Access Doors. - TM-43-01560208

TM 43-0156

Step

Function

Mech

Insp

2 Secure ladder and steps to the catwalk with "J"

cont

bolts fabricated from flat washers (5310-00-833-

3340), nuts (5310-00-720-8528), and bolts (530o-

00-3282-4281).

(m) Access Doors.

1 Coat the rubber door seals with silicone (6850-00-

295-7685).

2 Securely lock all outside access doors and seal

with tape (7510-00-916-9659). Tape 7510-00-890-

9875 may be used as a substitute.

3 Place the keys with logbook.

(n) Marking. Mark power unit in accordance with

appendix E. Place markings on plywood cover (fan

shroud end).

(o) Depreservation Guide.

1 Complete two DA Forms 2258.

2 Place one copy in a plastic bag (8105-00-902-

6508), heat seal or staple bag, and mark the bag

to indicate "DEPRESERVATION GUIDE."

3 Secure the preserved guide to the control panel in

the control unit.

4 Place the other copy in the logbooks.

b. Control Unit.

(1) Main Air Circuit Breakers.

(a) Remove the arc chutes (nine) and phase barriers.

(b) Install phase barriers back onto the breakers.

(d) Place arc chutes into the three plywood boxes

(37-3/4 x 21 x 32) marked "ARC CHUTES."

(e) Isolate the arc chutes from the sides of the box

and each other by using 21 x 2 x 4 block (5510-00-

220-6194). Seal box.

Change 1

B-3-55