Common Information

TASK 70-11-03-300-503 Procedure To Degrease Parts By Aqueous Cleaning

General

CAUTION

USE ONLY THIS PROCEDURE OR TASK 70-11-26-300-503 SOLVENT WIPE METHOD WHEN THE CLEANING SOLUTION CAN GET CAUGHT INSIDE THE PART.

CAUTION

IF YOU USE A CHEMICAL CLEANING PROCEDURE OTHER THAN THIS PROCEDURE TO CLEAN PARTS THAT HAVE ALUMINUM PAINT COATING, THEN THAT CLEANING PROCEDURE WILL CAUSE DETERIORATION OR REMOVAL OF THE COATING.

This procedure is the only chemical cleaning procedure that is approved to clean aluminum parts or parts with aluminum paint coatings.

This procedure is used to remove oil and light soil from the engine parts, before you do any chemical cleaning and stripping procedures. This procedure extends the life of the cleaning and stripping solutions used in the subsequent processes. (Refer to the Engine Manual for any restrictions.)

Use the aqueous wipe cleaning procedures when it is necessary to clean only local areas on parts.

The temperature control is important because temperatures higher than the recommended maximum cause deterioration of the solution concentrations, which subsequently makes the solution ineffective.

It is permitted to use the aqueous cleaning tank when you clean titanium and non-titanium parts for immersion and spray wash methods and to use the cleaning process to remove shop soils as an alternative to TASK 70-11-01-300-503 vapor degreasing when subsequent processes are blasting, chemical, or inspection.

For this cleaning procedure to be most effective, use mechanical agitation (such as, mixers, circulating pumps, or up-down agitators) to cause constant movement of the solution in the tank. Air agitation is not recommended because it continuously decreases the temperature of the solution and can drive off active ingredients.

Refer to SPM TASK 70-10-00-100-501 for other requirements that include the sequence of procedures, the quality of equipment and procedures and optional procedure parameters.

Preliminary Requirements

Safety Requirements

WARNING

IT IS THE RESPONSIBILITY OF THE OPERATOR TO OBTAIN AND OBSERVE THE MANUFACTURER'S MATERIAL SAFETY SHEETS FOR MATERIAL SAFETY INFORMATION (SUCH AS HAZARDOUS INGREDIENTS; PHYSICAL/CHEMICAL CHARACTERISTICS; FIRE, EXPLOSION, REACTIVITY, AND HEALTH HAZARD DATA; PRECAUTIONS FOR SAFE HANDLING; AND USE AND CONTROL MEASURES), AND ALSO TO TAKE LOCAL REGULATIONS INTO CONSIDERATION.

CAUTION

USE ONLY THIS PROCEDURE OR TASK 70-11-26-300-503 SOLVENT WIPE METHOD WHEN THE CLEANING SOLUTION CAN GET CAUGHT INSIDE THE PART.

Procedure

1. SUBTASK 70-11-03-300-001-001 Immersion Tank Method

   
   CAUTION
   THE MAXIMUM SOLUTION TEMPERATURE MUST NOT BE HIGHER THAN THAT SPECIFIED.

   NOTE

   This immersion cleaning method is an alternative to TASK 70-11-01-300-503 vapor degreasing.

   NOTE

   Solution Code 114 is a low foam solution when used at the temperatures specified. Low foam solutions prevent the problems with foam during agitation, rinsing and waste treatment. It is not permitted to add antifoam additives to the products that foam in this immersion method.

   1. If there is loose or powdery soil on the part, use a high pressure water spray unit to remove the loose or powdery soil from the part. Refer to SPM TASK 70-10-00-100-501 for high-pressure water spray unit (power washer) information

   2. Put the part fully in a tank filled with one of the subsequent aqueous cleaning solutions. Refer to TASK 70-11-03-100-501 for the make-up of solutions.

