TASK 70-23-00-100-001
1 . General.
A.When necessary to remove surface coatings to permit inspection or repair, the methods described in the following procedures are recommended. Parts or components must be cleaned in accordance with the appropriate cleaning method referenced in the procedures, to permit uniform stripping action. Some materials or solutions used in paint stripping are similar to cleaning solutions; these are included to prevent use of cleaning solutions for paint stripping, which would rapidly impair their use as cleaners. Stripping solutions, generally, contain caustic and other compounds which can destroy aquatic life when released into natural waterways. Provisions for treatment or isolated disposal of waste should be incorporated into the drainage systems for all such effluents.
NOTE:
TASK 70-23-23-330-008, Removal of Coatings by High Pressure Water Stripping, can be used as an alternative to the chemical stripping processes in this section if the part geometry gives line-of-sight access and all of the process requirements in 70-23-23 are correctly documented and approved.
2 . Metal Sprayed Coatings.
Subtask 70-23-00-110-001
B.Various metal sprayed coatings are applied to engine parts during initial manufacture and/or as a method of repair. Before stripping coatings from specific areas, the presence of coatings in other areas should be ascertained. If present, the part should be masked to prevent the indiscriminate removal of such coatings. The part is to be masked as directed by the repair procedure for the specific part, or as stated in the particular stripping procedure.