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Posted: Aug 2, 2013

Maximizing ERV Motor Oil Drain Intervals Using Fluid Analysis

By Christian P. Koop

The physical task of changing motor/engine oil has remained basically unchanged for more than a century. However, the oil, or lifeblood of your engine as I and others like to refer to it, sure has changed. Failure to change this modern marvel of petroleum and chemicals at the appropriate time will still render the same results today as it did more than a century ago. It will shorten the useful life of your engine, and if the wear and damage caused by failing to change the oil at the proper intervals requires the engine to be overhauled or replaced, it will be one of the most costly one-time expenditures to hit your maintenance budget.

With today's tight budgets, we need to ensure we change oil at the optimal time. Changing it too frequently, in the long run, can cost your operation significantly-both in wasted labor hours and in money spent needlessly on oil and filters. The key is to find the right time to change it. Think of it as the proverbial sweet spot. The best way to do this is by using fluid analysis. Given the complexities of today's engines, whether your fleet is large or small, analyzing your fleet's motor oil is the best practice-not only in finding that sweet spot but also in alerting you to prevent catastrophic engine damage in many cases.

In this article, I will talk briefly about the history of motor oil, some of the main additives in motor oil, what they do, and how some of the information fluid analysis reports will help to proactively protect and prolong the life of your emergency response vehicle's (ERV) most vital component-the engine-whether it is gasoline- or diesel-powered.

Motor Oil

Everyone knows that motor oil's main job is to lubricate moving parts. But, don't forget it also helps to cool, improve sealing, and clean the engine. Oil essentially has a long molecule, and we change it because it gets sheared (loses viscosity), dirty, thicker, and contaminated and its additive packages get used up. The chemical makeup and the improvements of motor oil have changed dramatically over the years.

Many years ago, motor oil was completely derived from crude oil. The problem was that during the combustion process and the normal use of those early engines, oil broke down quickly, viscosity decreased, sludge and varnish formed, and acids were created that attacked vital engine parts. One of the most important requirements discovered in the early years of the automobile for motor oil was the need for proper viscosity. The oil had to have the correct thickness or viscosity (measured by resistance to flow) to ensure metal parts, such as engine bearings, would not come in contact and cause damage.

The Society of American Engineers (SAE) was formed in 1905 and developed standards for motor oil viscosity ratings. The SAE, as most are aware and familiar with, continues to provide these standards. In 1919, the American Petroleum Institute (API) was established to set the minimum performance standards for motor oil that continue to evolve today. It currently licenses and certifies motor oil and appears on oil containers as a "starburst pattern" and the "service donut" symbol.

In the early 1930s, oil additives started to appear that greatly improve the performance of oil and eventually add more protection and prolong engine life. Some of these additives follow:

  • Typically detergents are made from magnesium sulfonate and are used to clean and prevent sludge from forming.
  • Corrosion inhibitors slow down the oxidation of metal inside the engine.
  • Amines and phenals are antioxidants that retard the degradation of the base oil caused by oxidation.
  • Metal deactivators are used to form a film on the metal parts to stop the metal from oxidizing the oil.
  • Viscosity modifiers help to maintain oil at the correct viscosity at higher engine temperatures. Read more
Posted: Aug 2, 2013

Military and Municipal Fire Services Share Equipment Designs

Alan M. Petrillo

Makers of fire apparatus and equipment are reporting more deals with various branches of United States military services, as well as other nongovernmental agencies-Army, Navy, Marine Corps, Air Force, Coast Guard, Forest Service, Bureau of Land Management, and others.

Very often, equipment is developed for the military, which then trickles down for use in municipal and industrial applications. And, the reverse also is true-the military purchases tried-and-true municipal firefighting apparatus and equipment because they meet its particular needs.

The Cobra EXM, along with other monitors in the Elkhart Brass EXM line, was developed as a result of work done with United States military services
(1) The Cobra EXM, along with other monitors in the Elkhart Brass
EXM line, was developed as a result of work done with United States
military services. (Photo courtesy of Elkhart Brass.)

