Fleet Maintenance - 22

"Due to their location on the vehicle, wheel-end
components are positioned in one of the most
corrosive environments on the vehicle," says Jim
Rosema, director of wheel-end products, Stemco.
Stemco is a manufacturer of commercial vehicle
wheel end, braking, and suspension components.
"If corrosion, due to improper care or maintenance, makes its way into the wheel end, this
can cause premature failure of these safetycritical components."
"Fleets should want to look into preventing
or controlling corrosion," adds Emily Hardsock,
inbound marketing specialist, IMI. IMI provides
solutions to address tire maintenance and wheel
safety for the commercial trucking industry.
"If fleets are not utilizing measures to protect
against corrosion, they will see [a] premature
[end] to their wheels and tires. This will cause
them to need replacement sooner. In turn,
this can lead to downtime, loss of money, and
decreased safety at the wheel end."
When corrosion occurs between the brake
shoe and lining, it is known as rust jacking.
Eventually, the buildup can cause cracks in the
brake lining, weakening the truck's ability to
brake safely. Factors such as de-icing chemicals,
moisture penetration (due to improperly matched
components), and an extensive amount of braking can all lead to rust jacking.
Corrosion doesn't just encroach on ferrous
metals, like steel or iron. It also affects other
materials such as non-ferrous metals and
composite or reinforced rubber materials. In
the hot zone, there are two types of non-ferrous
corrosion that can typically occur: wet corrosion,
or soakage, and dry corrosion, or dry rot.
"Either the product is sitting in oils, water, or
liquids for lengthy periods of time; or [the product is] sitting in the sun being affected by UV
rays," explains Brian Herrington, territory sales
manager at Atro Engineered Systems, Inc. Atro
Engineered Systems, Inc. engineers polyurethane
parts for heavy trucks and trailers.
The electrical system is another area of concern.
"When people hear corrosion, they think of
rusty frames and wheels, but electrical is also
a big deal," says Joe Puff, vice president of truck
technology and maintenance, NationaLease.
NationaLease is a full-service truck leasing
organization in North America that provides
fleet management services for private fleets and
transportation service providers.
The battery, battery cables, and the 7-way trailer connector are electrical components highly
susceptible to corrosion, Puff notes. The battery
and battery cables are at higher risk due to their
proximity and exposure to battery acid. The 7-way
trailer connector is more often exposed to moisture because of the frequent plugging and unplugging during trailer coupling and uncoupling.
Ultimately, any vehicle wiring connection
where water may enter is susceptible to corrosion.
Examples include anti-lock brake systems (ABS),
sensors, telematics devices, safety systems, wiring
harnesses, lighting harnesses, and more, which can
be impaired by just a small amount of corrosion.
Not to mention, if one component fails due to a
wiring malfunction it can cripple the whole system.
"Everything communicates electronically nowadays, and we have up to ten modules

22 Fleet Maintenance | December 2019

Choose the right solution for
corrosion prevention
Product options to prolong life of a vehicle and its components.
As corrosion continues to affect fleets, solutions to slow down
the deterioration and offer protection to the vehicle and its
components continue to advance. When determining the right
course of action, fleets should not only review all options available, but also take into account the environment in which the
fleet operates to ensure their best value in the long run.

» Stemco's Defender Hub
Cap is corrosion-resistant,
protecting against water
and contamination.
» Accuride aluminum wheels
are lighter in weight and are
more resistant to corrosion
than steel wheels.
Photo courtesy of Accuride

Accuride offers a line of aluminum wheels engineered
for lighter weight and more
resistance to corrosion. The
aluminum wheels are designed
to improve fuel economy,
reduce tire wear, attain heat
dissipation, and meet greenhouse gas standards. The
aluminum line includes AccuLite, Accu-Shield, Accu-Flange,
and DupleX-One. Accuride
also offers Steel Armor and
ProFinish. Steel Armor is a
powder coating corrosion
protectant for steel wheels that
involves a three-phase process.
ProFinish is a refinishing option
for steel wheels that combines
an epoxy e-coat and powder
coat to contain corrosion.
Stemco's Defender Hub Cap
is built to endure harsh road
conditions and is corrosion
resistant. The Defender Hub

Photo courtesy of Stemco

Cap provides protection against
water and contamination and
offers longer wheel-end life.
The Defender Hub Cap has
been tested to ensure that
the chemicals and ultraviolet
light it may encounter will not
affect its integrity, says Jim
Rosema, director of wheelend products, Stemco.

