Chapter 4. ORGANIZATIONAL MAINTENANCE

ORGANIZATIONAL MAINTENANCE

40. General

Organizational maintenance of the tube tester is limited to

preventive maintenance (par. 42) and to the replacement of the

test adapters (fig. 10), electrical plug connector, electrical clip,

insulator clip, knobs (04 through 031, fig. 1), indicator light lens,

and electron tube retainer and shield. The operating instructions

for the tube tester are contained in paragraphs 13 through 31.

4 1 . Tools and Materials Required

The tools and materials required for organizational maintenance

are as follows:

a. Tools. The only tools required are those tools normally avail-

able to the repairman-user because of his assigned mission.

b. Materials.

(1)

Cleaning

compound.

(2)

Cleaning

cloth.

(3)

Sandpaper,

fine.

4 2 . Preventive Maintenance

a. DA Form 11266. DA Form 11-266 (fig. 9) is a preventive

maintenance checklist to be used by the second echelon. Items not

applicable to the equipment are lined out in the figure. References

to the ITEM block in the figure are to paragraphs that contain

additional maintenance information pertinent to the particular

item. Instructions for the use of the form appear on the form.

b. Items. The information shown in this subparagraph is sup-

plementary to DA Form 11-266. The item numbers correspond

to the ITEM numbers on the form.

Warning: Disconnect all power before performing the follow-

ing operations. After power is disconnected, some capacitors still

may retain dangerous voltages. Before touching exposed electri-

cal parts, short-circuit the parts to ground. When maintenance

is completed, replace the equipment in its case, reconnect the

power, and check for satisfactory operation.