Welding And Weld Bonding - Chrysler Pacifica 2017 Repair Manual

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WELDING AND WELD BONDING

Safety Notice
CAUTION: All Service and rebuilding instructions contained herein are applicable to, and for the
convenience of, the automotive repair industry only
The service procedures recommended and described in this publication were developed for professional service
personnel, and are effective methods for performing vehicle repair.
It is important to note this publication contains various Cautions and Warnings. These should be read carefully in
order to minimize risk of personal injury or the possibility that improper service may damage the vehicle or render
it unsafe. FCA US LLC cannot possibly know, evaluate and advise the service trade of all conceivable ways in
which service may be performed, or the possible hazards of each. Consequently, FCA US LLC has not undertaken
any broad service review. Accordingly, anyone that uses a service procedure or tool that is not recommended in this
publication must be certain that neither personal safety, nor vehicle safety will be jeopardized by the service
methods they select.
Safety Precautions
WARNING:
• When Welding and/or working with Adhesives always wear safety goggles and gloves to prevent
contact with chemicals and to prevent weld spatter, sparks, and sharp metal from causing bodily
injury.
• Wear an approved respirator while welding and during the application of adhesives to prevent
inhalation of harmful vapors.
• Always remove NVH (Noise Vibration and Harshness) foam from welding repair area, as material
is flammable.
WARNING: Failure to follow these instructions may result in possible serious or fatal injury
Welding
• Comply with all federal, state and local regulations to avoid any injuries due to shock, fires, fumes, sparks and
liquids.
• All flammable materials or liquid should be stored in tightly sealed and labeled containers, and used only in
well ventilated areas.
• No spark producing equipment should be permitted in any area where flammable materials are being handled
or stored.
Adhesives:
• Safety Data Sheets (SDS) must be available and understood before adhesives are handled.
• All personnel should be instructed on the proper procedures to prevent skin contact with solvents, curing
agents, and uncured base adhesives, which could cause allergic reactions or sensitization.
Introduction
The purpose of this document is to clearly explain the welding options available to the collision repair technician and
how to determine that welding repairs are made properly. The primary types of welding covered in this section are
Squeeze Type Resistant Spot Welding (STRSW), Gas Metal Arc Welding (GMAW), Metal Active Gas (MAG) Brazing
and Weld Bonding (a combination of STRSW and structural adhesive). Proper training and weld testing are required
to ensure that a safe, high quality, vehicle repair is made.
Key Points of a Welding Repair
Requirements of a Welding Repair
Types of Welding (STRSW, GMAW and Weld Bonding)
Weld Processes (STRSW, GMAW and Weld Bonding)
Minimum Weld Nugget Requirement Chart
INDEX
Panel Removal
Modified Lap Joint
31 - Collision Information
REFERENCE
Panel Removal
Key Points of a Welding Repair
Requirements of a Welding Repair
Modified Lap Joint
Types of Welding
Weld Processes
Minimum Weld Nugget Chart
31 - 27