Repair Procedure
Important: Follow these guidelines when performing SMC repairs:
• | Clean scuff and solvent wipe all areas to be repaired. |
• | For added strength and durability, cove and reinforce on at least one
side of an SMC joint using a tacky mesh tape or equivalent. |
• | When partial panel replacement is performed, use two inch backing plates
made from SMC or E-coated steel, as a reinforcement for all butt joints. |
- Scuff area where repair is to be performed.
- Clean bond area with lint-free rag using a water-based cleaner.
- For cracks,cove and reinforce on at least one side of an SMC
joint using a tacky mesh tape or equivalent
- Sectioning joints require backing strips 50 mm (2 in)
wide, which can be cut from leftover pieces of SMC.
- Apply a thin coat of Goodwrench Structural Bonding Epoxy (part
number 12345726), or equivalent, to the entire join' area extending across
the cut lines and across the backer.
• | Use tacky mesh tape or an equivalent reinforcement matting. |
• | Allow to cure according to adhesive manufacturer's recommendations. |
- Prepare the repair areas as necessary to resemble OEM appearance.
Bonding Procedure
Important: Use the following procedure when bonding undamaged SMC to epoxy-coated
steel.
- Prime all bare metal areas with an anti-corrosion primer such
as DuPont Automotive Finishes 1305S/1306S; Sherwin-Williams PSE
4600/PSH 4605, Martin-Sensor 5120/5123; and, R-M DE15, Glasurit 801-1552
or equivalent.
• | Some paint manufacturers recommend a pre-primer when bonding to
epoxy. |
• | Always refer to paint manufacturer's recommendations. |
• | Do not combine paint systems. |
- Clean bond area with a lint-free rag using a water-based cleaner.
- Scuff both surfaces to be bonded using a scuff pad such as 3M's
Scotch-Brite "Red" scuff pad part number 07447 or equivalent.
- Ensure that the surface is clean and dry before applying adhesive.
• | Do not wipe surface with hand or rag. |
- Determine whether adhesive is applied to the vehicle or the replacement
panel. Refer to specific procedure of part being replaced.
- Apply a consistent adhesive bond to prepared surfaces.
- Mechanically retain panel in place to "wet out" adhesive
along entire bonding surface.
- Allow to cure according to adhesive manufacturer's recommendations.