Q u e s t i o n s ? C o n t a c t D e v c o n T e c h n i c a l S e r v i c e s : 8 0 0 - 9 3 3 - 8 2 6 6 w w w . d e v c o n . c o m M e t a l S u r f a c e R e p a i r U s e D e v c o n ® m e t a l f i l l e d e p o x i e s f o r g e n e r a l r e p a i r s t o c r a c k s i n p u m p c a s i n g s , v a l v e b o d i e s , t a n k s , b e a r i n g h o u s i n g s , a n d g e a r b o x e s . Follow the guidelines previously described for SURFACE PREPARATION. NOTE: Use Titanium Putty #10760 for all metal surface repairs. If short "downtime" is necessary, use Plastic Steel ® 5 Minute ® (SF) #10240 , or FasMetal™ #10780 to get equipment back into service in 3 hours. 1. Drill holes, 1/8" larger than crack at each end, or multiple holes if crack is over 5 inches long, to relieve further cracking (Figure 1) . 2. Use drill or edge grinder with an abrasive to make a "V" groove along crack to increase surface area for application of epoxy. Degrease the grooved area to remove any contamination (Figure 2) . 3. With putty knife or spatula force the epoxy into the crack and completely fill the "V" groove. Overlap approximately 1" on each side of the crack to ensure adhesion (Figure 3) . 4. Embed a piece of reinforcing mesh (fiberglass, nylon or wire screening) onto top of epoxy pressing in until epoxy oozes through mesh (Figure 4) . 5. Apply another coat (1/16" - 1/4") over the mesh, smooth and "feather" out the edges for a good finish. Use a heat gun or heat lamp to speed up curing. (Figure 5). NOTE: Damaged parts due to metal fatigue or stress cracks should be replaced. You cannot repair metal where the integrity of the metals are in question. Figure 1 Figure 4 Figure 2 Figure 3 Figure 5 7.