Pontiac Fiero 1988 Service Manual page 1293

2J-8
STATIONARY
GLASS
N O LIGHT FULL B R I L L I A N C E
P» B R O K E N GRID
G R O U N D B U S B A R
N O L I G H T -
B R O K E N G R I D -
FULL B R I L L I A N C E -
F E E D BUS BAR
G92285-10B-BG
Fig. 13-Test L a m p Bulb Brilliance with Broken Grid
Lines
Grid Line Repair
Tools Required:
• Part No. 1052858 (or equivalent) - Rear Window
Defogger Repair Kit
# Heat gun - capable of 2 6 0 ° C (500°F)
Remove or Disconnect
Battery feed - rear window defogger system
Inspect
Rear window defogger grid lines.
Mark grid line breaks on outside of glass
with a grease pencil.
Clean
L*
Grid line area to be repaired. Buff with steel wool
and wipe clean using cloth dampened with
alcohol. Buff and clean about 6 mm (1/4")
beyond each side of break in guide line.
• 4 -
Install or Connect (Figs. 14 and 15)
1. Grid line repair decal or two strips of tape
positioned above and below repair area.
m
Repair decal or tape
must
be used to
control width of repair area.
• If decal is used, be sure the die-cut metering
slot is the same width as the grid line.
2. Remove the clamp (separator) from the container
of grid repair material.
• Mix hardener and silver plastic thoroughly.
• If hardener has crystalized, immerse packet
in hot water until the hardener reliquifies.
3. At room temperature, apply grid repair material
to repair area using a small wood stick or spatula.
4. Carefully remove the decal or tape.
NOTICE:
The grid line repair material must be
cured with heat. To avoid heat damage to interior
trim, protect the trim near the repair area where
heat is to be applied.
Apply heat to repair area for one to two minutes.
• Hold heat gun nozzle 25 mm (1") from
surface.
• A minimum temperature of 1 4 9 ° C (300°F)
is required.
L»
Inspect
Grid line repair area. If repair appears discolored,
apply a coating of tincture of iodine to repair area
using a pipe cleaner or fine brush. Allow iodine
to dry for about 30 seconds and carefully wipe off
excess with lint free cloth.
6. Test rear defogger operation to verify grid line
repair.
NOTICE:
At least 24 hours are required for
complete curing of repair materials. The unit
should not be physically disturbed until after that
time.
REPAIR MATERIAL
T W O STRIPS OF TAPE
G92286-10B-BG
Fig. 14-Applying Repair Material to Broken Grid Line
REPAIR A R E A
( E X A G G E R A T E D FOR I L L U S T R A T I O N )
25mm j l " )
B E T W E E N REPAIfi
A N D N O Z Z L E
G92274-10B-BG
Fig. 15-Applying Heat to Grid Line Repair