Water Appliances

Rick Singer, vice president of North American sales for Akron Brass Company, says his company's dual-flow handline nozzle started its life as a design for the United States Navy, as did a portable monitor design that could be used for shipboard fires. Akron Brass works with all five branches of the United States military, as well as with the National Guard. "The original concept for the Mercury portable monitor was for the Navy," Singer points out, "where Navy personnel could deploy and leave an unmanned device to fight fires on a ship. Likewise, our dual-flow nozzle started as a military design for the Navy. It was later expanded, refined, and provided to the municipal fire market as the SaberJet nozzle."

The Akron SaberJet can put out a solid stream, fog pattern, or both at the same time, Singer notes. "In some cases, the products we provide to the military have been highly specialized to meet stringent and unique military requirements," Singer says. "There's often a need for design robustness that can withstand a saltwater environment or to take excessive shock or vibration."

Another firefighting solution embraced by the military that is finding its way into municipal departments is ultra-high-pressure (UHP) applications, Singer adds. "UHP designs are moving from United States Air Force applications, where a lot of UHP testing and work have been done, and into the municipal fire world and the wildland fire industry," he says.

On the other hand, Singer says, "We've seen solutions started on the civilian side that get taken up by the military, with remote control monitor solutions that have for a long time been embraced in industrial firefighting now being applied by various military branches."

Rod Carringer, chief marketing officer for Task Force Tips (TFT), says TFT also works with all United States military branches because fire suppression is part of their mission at nearly every level. "We've done a lot of work with the Navy, especially on submarines," Carringer says. "They ask us for certain design and performance standards, and often they are not too far from what we offer commercially to municipal and industrial customers."

Carringer says a lot of the TFT military business is in manual handheld nozzles, monitors, and foam-making equipment that is very similar to the kinds of equipment used by municipal fire departments. "A lot of military firefighting deals with base activities, so it is pretty much the same equipment and apparatus as you'd find in your local fire department," he says. "However, there are some specific hazards on bases that have to be dealt with, and those sometimes requ

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Posted: Aug 1, 2013

Fire Industry Today

By Spencer Dell,
Senior Marketing Communications Specialist,
Cummins Inc.

During the past ten years, the fire industry has seen the many changes in emissions regulations relative to on-highway diesel engines. New emissions regulations have brought on new engine technology including electronic fuel systems, exhaust gas recirculation (EGR), as well as aftertreatment technology including diesel particulate filters (DPFs) and selective catalytic reduction (SCR), which can be found on most of today's engines. These changes in regulations and the resulting new technology developments have raised some questions on how the exhaust aftertreatment systems will impact fire and emergency vehicle operation. This article will focus on the evolution of the aftertreatment technology used by engine manufacturers in the industry and address how these systems impact the operator.

Origins

The year 2007 brought the introduction of the DPF for most in the industry. Engine manufacturers used the DPF to help clean up the particulate matter-one of the emissions pollutants regulated by the United States Environmental Protection Agency (EPA) and more commonly referred to as soot. By using the DPF in place of the traditional muffler, the engine could operate more efficiently, allowing the aftertreatment system to handle the exhaust emissions control and lowering particulate matter. With the introduction of the DPF came a term known as "regeneration." Regeneration is the process of removing the excess soot (particulate matter) from the DPF by raising exhaust temperature. It often is performed passively while the engine is operating at a certain temperature, although some instances require the operator to manually perform a parked regeneration to clean the system. Standard in all fire and emergency vehicles with a DPF is a series of dash lamps helping to inform the driver when regeneration is required. As the DPF begins to fill with soot, these lamps will illuminate, notifying the operator that a regeneration needs to be performed. One key point to note is that in 2007, Cummins chose not to initiate a "derate," or performance penalty, for fire and emergency vehicles as the DPF filled with soot.