» IMI's MILCURE is a threestep steel wheel refinishing
system designed to prolong
the life of wheels and
protect against corrosion.
Photo courtesy of IMI

IMI's MILCURE is a complete
steel wheel refinishing system
that is a combination of equip-

on a vehicle," says Chris Disantis, director of
purchasing and training, Aim NationaLease. Aim
NationaLease is a full-service truck and trailer
leasing company and member of NationaLease.
"If those modules are not communicating, the
truck will no longer run."
High-power items, such as the battery and liftgate, are more prone to corrosion, Disantis adds.
The battery is out in the open and tough to cover
completely. If it is not properly maintained, corrosion will start and spread quickly.

ment and consumables, such
as shot blast media and powder
coatings, specifically for steel
wheels. MILCURE is a three-step
inspection and quality process
designed to meet industry standards set by the Technology
& Maintenance Council (TMC).
The system extends the life of
wheels by thoroughly cleaning, coating, and defending
wheels from corrosion without
requiring harsh solvents.
PPG offers a wide range of
epoxy and urethane undercoats
as well as urethane topcoats
that contain corrosion protection properties. PPG also has
anti-chip coatings designed
to be applied to underbody
areas of the vehicle to help
prevent chipping of the painted surface, and heavy duty
polyurea coatings designed
to be applied to areas where
excessive wear is common.
Krown offers two specific
products that directly address
corrosion related to de-icing
liquids, road salt, and moisture: Salt Eliminator and
KL72 Corrosion Inhibitor.
Salt Eliminator removes road
salt and de-icing chemicals
on the vehicle's exterior and
interior. It is sprayed on with
a pressure wash system or
low-pressure system and will
break the bond between chlorides on metal and non-metal
(rubber and plastic) surfaces
and rinse them away. The
KL72 Corrosion Inhibitor is
designed to penetrate and
displace moisture and to leave
behind a light, active, oily film
that will continue to displace
moisture over the next year.

Best practices for
preventing corrosion
Corrosion is going to happen; it's just a matter of
time. It is up to fleets to decide their course of
action on how best to prolong the life of the truck
or trailer and its components as long as possible.
One option is to adopt a corrosion prevention
program. This program can include items such
as winterizing the vehicle by applying protective coatings or inhibitors onto the body and


Fleet Maintenance

Table of Contents for the Digital Edition of Fleet Maintenance

Uptime: Top Industry Trends in 2020 and Beyond
How Active Safety Systems Pave the Way to Vehicle Autonomy
Vehicles: Steps to Understand and Prevent Corrosion
In the Bay: Remote Vehicle Management Enters a New Phase
Shop Operations: How to Prevent, Contain, and Clean Up Shop Spills
Management: A Guide to World-Class Maintenance
Training: What is a Bistable Relay?
Reman, Rebuild, Replace: What's the Difference Between a Supplier and a Supply Partner?
Diagnostics: Four Steps of an Effective Maintenance Program
Fleet Parts & Components
Tools & Equipment
Guest Editorial: Trends in Asset Telematics
Fleet Maintenance - 1
Fleet Maintenance - 2
Fleet Maintenance - 3
Fleet Maintenance - 4
Fleet Maintenance - 5
Fleet Maintenance - 6
Fleet Maintenance - 7
Fleet Maintenance - Uptime: Top Industry Trends in 2020 and Beyond
Fleet Maintenance - 9
Fleet Maintenance - How Active Safety Systems Pave the Way to Vehicle Autonomy
Fleet Maintenance - 11
Fleet Maintenance - 12
Fleet Maintenance - 13
Fleet Maintenance - 14
Fleet Maintenance - 15
Fleet Maintenance - 16
Fleet Maintenance - 17
Fleet Maintenance - 18
Fleet Maintenance - 19
Fleet Maintenance - Vehicles: Steps to Understand and Prevent Corrosion
Fleet Maintenance - 21
Fleet Maintenance - 22
Fleet Maintenance - 23
Fleet Maintenance - 24
Fleet Maintenance - 25
Fleet Maintenance - 26
Fleet Maintenance - 27
Fleet Maintenance - 28
Fleet Maintenance - 29
Fleet Maintenance - In the Bay: Remote Vehicle Management Enters a New Phase
Fleet Maintenance - 31
Fleet Maintenance - 32
Fleet Maintenance - 33
Fleet Maintenance - 34
Fleet Maintenance - 35
Fleet Maintenance - Shop Operations: How to Prevent, Contain, and Clean Up Shop Spills
Fleet Maintenance - 37
Fleet Maintenance - 38
Fleet Maintenance - 39
Fleet Maintenance - 40
Fleet Maintenance - 41
Fleet Maintenance - Management: A Guide to World-Class Maintenance
Fleet Maintenance - 43
Fleet Maintenance - Training: What is a Bistable Relay?
Fleet Maintenance - 45
Fleet Maintenance - Reman, Rebuild, Replace: What's the Difference Between a Supplier and a Supply Partner?
Fleet Maintenance - 47
Fleet Maintenance - Diagnostics: Four Steps of an Effective Maintenance Program
Fleet Maintenance - 49
Fleet Maintenance - 50
Fleet Maintenance - 51
Fleet Maintenance - Fleet Parts & Components
Fleet Maintenance - 53
Fleet Maintenance - 54
Fleet Maintenance - 55
Fleet Maintenance - 56
Fleet Maintenance - 57
Fleet Maintenance - 58
Fleet Maintenance - Tools & Equipment
Fleet Maintenance - 60
Fleet Maintenance - 61
Fleet Maintenance - 62
Fleet Maintenance - Classifieds
Fleet Maintenance - 64
Fleet Maintenance - 65
Fleet Maintenance - Guest Editorial: Trends in Asset Telematics
Fleet Maintenance - 67
Fleet Maintenance - 68
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