COMPONENT MAINTENANCE MANUAL
00001059
TASK 21-22-91-100-805-A01
5.
Procedure 1: Heavy Alkaline Cleaning
A.
Reason for the Job
WARNING:
– DO NOT BREATHE THE FUMES. THE SOLVENTS ARE DANGEROUS.
– USE EYE PROTECTION. DO NOT LET THE SOLVENTS TOUCH YOUR SKIN.
– CLEAN THE PARTS IN A ROOM WHERE AIRFLOW IS SUFFICIENT.
– DO NOT CLEAN NEAR AN OPEN FLAME.
CAUTION:
– USE ALL PRECAUTIONS FOR THE PROTECTION OF YOUR EYES AND YOUR
SKIN WHEN YOU USE THE CLEANING MATERIAL IN THIS PROCEDURE. THIS
CLEANING MATERIAL CONTAINS SODIUM HYDROXIDE, WHICH IS HIGHLY
DANGEROUS.
Self-explanatory
B.
Job Set-up Information
WARNING: DO NOT USE MANUAL CLEANING PROCEDURES WITH THE MATERIALS
SPECIFIED IN THIS PROCEDURE. THIS PROCEDURE IS ONLY APPLICABLE
TO INDUSTRIAL EQUIPMENT AND PROCEDURES (AUTOMATIC CLEANING
MACHINE).
CAUTION:
DO NOT USE THIS MATERIAL FOR LIGHT ALLOYS. THE MATERIAL SPECIFIED
BELOW CONTAINS SODIUM HYDROXIDE: IT CAUSES CORROSION OF
ALUMINIUM-BASED ALLOYS.
(1)
Use materials which agree with the MIL-TT-C-490 MV specification.
(2)
Example: - Cleaning material (M48A).
C.
Job Set-up
SUBTASK 21-22-91-880-001-A01
(1)
Material Preparation
(a)
For the dilution proportions, refer to the manufacturer’s instructions.
Example: - Cleaning material (M48A). Dilution of the Cleaning material (M48A) with 5% of
water, for grease, baked grease, and scale particles.
D.
Procedure
WARNING: USE ALL PRECAUTIONS AS GIVEN IN THE WARNING NOTES AT THE TOP OF
PARA. A.
SUBTASK 21-22-91-130-001-A01
(1)
Cleaning
(a)
To clean the part, put it momentarily in a warm bath of cleaning material, at a temperature
of 70 °C to 80 °C (158 °F to 176 °F). An ultrasonic device must mix the bath.
(b)
Flush the part with water.
21-22-91
Page 4005
Dec 15/06
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