2010 Regulations

In 2010, new regulations brought the emissions levels, most notably oxides of nitrogen (NOx), down to near-zero levels as particulate matter levels were already at this level in 2007. Many engine manufacturers chose to use SCR, which uses diesel exhaust fluid (DEF) to help attain these new emission levels. DEF is an additional fluid stored on the vehicle in a specifically labeled tank that the driver needs to refill when needed, much like engine coolant and windshield wiper fluid.

Keeping an adequate DEF level ensures that the engine will operate appropriately and as designed. Just like in 2007 with the introduction of the DPF, drivers are notified of a low DEF level through a series of lamps on a vehicle's dash. Based on typical DEF usage in an emergency vehicle application, operators can expect to fill up their DEF tank roughly 10 times per year or about once every 5.5 weeks depending on the vehicle's use. Maintaining an adequate DEF level is a simple procedure, and Cummins recommends simply topping off the fluid when filling up the diesel fuel tank.

If the DEF level reaches a critically low point on Cummins EPA 2010 engines, a performance penalty (also known as a derate) is initiated to incentivize the driver to refill the DEF tank. This derate, mandated by the EPA in 2010, is a reduction in engine power (torque) applied only when the DEF level is critically low. Cummins implemented a modification in July 2011, based on a change issued from the EPA, to alter the derate specifically for fire and emergency vehicle applications regarding critically low DEF levels. This change resulted from the Fire Apparatus Manufacturers' Association (

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Posted: Aug 1, 2013

Tunnel Vision, Specs, and Rear Preconnects

Bill Adams

Tunnel vision, the loss of peripheral sight, is a constricted tunnel-like ability to see. Medically, it can be caused by glaucoma. In the fire service, complacency causes it-better defined as an extremely narrow point of view. It's common in old-timers, past-their-prime white coats, and occasionally those who write apparatus purchasing specifications (specs). Affecting vendors as well as firefighters, it's a predetermined prejudiced outlook on any change from the status quo. Severe cases provoke that embarrassing, denigrating, but sometimes factual statement of "200 years of tradition unimpeded by progress." Look no further than a pumper's hosebed and, in particular, at rear preconnect storage.

Stowage-wise, little has changed since preconnected collapsible hose replaced booster lines for initial attack-crosslays and speedlays being exceptions. The recent trend to eliminate traditional pump houses with alternative pump locations has seen a renewed awareness and usage of rear preconnects, probably from necessity rather than choice. Advantages and detriments of crosslays, speedlays, reel storage, and front bumper lays are left for another day.

This Spartan-ERV has three removable aluminum hose storage trays
(1) This Spartan-ERV has three removable aluminum hose storage
trays. Two hose storage areas are located above the trays and two to
the right of the trays. Stainless steel rollers facilitate removal and
reloading. (Photo courtesy of Alan Smith, a Spartan-ERV dealer.)

No preference is shown for the quantities, sizes, and lengths of rear preconnects or for the methods of loading and deploying them. Whether they are packed flat or on edge; one tier wide or two tiers wide; or in a reverse horseshoe, pull-and-dump, or shoulder load configuration is a local matter. Do what's best for your department. This article looks at various locations to store rear preconnects and the importance of specifying them in a clear and understandable manner.

The Bidding Process

Not all fire departments are mandated to follow governmental bidding protocols. Some political subdivisions give fire departments extraordinary leeway in writing purchasing specifications and recommending bid awards. However, in most scenarios, the fire department writes the technical specification and the authority having jurisdiction (AHJ) finalizes the legalities and makes the legal purchase. If the fire department does a lousy job writing the spec, it stands the chance of getting a lousy rig. The same applies to hose storage for preconnects.

