Figure 4-1. Dry Cell Identification Tag.

TM 38-260

b. All dry cell batteries shall be removed from the equipment and disposed of tags bearing descriptive information

shall be placed in the location occupied by the batteries. The tag shall state: "DRY CELL HAS BEEN REMOVED. DRY

CELL IDENTIFICATION NO. , DESCRIPTION, GOVT TAG NO. OF BASIC UNIT. " (see Fig 4-1).

Figure 4-1. Dry Cell Identification Tag.

c. Preservatives which could interfere with the operation of the equipment shall not be applied. Machined ferrous

metal surfaces that are not plated shall be preserved with preservative oil P-10, grade 30, of table 2-1. Avoid excessive

application that would cause dripping of the preservative materials.

d. Electrical control panels, switch boxes, and such items disconnected from electric power shall have openings,

resulting from the removal of conduit, sealed with waterproof adhesive tape conforming to PPP-T-60, type III, class 1.

Contact points and copper components such as knife switches and fuse clips shall not be preserved. All switches shall

be left in the open/off position.

e. Cleaning. Cleaning shall be accomplished only by personnel experienced in servicing this type of equipment.

When using compressed air, be sure the air is dry and the pressure- does not exceed 25 PSI (206 kPa). Avoid excessive

use of solvent. Most intricate assemblies can be cleaned with a soft-bristle brush or a clean, lint-free cloth, or paper.

Pens or recording-type instruments shall be removed and cleaned in aqueous ammonia, rinsed in alcohol, and replaced.

NOTE

DISASSEMBLY SHALL BE AVOIDED UNLESS IT IS PERFORMED BY AN INSTRUMENT

SPECIALIST.

f. Fingerprint removal. Finished ferrous surfaces of large items, such as bench-type micrometers, shall be treated

to remove fingerprints by cleaning process C-8, as described in paragraph 2-2.

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