cut.
(6) Press the surfaces of the cut puncture together and leave them to dry for some minutes.
(7) Cut a piece of Laminate Repair Patch-Pax Door Seal - - (Material No.13XJA1) to the size of the repair area.
(8) Apply a thin layer of Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) or Silicone Adhesive Sealant-Rubber & Plastic Bonding One part - (Material No.06CED1) to the repair area and fill the stop holes.
(9) Put the prepared replacement tissue onto the repair area so that it is as smooth as the seal surface.
(10) Cover the repair area with a layer of foil Film-Rubber Bonding Polyester Foil - (Material No.14HHB1) and put the seal in the BLOCK 20X10X10 CM (6.5X3X3 IN)-WOODEN.
(11) Compress the seal over a period of 24 hours in the wooden bonding block with a clamp.
(12) Remove the wooden bonding block and the foil from the repair area of the seal.
(13) Prepare the repair area with CLOTH-EMERY, VERY FINE to get a smooth surface of the seal.

Subtask 52-33-18-330-051-A ** ON A/C NOT FOR ALL

C. Repair of Heavily Damaged Areas (Splice Repair)

Splice Repair ** ON A/C NOT FOR ALL

Wooden Bonding Block ** ON A/C NOT FOR ALL

(1) Cut the seal at a minimum distance of 50.0 mm (1.97 in.) from the next inflation hole to remove the damaged section of the seal.

NOTE: The minimum repair length of the replacement section is:

for a straight section, 200.0 mm (7.87 in.)
for a curved section, 200.0 mm (7.87 in.) measured from the edge of the corner.

(2) For the straight and the curved section, cut a section of the replacement seal to the same length as the removed section.

NOTE: Make sure that the quantity of the inflation holes are the same as in the removed section.

(3) Carefully remove the first layer of tissue reinforcement from the ends of the seal and the replacement sections over a length of 25.4 mm (1.0 in.) (repair area).
(4) Prepare the surfaces of the repair areas with CLOTH-EMERY, VERY FINE.
(5) Carefully degrease the surface with Non Aqueous Cleaner-Non structural use - - (Material No.08BPA1) and a Textile-Lint free Cotton - (Material No.14SBA1) .
(6) Apply a thin layer of Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) or Silicone Adhesive Sealant-Rubber & Plastic Bonding One part - (Material No.06CED1) to the ends of the seal and the replacement sections.
(7) Press and hold the ends of the replacement section and the seal together and let them dry for some minutes.
(8) Cut a piece of Laminate Repair Patch-Pax Door Seal - - (Material No.13XJA1) to a size of the repair areas.
(9) Apply a layer of Silicone Adhesive Sealant-General Purpose One part legacy (Material No.06CMD9) or Silicone Adhesive Sealant-Rubber & Plastic Bonding One part - (Material No.06CED1) to the contact surface of the replacement tissue and the repair areas.
(10) Wind the replacement tissue around the repair areas.
(11) Cover the repair area with a layer of foil Film-Rubber Bonding Polyester Foil - (Material No.14HHB1) and put the seal in the BLOCK 20X10X10 CM (6.5X3X3 IN)-WOODEN.
(12) Compress the seal over a period of 24 hours in the wooden bonding block with a clamp.
(13) Remove the wooden bonding block and the foil from the repair area of the seal.
(14) Prepare the repair area with CLOTH-EMERY, VERY FINE to get a smooth surface on the seal.

5. Close-up
Subtask 52-33-18-410-052-A ** ON A/C NOT FOR ALL

A. Close Access
(1) Install the bulk door seal and, if necessary, connect the door actuator (Ref. AMM TASK 52-33-18-400-001).
(2) Close the bulk cargo-compartment door (Ref. AMM TASK 52-30-00-860-008).

[Rev.10 from 2021] 2026.04.01 01:43:34 UTC