4-121. BEACON WARNING LIGHT (CONT)
Remove bulb (7) from socket in base (6).
Remove three locknuts (8), bolts (9), light base (6), and gasket (10) from bracket (11). Discard locknuts.
Inspect wires and socket connectors for corrosion, frayed or broken wires, and looseness. If electrical connector
is defective, use electrical repair kit and replace as required. If wires are frayed or broken, replace light assembly.
Inspect bulb socket for corrosion or defects. Inspect internal components of light base for obvious damage or
evidence of overheating. If bulb socket is corroded, clean by wiping with a clean rag. If socket cannot be
cleaned, or is defective, or if internal components are defective, replace light assembly.
Inspect for burned out bulb. If defective, replace bulb.
Inspect for missing, cracked, or distorted lens and band clamp. If either is defective, replace.
Install gasket (10) and light base (6) onto bracket (11) and secure using three bolts (9) and locknuts (8). Ensure
electrical leads (1 and 2) are between light base (6) and gasket (10) and pointed toward rear of trailer.
Install bulb (7) into socket in base (6).
Install lens (5) and secure with band clamp (3).
Connect wires (1 and 2) on beacon warning light and, if necessary, secure cable with cable tie.
Reconnect intervehicular electrical cable and check beacon warning light for proper operation by activating clearance
4-538 Change 3