      1. Use Solution Code 4 at 130 to 140 deg F (54 to 60 deg C).

      2. Use Solution Code 21 at 120 to 160 deg F (49 to 71 deg C).

      3. Use Solution Code 22 at 140 to 180 deg F (60 to 82 deg C).

      4. Use Solution Code 114 at 130 to 140 deg F (54 to 60 deg C).

      5. Use Solution Code 117 at 140 to 170 deg F (60 to 77 deg C).

      6. Use Solution Code 123 at 90 to 190 deg F (32 to 88 deg C).

      7. Use Solution Code 124 at 140 to 170 deg F (60 to 77 deg C).

      8. Use Solution Code 125 at 140 to 160 deg F (60 to 71 deg C).

      9. Use Solution Code 126 at 140 to 180 deg F (60 to 82 deg C).

      10. Use Solution Code 127 at 110 to 120 deg F (43 to 49 deg C).

      11. Use Solution Code 134 at 155 to 165 deg F (68 to 74 deg C).

      12. Use Solution Code 149 at 122 to 158 deg F (50 to 70 deg C).

      13. Use Solution Code 157 at 140 to 180 deg F (60 to 82 deg C).

      14. Use Solution Code 172 at 140 to 160 deg F (60 to 71 deg C).

      15. Use Solution Code 173 at 140 to 150 deg F (60 to 66 deg C).

      16. Use Solution Code 178 at 140 to 150 def F (60 to 66 deg C).

      17. Use Solution Code 179 at 140 to 180 deg F (60 to 82 deg C).

          NOTE

          For Solution Code 124, soak time is to 10 to 15 minutes with a 30-minute maximum.

          NOTE

          The maximum soak time for Solution Code 149 is 40 minutes.

          NOTE

          The maximum soak time for Solution Code 178 is 15 minutes.

   3. Soak the part in the solution for 5 to 30 minutes.

   4. Flush the part fully over the aqueous cleaner tank; use air-assisted pressure cold water spray.

   5. Put the part fully in cold water. If necessary, scrub the part with a non-metallic brush, CoMat 05-126 ABRASIVE PAD, ALUMINUM OXIDE, VERY FINE or CoMat 05-125 ABRASIVE PAD, SILICON CARBIDE, ULTRA-FINE.

   6. Use an air-assisted pressure spray gun to flush part with cold, warm, or hot water.

   7. Put the part fully in hot water at 150 to 200 deg F (66 to 93 deg C) until the temperature of the part increases sufficiently to flash dry. This step is not necessary for parts that go immediately to an aqueous chemical procedure or a wet abrasive blast procedure.

      1. If the water on the part surface does not flash off when the part comes out of the hot water, then the time interval that the part stayed in the hot water was too short to increase the part temperature sufficiently.

   8. If necessary, dry with air.

2. SUBTASK 70-11-03-300-001-002 Spray Wash Machine Method

   NOTE

   This spray wash cleaning method is an alternative to TASK 70-11-01-300-503 vapor degreasing.

   1. If there is loose or powdery soil on the part, use a high pressure water spray unit to remove the loose or powdery soil from the part. Refer to SPM TASK 70-10-00-100-501 for high-pressure water spray unit (power washer) information

   2. Put parts into the spray wash machine so that the direct spray is able to touch most of the areas of each part.

      NOTE

      These aqueous cleaner solutions are all low foam cleaners when used at the temperatures specified.

   3. Spray wash the parts in a 5 to 30 minutes wash cycle with one of the subsequent aqueous cleaning solutions. Refer to TASK 70-11-03-100-501 for the make-up of the solution.

