Process
No.Process name Job contents
9 WeldingUsing a heater gun and PP welding rod, weld the beveled spot while melting the rod and dam-
aged area.
G5M0167
NOTE:
IMelt the sections indicated by hatched area.
IDo not melt welding rod until it flows out, in order to provide strength.
IAlways keep the heater gun 1 to 2 cm (0.4 to 0.8 in) away from the welding spot.
ILeave the welded spot unattended until it cools completely.
10 Sanding (II)Remove excess part of weld with a putty knife. If a drill or disc wheel is used instead of the
knife, operate it at a rate lower than 1,500 rpm and grind the excess part little by little. A higher
rpm will cause the PP substrate to melt from the heat.
G5M0168
Sand the welded spot smooth with #240 sand paper.
11 MaskingMask the black substrate section using masking tape.
Recommended masking tape: Nichiban No. 533 or equivalent
12Cleaning/
degreasingCompletely clean the entire coated area, using solvent similar to that used in Process No. 4.
13 Primer coatingApply a coat of primer to the repaired surface and its surrounding areas. Mask these areas, if
necessary.
Recommended primer: Mp/ 364 PP Primer
NOTE:
Be sure to apply one coat of primer at a spraying pressure of 245 to 343 kPa
(2.5 to 3.5 kg/cm
2, 36 to 50 psi) with a spray gun.
14 Leave unattended.Leave the repaired area unattended at 20ÉC (68ÉF) for 10 to 15 minutes until primer is half-dry.
NOTE:
If dirt or dust gets on the coated area, wipe it off with a cloth dampended with alcohol. (Do not
use thinner since the coated area tends to melt.)
15Primer surfacer
coatingApply a coat of primer surfacer to the repaired area two or three times at an interval of 3 to 5
minutes.
Recommended surfacer:
IUPS 300 Flex Primer
INo. 303 UPS 300 Exclusive hardener
INPS 725 Exclusive Reducer (thinner)
IMixing ratio:2:1(UPS 300: No. 303)
IViscosity: 12 Ð 14 sec/20ÉC (68ÉF)
ICoated film thickness: 40 Ð 50
16 Drying Allow the coated surface to dry for 60 minutes at 20ÉC (68ÉF) [or 30 minutes at 60ÉC (140ÉF)].
17 Sanding (III) Sand the coated surface and its surrounding areas using #400 sand paper and water.
18Cleaning/
degreasingSame as Process No. 12.
36
5-1[W6C0]SERVICE PROCEDURE
6. Repair Instructions for Colored PP Bumper
Process
No.Process name Job contents
19 Top coat (I)Solid color Metallic color
Use a ªblockº coating method.
IRecommended paint:
Suncryl (SC)
No. 307 Flex Hardener
SC Reducer (thinner)
IMixing ratio:3:1
Suncryl (SC) vs. No. 307 Flex Hardener
IViscosity: 11 Ð 13 sec/20ÉC (68ÉF)
ICoated film thickness: 40 Ð 50
ISpraying thickness: 245 Ð 343 kPa
(2.5 Ð 3.5 kg/cm
2, 36 Ð 50 psi)Use a ªblockº coating method.
IRecommended paint:
Suncryl (SC)
No. 307 Flex Hardener
SC Reducer (thinner)
IMixing ratio:3:1
Suncryl (SC) vs. No. 307 Flex Hardener
IViscosity: 11 Ð 13 sec/20ÉC (68ÉF)
ICoated film thickness: 20 Ð 30
ISpraying thickness: 245 Ð 343 kPa
(2.5 Ð 3.5 kg/cm2, 36 Ð 50 psi)
20 Leave unattended. Not required.Leave unattended at 20ÉC (68ÉF) for at least
10 minutes until the topcoated area is half-dry.
NOTE:
Be careful to keep dust or dirt from getting on
the affected area.
21 Top coat (II) Not required.Apply a clear coat three times at an interval of
3 to 5 minutes.
IRecommended paint:
SC710 Overlay Clear
No. 307 Flex Hardener
SC Reducer (thinner)
IMixing ratio:3:1
Suncryl (SC) vs. No. 307 Flex Hardener
IViscosity: 10 Ð 13 sec/20ÉC (68ÉF)
ICoated film thickness: 20 Ð 30
ISpraying pressure: 245 Ð 343 kPa
(2.5 Ð 3.5 kg/cm
2, 36 Ð 50 psi)
22 DryingAllow the coated surface to dry at 20ÉC (68ÉF) for two hours or 60ÉC (140ÉF) for 30 minutes.
NOTE:
Do not allow the temperature to exceed 80ÉC (176ÉF) since this will deform the PP substrate.
23 Inspection Carefully check the condition of the repaired area.
24 Masking removal Remove masking tape applied in Process No. 11 and 13.
25 Parts installation Install parts on bumper in reverse order of removal.
26Bumper installa-
tionInstall bumper.
37
[W6C0]5-1SERVICE PROCEDURE
6. Repair Instructions for Colored PP Bumper
