Nissan Pathfinder. Manual - part 269

REPAIRING HIGH STRENGTH STEEL

BRM-9

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• When straightening body panels, use caution in pulling any

HSS panel. Because HSS is very strong, pulling may cause

deformation in adjacent portions of the body. In this case,

increase the number of measuring points and carefully pull the

HSS panel.

• When cutting HSS panels, avoid gas (torch) cutting if possible.

Instead, use a saw to avoid weakening surrounding areas due

to heat. If gas (torch) cutting is unavoidable, allow a minimum

margin of 50 mm (1.97 in).

• When welding HSS panels, use spot welding whenever possi-

ble in order to minimize weakening surrounding areas due to

heat.

If spot welding is impossible, use MIG. welding. Do not use

gas (torch) for welding because it is inferior in welding

strength.

• The spot weld on HSS panels is harder than that of an ordi-

nary steel panel.

Therefore, when cutting spot welds on a HSS panel, use a low

speed high torque drill (1,000 to 1,200 rpm) to increase drill bit

durability and facilitate the operation.

PIIA0116E

PIIA0117E

JSKIA0082GB

PIIA0145E

BRM-10

< PRECAUTION >

REPAIRING HIGH STRENGTH STEEL

2. Precautions in spot welding HSS

This work should be performed under standard working condi-

tions. Always note the following when spot welding HSS:

• The electrode tip diameter must be sized properly according to

the metal thickness.

• The panel surfaces must fit flush to each other, leaving no

gaps.

• Follow the specifications for the proper welding pitch.

Unit: mm (in)

Handling of Ultra High Strength Steel Plate Parts

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PROHIBITION OF CUT AND CONNECTION

Do not cut and join the lower lock pillar reinforcement (center pillar reinforcement inside frame parts) because

its material is high strength steel plate (ultra high strength steel plate). 

The center pillar reinforcement must be replaced if this part is damaged. 

PIIA0146E

PIIA0147E

Thickness (T)

Minimum pitch (L)

0.6 (0.024)
0.8 (0.031)
1.0 (0.039)
1.2 (0.047)
1.6 (0.063)
1.8 (0.071)

10 (0.39) or over
12 (0.47) or over
18 (0.71) or over
20 (0.79) or over
27 (1.06) or over
31 (1.22) or over

JSKIA0781ZZ

REPAIRING MATERIAL

BRM-11

< PREPARATION >

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PREPARATION

REPAIRING MATERIAL

Foam Repair

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During factory body assembly, foam insulators are installed in certain body panels and locations around the

vehicle. Use the following procedure(s) to replace any factory-installed foam insulators.

URETHANE FOAM APPLICATIONS

Use commercially available urethane foam for sealant (foam material) repair of material used on vehicle.

Read instructions on product for fill procedures.

Example of foaming agent filling operation procedure:

1. Fill procedures after installation of service part.
a. Eliminate foam material remaining on vehicle side.
b. Clean area after eliminating form insulator and foam material.
c. Install service part.
d. Insert nozzle into hole near fill area and fill foam material or fill enough to close gap with the service part.

2. Fill procedures before installation of service part:
a. Eliminate foam material remaining on vehicle side.
b. Clean area after eliminating foam insulator and foam material.
c. Fill with enough foam material on the wheelhouse outer side to close the gap with the service part while

avoiding the flange area.

d. Install service part.

NOTE:

Refer to the label on the urethane foam container for information

on working times.

<Urethane foam for foaming agent>

3M™ Automix™ Flexible Foam 08463 or equiva-
lent

1. Urethane foam

A. Nozzle insert hole

Front

1.

Urethane foam

A.

Fill while avoiding flange area

   Front

JSKIA0129GB

JSKIA0130GB

BRM-12

< PREPARATION >

BODY COMPONENT PARTS

BODY COMPONENT PARTS

Underbody Component Parts

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FLOOR AND UNDERBODY

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