TM-9-6920-430-14

COOLANT RECHARGING UNIT, TRAINING GUIDED MISSILE SYSTEM M80 AND CHARGER, BATTERY PP-7309/T

TECHNICAL MANUAL; OPERATOR’S AND ORGANIZATIONAL DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL

AUGUST 1980

TM-9-6920-430-14 - Page 144 of 180

TM 9-6920-430-14

3-22. PRESSURE SWITCH REPLACEMENT (Figure 3-8)

a.

Remove housing enclosure in accordance with para. 3-18 steps

a

through

c

page 3-76).

b.

Remove cover plate (4) from pressure switch assembly (3) and remove wire lugs from

pressure switch terminals.

c.

Remove connector (6) from conduit box (5) by rotating counterclockwise.

d.

Using a 9/16-inch wrench, loosen gas line coupling (2) until free from T connector (1).

e.

Lift safety switch upward to remove.

f.

Install replacement pressure switch by aligning the switch assembly (3) inlet line with T

connector coupling (2) and secure with a 9/16-wrench.

g.

Secure connector (6) to conduit box (5) by rotating clockwise.

h.

Connect wire lugs to pressure switch terminals and attach cover plate (4).

i.

Purge system as described in para. 3-18h-l through 10 (page 3-76).

j.

Adjust switch in accordance with para. 3-8a step 33 (page 3-39).

k.

Replace housing enclosure in accordance with para. 3-18h step 13 (page 3-78).

3-82

Figure

3-8.

Pressure Switch Replacement

Change 1