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 143 of 180

TM 9-6920-430-14

3-21. STARTER RELAY REPLACEMENT (Figure 3-7)

a.

Disconnect 115 volt ac power to GPU.

b.

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

a

through c.

c.

Remove starter relay cover assembly.

d.

Disconnect electrical connections at the relay terminals by loosening lug retaining screws

and removing lug. Be sure that you label wires as you remove them.

e.

Remove relay jumper cables for reinstallation on replacement relay. Note exact termination

of jumper cables so that they are reinstalled on identical terminals of replacement relay.

f.

Loosen relay assembly retaining screw at base of mounting plate and slide relay to the left.

Lift relay upward to remove from enclosure.

g.

Install replacement relay in enclosure inserting retaining screw through mounting slot and

slide relay to the right.

h.

Secure relay in place by tightening retaining screw.

i.

Connect wires to terminals designated by label.

j.

Connect jumper cables to terminals designated by label.

k.

Replace housing enclosure in accordance with para. 3-18h step 13.

Figure 3-7. GPU Starter Relay Replacement

Change 1

3-81