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Another best practice is selecting the right
metals and materials to use, both when purchasing new equipment and when using replacement
parts. Consider the surroundings that each
component will be subject to since all types of
materials corrode at different rates and accelerate faster in different environments. Ideally, it
is best to select such metals and material when
first specifying the vehicle.
26 Fleet Maintenance | December 2019
"OEMs are doing a much better job
at corrosion protection, but most don't
build [the] base vehicle assuming every
vehicle will operate in the most extreme
conditions," says NationaLease's Puff.
"Therefore, a fleet should consider alternative components and treatments."
Cost becomes a main factor. Less corrosive metals typically cost more upfront
but can significantly
reduce the vehicle's
long-term life cycle
costs - not only maintenance and appearance
costs but also the resale
value, Puff adds. Not to
mention it's important
to consider the environment and weather
that the truck and/or
trailer will be operating in to ensure value
in the long run.
Puff advises stainless steel, aluminum,
brass, copper, and
bronze are metals that
corrode at a slower rate.
These metals may be
used in place of some traditional iron or steel applications,
and in such cases may be more
An additional option for
fleets when specifying and
purchasing a trailer is galvanization. Hot-dip galvanizing
is a process in which steel is
dipped into molten zinc to form
a coating, resulting in a barrier to protect against corrosion.
It doesn't block out corrosion
completely or indefinitely, but
it does slow it down.
"It's becoming more prevalent now in the U.S.," says
Darry Stuart, president and
CEO of DWS Fleet Management
Services, an independent transportation and fleet management business. "What really
started [the rise in galvanizing] is the residual value of
the trailers going down to the
point where one couldn't justify
getting rid of a trailer ... nobody
wants to buy a trailer that is
really corroded underneath."
Areas on the trailer common
for hot-dip galvanizing include
the rear header, cross members,
upper couplers, and the suspension. Although the process has
been proven to extend the life
of trailers, the decision comes
down to cost.
"It depends on the company
and how long they plan to keep
their trailers," Stuart says. "It
can be a hard sell, especially for
» Dry rot is a common form of corrosion
on non-ferrous materials as seen
in this torque rod bushing.
Photo courtesy of Atro Engineered Systems, Inc.
fleets who purchase many, or even hundreds, of
trailers at a time."
When it comes to preventing rust jacking,
applying a protective coating to the brake table
will mitigate the effects of the corrosion buildup.
"Using quality reline programs and parts such
as OE is also beneficial," states Atro's Herrington.
Rust jacking is not as common as it once was.
This is because brake OEMs have developed
processes and coatings to help reduce this to a
degree, Herrington notes.
Lastly, a best practice for electrical systems is
to keep the inputs clean at all times. Every time a
repair is done or wires are unhooked and hooked
back up again, moisture could be introduced to
the system. Properly sealing the system each
and every time prevents water, debris, and salt
(particularly in the winter months) from entering
the system. Applying a dielectric lubricant or an
inhibitor is another good option to consider.
"Most corrosion [in electrical systems] happens
because people touch the system and they take
a component apart and they don't put it back
together properly, or they put a prick into a wire,
which allows corrosion to come into the wire,"
Aim NationaLease's Disantis says.
Regardless of how fleets decide to prevent
and control corrosion, the sooner precautions
are taken the better. Corrosion can be slowed
down, but it can't be fixed when it's already there.
Time is of the essence.
"For every action, there is a comparable or
greater reaction," says Herrington. "Corrosion
is certainly true of that."
For related content, visit:
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
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