Page 1246 - Foton Workshop Manual - Auman EST-M

BW - 8 Body - Body assembly

a. Clean the position to be repaired.
● Before repairing, clean both sides of the plastic parts with a high-pressure water cleaner and then dry them.
● Clean the surface to be repaired with a plastic cleaner.
b. Pretreat the scratches:
● Grind the scratches or cracks with a track grinding machine and P80 ~ P120 sandpaper thoroughly.
● Carry out the fine grinding with a track grinding machine and P120 sandpaper.

● Thoroughly clean the surface to be repaired with a plastic cleaner or paper towel.
● Apply the plastic primer evenly on the repair surface.
c. Pretreat the cracks:
● Grind the front side of the cracks with an angle grinding machine or belt grinding machine, to the grindging
surface width of 40 ~ 60mm.
● Carry out the grinding again with a track grinding machine (P120 sandpaper).
● Use a 3mm drilling bit at the end of crack to prevent the extension of crack
● Carry out the grinding operation along the inside of the cracks.
● Clean the position to be repaired with a plastic cleaner or paper towel.
● Apply the plastic primer on the position to be repaired.
d. Bond the scratches:
● After cleaning and applying the primer, fill the sratches with adhesive.
● Spread and level the adhesive with a flexible plastic feeler.
● Dry with an infrared heater or a dryer
e. Bond the cracks:
In case of a large area of cracks or damage, reinforce the position to be repaired to improve the torsional
strength. For this purpose, a appropriate reinforcing material (such as, metal strip, reinforcing fiber) can be
used onto the back of the part.
● Cover the front side of the cracks with PE sheet or tape.
● Fill the weld with a plastic adhesive from the inside.
● Fill the weld with a wider reinforcing fiber together with the adhesive at the same time,.
● Reinforce the end of the cracks by a metal strip attached onto the plastic part.
● Grind the top surface of the reinforcement material to the height of the entire surface to be repaired.
● Dry with an infrared heater or a dryer
● PE sheet can prevent the adhesive spilling from the front side of the cracks.
● Remove the PE sheet after the adhesive is dried.
● Apply the adhesive onto the front of the position to be repaired.
● Dry the adhesive with an infrared heater or dryer.
● Cool the adhesive to the room temperature to prevent the adhesive from peeling off and the sandpaper from
overheating during sanding process.
f. Grinding.
● Grind the protrution position of the adhesive with a track grinding machine (P120 ~ P220 sandpaper).
● Manually grind the depression and bending areas.
● Use a polishing pad to rub the paint.

● Thoroughly clean the plastic parts.
● Thoroughly dry it and apply the plastic primer.

BW-008