Suburban 3/4 Ton 4WD V8-305 5.0L (1986)
Wheels: All Technical Service Bulletins
Aluminum Wheels - Clear Coating Procedure Revised
Number:
REISSUE 86-131
Section:
3E
Date:
SEPT., 1986
Subject:
CLEAR COATING OF ALUMINUM WHEELS
Model and Year: ALL MODELS WITH ALUMINUM WHEELS
TO:
ALL CHEVROLET DEALERS
This bulletin supercedes and cancels Chevrolet Dealer Service Bulletin 86-131 dated August, 1986 (Section 3E) of which all copies
should be destroyed. This reissue of 86-131 contains a caution statement pertaining to the use of adequate respiratory protection
during the recoating procedure.
The purpose of this Service Bulletin is to assist dealerships in repairing the discoloration or surface degradation that has been
experienced on certain style cast aluminum wheels.
SERVICE REPAIR PROCEDURE:
I.
WHEEL REMOVAL
Remove wheel and tire assembly from car. It is not necessary to remove the tire from the wheel to perform the repair procedures.
If for any reason the tire is removed, its position to the wheel must be marked using the valve stem as an index. When
remounting, the tire should be returned to its original position on the wheel. Mark location of outboard weights and remove.
Mark wheel and tire for position on car.
Wash wheel inside and out with water base all purpose cleaner. Remove grease, oil with solvent cleaner.
II. ACCENT COLOR PREPARATION
A.
Sand over painted areas that will not require recoloring with 400 grit (wet or dry) to promote adhesion of clear coat. III.
SURFACE PREPARATION
A.
Surface damage
1.
Mount wheel on brake lathe and spin slowly.
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 imperfections.
1.
Sand with 80 Grit *
2.
Sand with 150 Grit
3.
Sand with 240 Grit
*
(Never use abrasive coarser than 80 grit)
B.
Slight clear coat damage on unpainted wheels.
1.
Apply chemical stripper ------allow stripper to penetrate coating.
*
Special Note - Use small 1/4" detail brush dipped in stripper to apply material around perimeter and spoke-like areas.
2.
Remove stripper--follow manufacturers recommendations.
3.
Sand wheel with 240 grit while rotating wheel on a slow spinning brake lathe or by mounting on vehicle and spinning by hand.
This step is to restore the machined appearance and to promote adhesion.
WARNING:
DO NOT USE VEHICLE POWER TO ROTATE WHEEL WHILE SANDING TO AVOID SERIOUS PERSONAL INJURY.
IV. RECOATING PROCEDURE
A.
Clean surface of contaminants by washing with soap and water.
