PWA 83 - Cleaning of Parts Before Adhesive Bonding, Sealing or Filling [PW11]

TASK 70-27-00-910-810-A
PWA 83 - Cleaning of Parts Before Adhesive Bonding, Sealing or Filling

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

CAUTION: DO NOT:

AIR BLAST CLEANED PARTS
USE LIQUID SOLVENT TO CLEAN VAPOR DEGREASED PARTS. USE ONLY VAPORIZED SOLVENT.

IF YOU NOT OBEY THESE INSTRUCTIONS, DAMAGE TO EQUIPMENT CAN OCCUR.

CAUTION: AFTER YOU CLEAN THE PARTS WITH AN AQUEOUS SOLUTION AND RINSE THEM, MAKE SURE THAT THEY SHOW A BREAK-FREE WATER FILM. IF NOT, CLEAN THE PARTS AGAIN UNTIL THERE IS A BREAK-FREE WATER FILM AFTER YOU RINSE THEM. IF YOU NOT OBEY THESE INSTRUCTIONS, THE RESULTS OF THE ADHESIVE BONDING, SEALING OR FILLING OPERATIONS WILL BE UNSATISFACTORY.

CAUTION: USE CLEAN GLOVES WHEN:

YOU CLEAN THE PARTS WITH SOLVENT
YOU TOUCH THE CLEANED PARTS AND ASSEMBLIES.

IF YOU DO NOT USE CLEAN GLOVES, CONTAMINATION OF THE BOND SURFACES AND INCORRECT BONDING CAN OCCUR.

CAUTION: MAKE SURE THAT THERE IS NO CONTAMINATION ON YOUR CLOTHES. CONTAMINATION WILL PREVENT STRONG BONDS.

1. Reason for the Job
Use this procedure to do a cleaning of parts before adhesive bonding, sealing or filling.
2. Job Set-up Information
A. Consumable Materials

REFERENCE	DESIGNATION
(Material No.P05-038)	cheesecloth - bleached, new, woven, unsized
(Material No.P05-104)	cloth, emery
(Material No.P05-132)	Abrasive Paper
(Material No.P05-139)	Cloth, Emery
(Material No.P11-065)	Acetone
(Material No.P11-078)	alcohol, isopropyl

3. Job Set-up
Subtask 70-27-00-941-052-A ** ON A/C NOT FOR ALL

A. Not Applicable

4. Procedure
Subtask 70-27-00-110-067-A ** ON A/C NOT FOR ALL

A. Cleaning of Aluminum Alloy Parts before Adhesive Bonding, Sealing or Filling
(1) PWA 83-A4 Cleaning Method.
(a) Wipe with clean P05-038cheesecloth - bleached, new, woven, unsized wet with P11-078alcohol, isopropyl - reagent grade or Acetone (Material No.P11-065) .

NOTE: It is permitted to use a higher purity reagent grade for P11-078alcohol, isopropyl.

NOTE: Because Acetone (Material No.P11-065) dries rapidly, additional wiping may be necessary to get a clean surface.

(b) Solvent wiped surfaces must be fully dried in air at ambient temperature or in an oven at 250 deg.F (121.11 deg.C) maximum. Drying time must be sufficient to remove remaining solvent harmful to bonding, sealing or filling processes.

Subtask 70-27-00-110-068-A ** ON A/C NOT FOR ALL

B. Cleaning of Titanium Alloy Parts before Adhesive Bonding, Sealing or Filling
(1) PWA 83-B2 Cleaning Method.
(a) Wipe with clean P05-038cheesecloth - bleached, new, woven, unsized wet with P11-078alcohol, isopropyl - reagent grade or Acetone (Material No.P11-065)

NOTE: It is permitted to use a higher purity reagent grade for P11-078alcohol, isopropyl.

NOTE: Because Acetone (Material No.P11-065) dries rapidly, additional wiping may be necessary to get a clean surface.

Subtask 70-27-00-110-069-A ** ON A/C NOT FOR ALL

C. Cleaning of Other Alloy Parts before Adhesive Bonding, Sealing or Filling
(1) PWA 83-C4 Cleaning Method.
(a) Wipe with clean P05-038cheesecloth - bleached, new, woven, unsized wet with P11-078alcohol, isopropyl - reagent grade or Acetone (Material No.P11-065) .

NOTE: It is permitted to use a higher purity reagent grade for P11-078alcohol, isopropyl.

NOTE: Because Acetone (Material No.P11-065) dries rapidly, additional wiping may be necessary to get a clean surface.

Subtask 70-27-00-110-070-A ** ON A/C NOT FOR ALL

D. Cleaning Of Non-Metallic Materials Before Adhesive Bonding, Sealing or Filling
(1) Use one of the applicable methods that follow:
(a) PWA 83-D1 Cleaning Method.
1 Specified surfaces must be abraded with P05-104cloth, emery or P05-139Cloth, Emery or Abrasive Paper (Material No.P05-132) to get a uniformly roughened surface. P05-104cloth, emery or P05-139Cloth, Emery or Abrasive Paper (Material No.P05-132) must be kept free from contamination harmful to adhesive bonding, sealing or filling processes.
2 Remove remaining abrasive by vacuuming or other method which keeps the surface free of contamination harmful to adhesive bonding, sealing or filling.
(b) PWA 83-D2 Cleaning Method.

NOTE: See Step 4.D.(1)(c) for polymere exlusions when wiping with Acetone (Material No.P11-065) - reagent grade.

1 Wipe with clean P05-038cheesecloth - bleached, new, woven, unsized wet with P11-078alcohol, isopropyl - reagent grade or Acetone (Material No.P11-065) .

NOTE: It is permitted to use a higher purity than reagent grade for P11-078alcohol, isopropyl

NOTE: Because Acetone (Material No.P11-065) dries rapidly, additional wiping may be necessary to get a clean surface.

2 Solvent wiped surfaces must be fully dried in air at ambient temperature or in an oven at 250 deg.F (121.11 deg.C) maximum. Drying time must be sufficient to remove remaining solvent harmful to bonding, sealing or filling processes.
(c) PWA 83-D4 Cleaning Method.
1 Use the procedure in Step 4.D.(1)(b), except solvent wiping of polyurethanes and fluoroelastomers must be done only with P11-078alcohol, isopropyl - reagent grade (or higher purity).
2 Solvent wiping of polyetherimide materials bonded with silicone materials must be by procedure Step 4.D.(1)(b), except the solvent must be Acetone (Material No.P11-065) (or higher purity) only.

5. Close-up
Subtask 70-27-00-942-050-A ** ON A/C NOT FOR ALL

A. Not Applicable

[Rev.10 from 2021] 2026.04.01 02:20:31 UTC