Table 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES

ARMY

TM 9-6650-235-13&P

MARINE CORPS

TM-08552A-13&P

Table 2-1. PREVENTIVE MAINTENANCE CHECKS AND SERVICES (CONT)

B--Before Operation

D--During Operation

A--After Operation

Interval

ITEM TO BE INSPECTED

Equipment

Item

Is not Ready/Available

No.

PROCEDURE

If:

EYEPIECE ASSEMBLY (Cont)

b. Clean exterior lens surface

of the eyepiece assembly with

denatured alcohol (item 1,

app D) and lens paper (item

ADAPTER TUBE ASSEMBLY

a. Ensure the adapter tube sub-

The adapter tube sub-

assembly (1) rotates freely

assembly binds during

within the adapter tube

operations.

assembly (2).

b. On early configuration,

The adapter tube or the

check to see that electric

electric light control

light control (3) operates

is damaged to the extent

without binding and the

that neither 24-volt nor

circuit breaker(s) (4) stay

115-volt power can be

pressed in.

used to illuminate the

illuminating head

assembly.

2-5