Bumper - Repair Polyurethane & Polypropylene Fascia: Overview

91nissan02

Classification: BF91-011
Section: Body & Frame
Reference: TECHNICAL BULLETIN NTB91-037


Models: All Models
Date: April 11, 1991


POLYURETHANE & POLYPROPYLENE
BUMPER FASCIA REPAIR


APPLIED MODELS: 1988-90 Pulsar XE (KN13) 1990-91 30OZX (Z32)
1988-89 Pulsar SE (KN13) 1989-91 240SX (S13)
1988-90 Sentra Sdn. (B12) 1990 Axxess (M11)
1988-90 Sentra Cpe (B12) 1988-89 Stanza (T12)
1991 Sentra Sdn (B13) 1990-91 Stanza (U12)
1991 Sentra NX (KB13) 1988-90 Van (C22)
1989-91 Maxima (J30)


SERVICE INFORMATION

This bulletin provides detailed instructions to repair polyurethane and polypropylene bumper fascias. A polyurethane bumper can be distinguished from a polypropylene bumper by using the following test:

cut a small piece of material from the end of the bumper fascia and hold it over the flame of a match or lighter until it ignites.

Polyurethane will burn with black smoke and have an odor.

Polypropylene will burn with little smoke and will not have an odor.


Alternate Test:

Sand an area near the damage with a 36 grit disc.

If the material sands cleanly, the bumper is polyurethane.

If the material melts or smears when sanded, it is polypropylene.


BUMPER MATERIAL INFORMATION


MODEL FRONT BUMPER REAR BUMPER

1988-90 Pulsar XE Polypropylene Polypropylene

1988-89 Pulsar SE Polyurethane Polypropylene

1988-90 Sentra Sdn. Polypropylene Polypropylene

1988-90 Sentra Cpe. Polyurethane Polypropylene

1988-91 Stanza Polypropylene Polypropylene

1989-91 240SX Polyurethane Polyurethane

1990-91 300ZX Polyurethane Polyurethane

1988-91 Maxima Polyurethane Polyurethane

1990 Axxess Polyurethane Polyurethane

1988-91 Van Polyurethane Polyurethane


NOTE: OEM replacement bumpers are the same material as original.

PARTS INFORMATION

The following 3M products (or their equivalent) should be obtained from your local body shop supply.


3M PART
PART DESCRIPTION NUMBER APPLICATION

Flexible Parts Repair Manual 05900 Both types

Flexible Parts Putty 05903 Polyurethane bumpers

Flexible Parts Coating 05905 Both types

Polyolefin Adhesion Promoter 05907 Polypropylene bumpers

solvent (general purpose) -- To remove silicones,
tar or grease.

Fiberglass cloth -- To repair holes up to
3" in diameter.

Sanding discs for rotary -- 36 grit
sander 180 grit
240 grit 320 grit