An AHJ, especially one not firematically oriented or fire department friendly, can award a bid to a vendor just meeting the written word of the specification. That AHJ may have no concern or little care for what the fire department expected, really wanted, or thought it specified. In political subdivisions, the AHJ is legally obligated to ensure competitive bidding statutes are followed. Be careful. Today's public bidding environment has changed. Vendors are aggressive. Vote-conscious politicians, bureaucrats apprehensive about personal job security, fiscally conservative watchdog groups, and economically strapped taxpayers may not care what the fire department likes, dislikes, or thought it wrote. Specification verbiage, or lack of it, weighs heavily in awarding a contract. Write carefully.

Comprehensive Specifications

It's important to write understandable and definitive purchasing specifications when describing any hosebed. It's imperative when addressing nontraditional storage. Not doing so can cause turmoil when evaluating proposals and may create ill feelings between the fire de

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Posted: Aug 1, 2013

Number of Engine Options for Fire Apparatus Shrinking

By Chris Mc Loone

In a way, recent news from Navistar makes specing engines for your next fire apparatus purchase simpler than ever. It was an unpublicized business decision that I only learned of by accident when I was visiting with an apparatus manufacturer recently. I asked if the company was receiving more specs with Navistar MaxxForce engines or Cummins engines. The representative replied that Navistar just announced it was exiting the loose engine business. So with that answer, it's obvious that it doesn't matter what the split is between the two companies-your only engine option if you choose to buy a custom fire truck is Cummins if you don't choose Pierce. Because, almost concurrently with Navistar's announcement, Pierce released that it has extended its agreement with Detroit through 2018. Through 2018, the Detroit DD13 engine remains available only on Pierce's complete line of custom fire and emergency vehicles.

The Navistar news surprised me. It's not like the company is just getting out of loose engine sales for fire apparatus. The company is no longer selling loose engines at all, choosing to install the engines on the commercial chassis it produces. So technically if a fire department really prefers MaxxForce engines, it can still get them by specing commercial chassis for its apparatus. It will lose the cab customization options but will get the engine it wants.

But to me, Navistar was making a lot of noise in the fire apparatus market. Judging from a number of recent deliveries in our Apparatus Showcase and orders in our Recent Orders section, it was starting to make some inroads. I don't think there are many among us that wouldn't rather have more choices than fewer regarding our fire trucks. So, ultimately, the fire apparatus market is the casualty of a bigger business decision.

That is not to say that the news is bad that Cummins is now set to gain a greater market share in the fire apparatus arena. The company was proud to announce its 2013 line of engines at the 2013 Fire Department Instructors Conference, and, as you'll see in this issue's "Fire Industry Today," Cummins is also very active in working toward a solution to comply with the United States Environmental Protection Agency's (EPA) Direct Final Rule regarding how engines respond to neglected regenerations.

All this said, I'm a little disappointed that there aren't more choices. I wouldn't mind seeing Mack get back into the act and start selling engines to the fire service without having to purchase a Mack cab and chassis-or maybe Ford. I think choice and competition are good for the market. Of course, fire apparatus make up such a small part of the overall market for these engine manufacturers that it's unlikely we'll see that sort of change from Mack or Ford.

Tanker Rollovers

With the hopes of avoiding tanker rollovers, the National Tank Truck Carriers (NTTC) has produced a new version of the Cargo Tank Rollover Prevention Video it developed with the United States Department of Transportation to help educate water tanker drivers on the special characteristics of tank truck vehicles and the actions they can take to avoid rollovers. The video can be viewed at www.tankertruck.org, where it can also be downloaded.

Tragedy Strikes

As I write this, the fire service is reeling from the largest loss of life at a fire since September 11, 2001. We lost 19 firefighters to the Yarnell, Arizona, wildfire. Nineteen firefighters losing their lives at one time boggles the mind. Exact details have been scarce; however, multiple news outlets report that conditions deteriorated to the point that these members of the elite "Hot Shots" firefighting group had to deploy their fire shelters. It is a sobering reminder that although we write constantly in these pages and online about how far

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