Section IV. MAINTENANCE OF TEST SET

TM 11-5995-1097-40

Section IV. MAINTENANCE OF TEST SET

are toxic. Provide adequate ventilation

3-11. General

This section contains preliminary inspection, cleaning,

and avoid prolonged breathing of vapors.

disassembly and repairs, and repainting and refinishing

DO NOT use near flames or extreme heat.

instructions. After repairs or replacement have been made to

Since cleaning compound dissolves

components of the test set, it should be ready for return to

natural oils, avoid prolonged contact with

service. To verify its condition, conduct the operational checks

skin. If compound it taken internally,

described in TM 115895109712 and the test procedures in

consult a physician immediately.

section V.

(2) Remove ground-in dirt or grease using a lint-

3-12. Inspection

free cloth dampened (not wet) with cleaning compound.

Preliminary maintenance on the test set consists of inspection

(3) Rinse cleaned areas with clean water and

upon receipt; and cleaning (para 3-13) if required.

allow to dry.

a. Inspection. Inspection is the evaluation of a

b. Interior Surfaces.

repairable item to determine the extent of repair, modification,

WARNING

or replacement necessary to make the item completely

Compressed air is dangerous and can

serviceable. Inspection includes, but is not limited to the

cause bodily harm. Compressed air shall

following:

not be used for cleaning purposes except

(1) A check of maintenance forms and records

when reduced to less than 29 pounds per

attached to the equipment.

square inch (psi); and then only with

(2) A check of DA Pam 310-1 for any modification

protective equipment to prevent chips or

work order (MWO) pertaining to the test set.

particles from entering the eyes or

(3) A visual inspection of the test set for

breaking the skin of the operator or other

compliance with all MWO's.

personnel.

(4) A listing of outstanding MWO's on DA Form

CAUTION

2404.

Air jet can damage delicate components.

b. Visual Inspection.

(1) Exterior surface. Inspect exterior surfaces for

Be careful NOT to place air jet too close

obvious signs of damage. Check metal surfaces for signs of

to small coils or delicate components.

rust and corrosion.

NOTE

(2) Controls and indicators. Inspect controls for

When necessary to disturb the position of

smooth operation and alinement of position. Check to see that

wiring and harness assemblies for

indicator assembly is intact and complete.

cleaning purposes, always replace them

(3) Wiring. Inspect wiring for breaks, cuts, or worn

to their original position after cleaning.

insulation.

(1) Remove dust, dirt, and foreign matter from all

(4) Connectors. Inspect connectors for damage

surfaces, components, and wiring using air jet and soft bristled

such as bent pins and dented or deformed casings.

brush.

(5) Include all results of the visual inspection on

(2) Remove dust from connector holes and

maintenance forms or work tag.

recesses using air jet and soft bristled brush.

3-13. Cleaning

CAUTION

NOTE

Be careful when using lint-free cloth to

Do not perform needless disassembly of

wipe cleaning compound from resistors,

equipment for the purpose of cleaning.

as marking colors may be removed.

Clean the equipment only to the extent

(3) Wipe interior surfaces using lint-free cloth

required for serviceability.

dampened (not wet) with cleaning compound.

a. Exterior Surfaces.

(4) Dry surfaces immediately with lint-free cloth.

(1) Remove loose dirt or dust from outside

(5) Wipe dust and dirt from casings, pins and

surfaces of case and front panel using lint-free cloth and/or

cable clamps using lint-free cloth dampened (not wet) with

soft bristled brush.

cleaning compound.

WARNING

(6) Dry surfaces immediately with lint-free cloth.

Cleaning compound is flammable and its

3-14. General Repair Procedures

fumes

The subassemblies and parts in the test set can be easily

reached and replaced without the use of special tools. When

replacing parts, observe the precautions listed below.

3-16