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Field testing of CLAAS ORIGINAL filters –Everything you need to know about filters.

Focus on filters

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Only CLAAS tests in the field.

This guide tells you everything you need to know aboutup-to-date filtration in agriculture and the consequenceswhich can result from the use of inferior filters in agriculturalmachines. Furthermore, we provide detailed insights into thesophisticated test set-ups used to compare the performanceof CLAAS ORIGINAL filters and non-genuine filters in the field.

Only CLAAS has compared ORIGINAL filters and non-genuinefilters in the field during an entire harvest season. In order toensure that the tests were conducted under real-worldconditions, established non-genuine filters were purchased inthe market. The filters were then used on identical machinesunder comparable operating conditions. The interesting resultsof this field test are presented clearly and comprehensibly.

The differences in quality between ORIGINAL and non-genuine filters are also shown. There is a huge andbewildering range of aftermarket filters. CLAAS conducted testpurchases and closely examined various non-genuine filters.Take a look at the shortcomings of what are apparentlycompatible filters and see what happens when the non-genuine filters fail to meet the CLAAS quality standards.

Exhaustive field testing is the final stage in the development ofevery product. CLAAS always develops products as completesystems, in which filtration is considered as an integral partfrom the very start. Working in partnership with experts fromthe filtration industry, we develop the best solutions for yourCLAAS machine. The complete machine must then undergointensive testing in tough, everyday working conditions toprove that the entire system functions perfectly in every detail.

See the benefits of CLAAS ORIGINAL filters for yourself.

Real-world performance is what counts.


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Filter tests in the field


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Contents.


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Contents

Filter tests in the fieldPreparations 6

CLAAS filter range 10

Air filtersCharacteristics 12Comparison in the field 14

Hydraulic oil filtersCharacteristics 18Comparison in the field 20

Engine oil filtersCharacteristics 24Comparison in the field 26

Fuel pre-filtersCharacteristics 28Comparison in the field 30

Fuel filtersCharacteristics 32Comparison in the field 34

Cab air filtersCharacteristics 36

What kind of things can happenif ...? 38

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Filter tests in the field – The preparations.

Reality cannot be simulated – CLAAS carriesout testing in the field.

Today's filtration technology is usually tested in laboratories.These sophisticated tests ensure that factors such as fit andperformance parameters are matched to each CLAASmachine. However, laboratory tests cannot replace everyaspect of real-world operation.

Working in cooperation with a contractor in the Eifel region ofGermany, CLAAS compared ORIGINAL and non-genuinefilters in two CLAAS JAGUAR forage harvesters over thecourse of an entire harvest. The non-genuine filters testedwere selected carefully with regard to their comparability.

Since 2010, working in partnership with the Rendsburgbranch of Deula (German Training Centres for AgriculturalEngineering), CLAAS has carried out intensive field tests withCLAAS ORIGINAL parts and non-genuine parts.

The testing process places great emphasis on using the partsin parallel under identical conditions. Only in this way is itpossible to compare them and carry out a reliable assessmentof their performance.

Hermann Thomsen, Deula Rendsburg

Deula is an independent organisation whose activities includeconducting comparative tests on behalf of the agriculturalindustry. CLAAS uses this external organisation in order toensure the impartiality and independence of the tests.

No other manufacturer in the agricultural machinery sector hasyet performed such sophisticated tests. Only CLAAS hastested in the field under real-world conditions instead of relyingon the usual laboratory tests which can only approximate toreality. Only field tests, with their extremely demandingmoisture, dirt and dust conditions, clearly demonstrate thedifferences in quality between ORIGINAL and non-genuinefilters.


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Before starting grass harvesting, both machines wereconnected to a dynamometer and their performance wasmeasured. At the start of the test, the performance of bothmachines was identical. The fuel consumption figuresobtained during the test could therefore be compared andconclusions drawn about the effect of the filters.

The field tests were conducted using two identical CLAASJAGUAR machines in order to ensure comparability betweenORIGINAL and non-genuine filters.

A professional customer was selected in order to make thefield tests as authentic as possible. In professional use duringthe harvest season, a forage harvester clocks up as many as1000 operating hours, sometimes even working double shifts.Such intensive use of a machine provides an ideal basis forconducting meaningful wear tests in a short time. As thecontractor works on farms in a radius of up to 60 km atharvest time, it was possible to cover a range of differentoperating conditions. The operating profile of both machines iscomparable.

