KC-111

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Content creation stages KC-111
Volvo Chassis - Model VN - Crack At Corner Of
The Hood Air Intake; Repair Procedure
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Tools
Compact Pneumatic Rotary Tool
Pneumatic Sander
High Pressure Blow Nozzle
Pneumatic Spray Gun
Supplies
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West System® 105 Epoxy Resin
West System® 205 Fast Hardener
Fiberglass Cloth - Cut into 4"x4”
squares
Method Prerequisites – Procedure Steps
1. Crack Location – Detection
2. Surface Preparation – Composite digging-grooving
3. Door opening method – Access to B-Side Fender
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4. Fiber Glass Patch Preparation
5. Resin Preparation – Patch Impregnation
6. Repairing the back side of the crack damaged area
7. Repairing the A face-cosmetic of the crack damaged area
8. Drying – Polymerization (Leister blowing)
9. Sanding – P240 / P320 / P400 (Cosmetic Face)
10. Cleaning (Blowing – IPA Wiping)
11. Puttying of the cosmetic A face (Product Prep + Application of putty)
12. Sanding – P240 (if needed) P320 / P400 (Cosmetic A Face)
13. Cleaning PRTP Prep (Blowing – IPA Wiping - Deionization)
14. Primering – PRTP
15. Curring (oven sequence)
Crack Location (Air Intake Area)
1. Determine the location and path of the crack
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A. Use a sand paper to remove all surface coating from the a ected area
2. Prepare the surface for patching
Removed the damaged material and open up the cracks, use a medium
grit sandpaper to sand slightly into the surrounding area. This will give
you the ability to feather your repair into the undamaged surface. After
you’ve nished sanding the surface, wipe down the surface with acetone
one nal time to remove dust and anything else that may disrupt
adhesion.
Digging the SMC Surface and Grooving
Grooving shape (Taper/Cove
Groove)
Crack has to be in the center of the
crossed grooves created
Create a Taper/Cove groove, not
a V-grove
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Door opening method – Access to B-Side Fender
Cutting the Fender reinforcement on 3 Access to the B side Fender by
faces to create a visit window (4”x5”) the window – Access to proceed
to access to B side fender
to the repair on B side
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Fiber Glass Patch Preparation 4”x4”
GF Patch 4” X 4” type cannot be changed
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Resin Preparation – Patch Impregnation
Epoxy Resin + Hardener (1/5 ratio)
GF Patch 4”x4” Impregnation)
Repairing the back side of the crack damaged area
Impregnated Patch Setting up
Impregnated Patch Location
(2 Patches impregnated and
superposed)
(2 Patches impregnated and
superposed)
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Repairing the A Face-cosmetic of the crack damaged area
Impregnated Patch Setting Up
After 2 minutes apply a paper tape on the wet patch to avoid sags and get a
smooth surface
Drying - Polymerization
Leister (heat gun) need to be swept over the patch during 3 minutes (more if
not cured) and with respect of the right distance to the subtract and the
right Leister (heat gun) heating power
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Sanding of resin patch – P80 / P240 / P320 (Cosmetic Face)
Sanding Method
Type of sand paper
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