      1. Use Solution Code 75 at 130 to 140 deg F (54 to 60 deg C).

      2. Use Solution Code 128 at 155 to 165 deg F (68 to 74 deg C).

      3. Use Solution Code 129 at 120 to 160 deg F (49 to 71 deg C).

      4. Use Solution Code 130 at 150 to 160 deg F (66 to 71 deg C).

      5. Use Solution Code 131 at 90 to 190 deg F (32 to 88 deg C).

      6. Use Solution Code 132 at 140 to 160 deg F (60 to 71 deg C).

      7. Use Solution Code 133 at 145 to 165 deg F (63 to 74 deg C).

      8. Use Solution Code 158 at 140 to 150 deg F (60 to 66 deg C); one recycle is permitted.

      9. Use Solution Code 171 at 140 to 160 deg F (60 to 71 deg C).

      10. Use Solution Code 180 at 130 to 180 deg F (54 to 82 deg C).

   4. Flush fully with clean hot water at 150 to 200 deg F (66 to 93 deg C) until the temperature of the part increases sufficiently to flash dry. This step is not necessary for parts that go immediately to an aqueous chemical procedure or a wet abrasive blast procedure.

      1. If the water on the part surface does not flash off when the part comes out of the hot water, then the time interval of the hot water flush was too short to increase the part temperature sufficiently.

   5. If necessary, dry with air.

3. SUBTASK 70-11-03-300-002 Aqueous Spray or Wipe (with Rinsing) Method (Deleted)

   1. This subtask has been deleted.

4. SUBTASK 70-11-03-300-001-003 Aqueous Spray or Wipe (with Rinsing) Method

   NOTE

   This aqueous wipe cleaning is for local application.

   NOTE

   Be sure to shake the solution before use.

   1. If there is loose or powdery soil on the part, use a high pressure water spray unit to remove the loose or powdery soil from the part. Refer to SPM TASK 70-10-00-100-501 for high-pressure water spray unit (power washer) information

   2. Spray or wipe the part with one of the solutions in the subsequent list. Refer SPM TASK 70-11-03-100-501 for the make-up of the solution.

      1. Solution Code 4

      2. Solution Code 21

      3. Solution Code 22

      4. Solution Code 114

      5. Solution Code 117

      6. Solution Code 123

      7. Solution Code 124

      8. Solution Code 127

      9. Solution Code 130

      10. Solution Code 132

      11. Solution Code 133

      12. Solution Code 171

   3. If necessary, scrub the part with a non-metallic brush, CoMat 05-126 ABRASIVE PAD, ALUMINUM OXIDE, VERY FINE or CoMat 05-125 ABRASIVE PAD, SILICON CARBIDE, ULTRA-FINE.

   4. Rinse the area with clean hot water, at a temperature of 150 to 200 deg F (66 to 93 deg C), or steam until the temperature of the part is increases sufficiently to flash dry. This step is not necessary for parts that go immediately to an aqueous chemical procedure or a wet abrasive blast procedure.

      1. If the water on the part surface does not flash off when the part comes out of the hot water, then the time interval of the hot water rinse or steam rinse was too short to increase the part temperature sufficiently.

   5. If necessary, air dry.

5. SUBTASK 70-11-03-300-003 Aqueous Spray or Wipe (Without Rinsing) Method (Deleted)

   1. This subtask has been deleted.

6. SUBTASK 70-11-03-300-001-004 Aqueous Spray or Wipe (Without Rinsing) Method

   NOTE

   This aqueous wipe cleaning is for local application.

   NOTE

   The above aqueous wipe cleaner is used as received on all parts other than bearings to remove light oils, grease, fingerprints, dust, and soot during dimensional/visual inspection, assembly and test.

   1. If there is loose or powdery soil on the part, use a high pressure water spray unit to remove the loose or powdery soil from the part. Refer to SPM TASK 70-10-00-100-501 for high-pressure water spray unit (power washer) information

   2. Spray or wipe the part with CoMat 01-459 AQUEOUS WIPE CLEANER as received. If necessary, scrub the part with a non-metallic brush, CoMat 05-126 ABRASIVE PAD, ALUMINUM OXIDE, VERY FINE or CoMat 05-125 ABRASIVE PAD, SILICON CARBIDE, ULTRA-FINE.

   3. Wipe the area dry with a clean cloth.