Pontiac Fiero 1988 Service Manual page 361

6B-12 ENGINE COOLING
H20009-6B
Figure 17 Submerging Side Tank
GENERAL CORE REPAIR
Preparation of the surface in the repair area can-
not be overemphasized. If the leak area surface is not
clean, none of the repair materials will stick to the
surface.
1. Position the core so the repair area is accessible.
2. Apply a wet cloth if you are working near the
plastic tanks or the joints between the core tubes
and header (Figure 16); or submerge the tank in
water (Figure 17).
3. Heat the repair area slightly with a small torch
or heat gun to be sure it is dry. Do not use a
blow torch.
4. Brush the area to be repaired with the small steel
brush that is supplied in the kit and blow dust
away from repair area. (See Figure 18)
5. Open the tube of primer, using the spurred cap
or a pin, and apply primer to the repair area
only. Use of the primer produces a stronger
repair. Do not heat the primer.
Figure 18 Cleaning Area With Steel Brush
C A U T I O N : T h e p r i m e r c o n t a i n s
t r i c h l © r e t h a n e
n
• It c o u l d b e h a r m f u l , o r f a t a l , if
s w a l l o w e d . If s w a l l o w e d , g e t
m e d i c a l a t t e n t i o n .
• U s e w i t h a d e q u a t e v e n t i l a t i o n .
© In c a s e of e y e c o n t a c t , f l u s h w i t h
p l e n t y of w a t e r a n d g e t m e d i c a l
a t t e n t i o n .
- In c a s e o f b o d y c o n t a c t , w a s h
t h o r o u g h l y w i t h s o a p a n d w a t e r .
• D o n o t m i x t h e p r i m e r w i t h w a t e r .
6. Scrub the repair area with a cotton swab until a
fresh swab stays clean. The clear, yellow-brown
coating does not have to be removed
(Figure 19).
Figure 19 Scrubbing Area with Primer
7. Heat the repair area with the heat gun or by
moving the torch in a circular pattern (Figure
20). Use a soft, small blue flame (like a gas
stove flame).
H20012-6B
Figure 20 Heating the Repair Area