Pontiac Fiero 1988 Service Manual page 212

TIRES A I D WHEELS 3E-9
n o t s e a t e d . If 2 7 5 k P a ( 4 0 p s i )
p r e s s u r e w i l l n o t s e a t b e a d s , d e f l a t e ,
r e l u b r i c a t e t h e b e a d s a n d r e i n f l a t e .
O v e r i n f l a t i o n m a y c a u s e t h e b e a d t o
b r e a k a n d c a u s e s e r i o u s p e r s o n a l
I n j u r y .
7. Adjust tire pressure to meet specifications.
8. Balance tire and wheel assembly.
9. Install tire and wheel assembly.
ALUMINUM W H E E L REFINISHING
A protective clear or color coating is applied to
the surface of original equipment cast aluminum
wheels. A surface degradation condition can begin to
develop if frequent, repeated automatic car wash
cleaning abrades or wears off the factory applied
protective coating. This can happen at some automatic
car wash facilities using aggressive silicon carbide
tipped tire brushes to clean white walls and tires. Once
the protective coating is damaged, exposure to caustic
cleaners and/or road salt further causes surface
degradation. The following procedure details how to
strip, clean and recoat aluminum wheels that are
affected by these conditions.
Required Materials:
Amchem Alumi Prep # 3 3 - stock
#DX533 or equivalent - cleaning and
conditioning chemical for aluminum.
Amchem Alodine # 1001 - stock #DX50T
or equivalent - coating chemical for
aluminum.
Ditzler Delclear Acrylic Urethane Clear -
stock #DAU-75 or equivalent.
Ditzler Delthane Ultra-Urethane Additive
- stock DXR-80 or equivalent.
S e r v i c e Procedure:
1. Mark wheel and wheel stud for position on car.
2. Remove tire and wheel assembly from car.
3. Mark location of outboard weights and remove.
4. Wash wheel inside and out with water base all
purpose cleaner. Remove grease and oil with
solvent cleaner.
5. Mask off tire prior to painting.
6. Select and follow the correct procedure,
"Aluminum Damage on Wheel Surface" or
"Clear Coat Damage on Unpainted Wheels".
7. Replace wheel weights with nylon coated
weights.
8. Install tire and wheel assembly on car and tighten
wheel nuts to proper torque.
Accent Color Preparation
1. Sand over painted areas that will not require
recoloring with 400 grit (wet or dry) to promote
adhesion of clear coat.
Aluminum Damage on Wheel Surface
1. Mount tire and wheel on brake lathe and spin
slowly.
2. Sand wheel with backing block or pad by holding
abrasive flat to surface of wheel and moving
slowly back and forth from center to outer edge
to remove damage. Use the following sandpaper
grits in the order listed.
A. Sand with 80 grit
B. Sand with 150 grit
C. Sand with 240 grit
3. Continue with "Recoating Procedure."
Clear Coat Damage on Unpainted Wheels
1. Apply chemical stripper. Use small 1/4" detail
brush dipped in stripper to apply material around
perimeter and spoke-like areas.
2. Remove stripper following manufacturers
recommendations.
3. Sand wheel with 240 grit while rotating wheel on
a slow spinning brake lathe or by mounting on car
and spinning by hand. This will restore the
machined appearance and promote adhesion.
C A U T I O N : D o n o t u s e e n g i n e p o w e r t o
r o t a t e w h e e l w h i l e s a n d i n g t o a v o i d
s e r i o u s p e r s o n a l i n j u r y .
4. Continue with "Recoating Procedure."
Recoating Procedure
1. Clean surface of contaminants.
2. Soak wheel with Amchem # 3 3 or equivalent
from 1 to 3 minutes, then rinse with water and
blow dry.
3. Soak wheel with Amchem #1001 or equivalent
for 1 to 3 minutes, then rinse with water and blow
dry.
4. Finish with Ditzler Delclear Acrylic Urethane
and Ditzler Ultra-Urethane Additive or
equivalent using three coats.
1st Coat - Light mist coat, let flash
2nd Coat - Light, let flash
3rd Coat - Heavy double wet coat
C A U T I O N : T o a v o i d s e r i o u s p e r s o n a l
i n j u r y w h e n a p p l y i n g a n y t w o p a r t
c o m p o n e n t p a i n t s y s t e m , f o l l o w t h e
s p e c i f i c p r e c a u t i o n s p r o v i d e d b y t h e
p a i n t m a n u f a c t u r e r . F a i l u r e t o f o l l o w
t h e s e p r e c a u t i o n s m a y c a u s e l u n g
i r r i t a t i o n a n d a l l e r g i c r e s p i r a t o r y
r e a c t i o n .
5. Let dry for 24 hours - (or flash for 30 minutes,
force dry at 140° for 30 minutes, and allow to cool
for 30 minutes before mounting.
W H E E L NUT TORQUE
M12X1.5 140 N-m (100 lbs. ft.)