GMC 1976 ZEO 6083 Maintenance Manual page 628

21
cfl
c
m
w
[Broken, Cracked,
or Discolored Inside
Check for Impact
(Rock) Damage or
Improperly In-
stalled or Damaged
Terminals
Replace Sealed
Beam
Too Bright and/or
Burns Out Quickly
Check for 6 Volt
Unit Installed in
12 Volt System
Replace Sealed
Beam
FAILURE CONDITIONS
Does Not Light
or Intermittent
Check Wiring
Connections to
Terminals
Check Voltage
at Upper and
Lower Beam
Terminals
Check Ground
Connection of
Sealed Unit Con-
nector to Body
Filament Glows Dim
Check for Wrong
Sealed Beam
Replace Sealed
Beam
Will Not Aim
Properly
Check for Open
Check for Chipped
Ground Connection
or Broken Aiming
Pad on Lens
Check for Proper
Calibration and
Floor Compensation
of Mechanical
Aimers
Check Unit Re-
taining Components
Replace Sealed
I I
Replace Sealed
Beam Beam
A-1804