Pontiac Fiero 1988 Service Manual page 1286

STATIONARY GLASS 2J-1
SECTION 2J
STATIONARY GLASS
CONTENTS
Removal of Minor Scratches and
Abrasions 2J-1
Windshield and Back Glass Reveal
Moldings 2J-2
Stationary Glass 2J-2
Adhesive Service Kit 2J-2
Windshield 2J-2
REMOVAL OF MINOR SCRATCHES AND
ABRASIONS
Minor glass scratches and abrasions on the
outside surface of the glass can be removed or reduced
by using the methods described in this section.
There are two basic types of auto glass: laminated
safety plate (used in all windshields) and solid
tempered safety plate (used in side and back windows).
A major concern in glass polishing is the chance
of causing double vision in areas of occupant vision.
For this reason, removal of scratches or abrasions on
a windshield in the occupant's line of vision is more
limited than in other areas. Distortion is most apt to
result when trying to remove deep scratches. Scratch
removal must be performed with care.
Tools Required:
m Low speed (600-1300 RPM) rotary polisher (Skil
Model No. 570 or equivalent).
• Wool felt rotary-type polishing pad, about 75 mm
(3") in diameter and 50 mm (2") thick.
© Powdered cerium oxide (No. 14 Rareox or
equivalent) mixed with water as the abrasive
compound. Follow manufacturer's directions
when using any type of polishing compound.
• Wide mouth container to hold the polish.
NOTICE: This operation must not be used on the
inside of rear window glass which has heating
elements in the glass because the heating elements
will be damaged.
1. Mix two parts of polishing compound (No. 14
Rareox or equivalent) with one part water to
obtain a creamy mixture.
2. Stir mixture now and then to maintain a creamy
texture. Powdered cerium oxide is hard to mix
with water and tends to separate.
3. Draw a circle around scratches on opposite side
of glass with a wax marking pencil or crayon.
Draw other lines directly behind scratches to
serve as guides in locating scratch during
polishing (Fig. 1).
4. Use masking paper where needed to catch
drippings or spattered polish.
5. Dip felt pad attached to polisher into mixture
several times to insure that pad is well saturated.
Back Glass 2J-3
Quarter Window - 2PG97 Style 2J-4
Short Installation Method 2J-5
Extended Installation Method 2J-5
Waterleak Correction 2J-6
Rearview Mirror 2J-6
Rear Window Defogger 2J-7
1-Minor Glass Scratch Removal
Do not submerge or allow pad to stay in mixture
as it may loosen bond between pad and metal
plate.
6. Using moderate, but steady, pressure, hold pad
flat against scratched area of glass, and with a
feathering-out motion, polish affected area as
shown in Figure 1. Avoid heavy pressure. It does
not speed up operation and may cause
overheating of glass.
7. Cover enough area around scratch with a
feathering-out motion to eliminate any chance of
a bull's-eye.
Do not hold tool in one spot or operate tool on
the glass any longer than 30 to 45 seconds at a
time. If glass becomes hot to touch, let it air cool
before proceeding further. Cooling with cold
water may crack heated glass.