Section II. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)

ARMY

TM 9-6650-235-13&P

MARINE CORPS

TM-08552A-13&P

c. Illuminating Head Assembly (15) and Blind

Illuminating Head Assembly (16). The illuminating head

assembly (15) is equipped with an adjustable mirror

assembly (17) and the blind illuminating head assembly

(16) is equipped with an adjustable inspection mirror

(18). Since the field of view (FOV) desired is at the

option of the operator, there is no established correct

setting position for the mirror assembly (17) or the

inspection mirror (18).

Section II. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)

2-3.

GENERAL

(2) During Operation Service. This service

consists of detecting unsatisfactory performance while

a. Before You Operate. Always keep in mind the

operating the M3 Borescope. The operator should be

CAUTIONS and WARNINGS. Perform your before (B)

alert for any unusual noises, odors, or any other

PMCS.

malfunctions.

b. While You Operate. Always keep in mind the

(3) After Operation Service. This is a service

CAUTIONS and WARNINGS. Perform your during (D)

designed to correct, where possible, all operational

PMCS.

deficiencies so that the M3 Borescope will be ready to

operate when required.

c. After You Operate. Be sure to perform your after

(A) PMCS.

b. The interval column of your PMCS table tells you

when to do a certain check or service.

d. If Your Equipment Fails to Operate.

Troubleshoot with proper equipment. Report any

c. Before you begin to check specific items,

deficiencies, using the proper forms. (See DA PAM 738-

remember that there are some things to be checked that

750).

are common in all areas on the M3 Borescope. Always

keep the items listed below in mind as you perform your

2-4.

PMCS PROCEDURES.

PMCS.

a. The preventive maintenance checks and

(1) Loose Screws. A loose screw is

services table lists the inspections and care of your

sometimes difficult to spot without actually applying a

equipment required to keep it in good operating

screwdriver. However, you can often tell by a bright area

condition. (The numbers in the item number column

around the base of the screw or by attempting to insert a

shall be used as a source of item numbers for the TM

fingernail under the screw head.

number column on DA Form 2404, Equipment Inspection

and Maintenance Worksheet, in recording results of

PMCS.) The services are divided as follows:

(1) Before Operation Service. This is a brief

service to insure the M3 Borescope is ready for

operation.

2-3