In order to ensure the comparability of the filters, the non-genuine filters were purchased through established saleschannels (e.g. online shops). According to the suppliers, thenon-genuine filters tested corresponded to the CLAASORIGINAL filters in terms of quality, filtration performance anddimensions. On the following pages you can find out if thenon-genuine filters were able to withstand the demands ofreal-world operation.



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A central measurement box was installed next to the cab.The purpose of this measurement box was to record all thecollected data securely at one second intervals. The measureddata were read out on a daily basis and analysed in anevaluation system. In this way, more than 5.5 million datarecords were collected for each machine.

Data records were generated for the following parameters: airfilter differential pressure, pressure before and after the engineoil filter, engine oil temperature, engine speed, fuelconsumption and diesel temperature.

GPS technology was used to determine the ground speedwhile the outside temperature, relative humidity andatmospheric pressure were also measured.

The right-hand picture shows clearly the high level of dirt anddust from which the complex measuring technology had to beprotected.

Data collection

Information about the measurement box

Position of measurement box

Measurement and evaluation of data (approx. 5.5 million datarecords per machine)


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Test set-up for diesel consumptionmeasurement.

In order to determine the precise diesel consumption of bothCLAAS JAGUAR machines, each was equipped with ameasurement cell with a repeat accuracy of 0.03%. This unitmeasures the actual amount of diesel fuel consumed, takingaccount of the excess fuel returned from the engine.



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Overview of CLAAS ORIGINAL filters.

Engine air filters

CLAAS ORIGINAL engine air filters protect your engine fromcontamination, ensure long-term operational reliability and aretailored perfectly to the performance characteristics of CLAASmachines.

Engine oil filters

CLAAS ORIGINAL engine oil filters provide your engine withlasting and reliable protection against damage to connectingrods, bearings and the crankshaft.

Most of the filtration systems used in the agricultural sectortoday are depth filters. These special filter elements are usedwhen particles - ideally 100% of them - are to be removedfrom liquids (oil and fuel) or gases (air). The requirements ofthe agricultural sector are regarded as the toughest test for amodern filter. The challenges here are even greater than thoseencountered in quarrying, for example.

The separation of particles is carried out in the depth structureof the medium on the surface of the individual fibres. Theseimpurities may include dust, metal wear debris or sootparticles resulting from an incomplete combustion process.

In addition to removing the solid particles, the fuel filters andfuel pre-filters also have to remove water residues in the fuellines.

You can count on CLAAS for the perfect filter for your CLAASmachine, designed precisely to work as an integral part of thesystem and optimised for the operating conditions. You canfind a wealth of valuable information about our filter range onthe following pages.

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CLAAS filter range

Hydraulic oil filters

CLAAS ORIGINAL hydraulic oil filters protect your machine'shydraulic system optimally against wear debris and particles.

Cab air filters

CLAAS ORIGINAL cab air filters protect the operator in thecab from environmental emissions and especially from sprayvapours.

Fuel pre-filters

CLAAS ORIGINAL fuel pre-filters protect your fuel systemagainst excessive moisture and contaminants which can resultfrom refuelling in the field.

Fuel filters

CLAAS ORIGINAL fuel filters protect your injection systemagainst residual contaminants and microparticles in order toprevent damage to your injectors and high-pressure pumps.



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Characteristics of a CLAAS ORIGINAL air filter.

Why CLAAS ORIGINAL air filters?

Air filters are exposed to extreme conditions, especially as aresult of high levels of dust and moisture. During harvesting inparticular, dust exposure is extremely high. Engine air filtersclean the engine intake air and so ensure correct combustionof the fuel.

ORIGINAL air filters protect the engine from contamination,ensure long periods of operational reliability and are tailoredperfectly to CLAAS machines' performance characteristics.

They undergo continuous improvement to ensure that yourmachine has the highest possible degree of protection.Optimisation for their function within the overall conceptbegins during the machine development phase.

The next page shows you the key characteristics which definea CLAAS ORIGINAL air filter.



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Air filters

Impregnation of filter paperThe impregnation process provides optimal protection againstmechanical, thermal and climatic influences, and againstoperating fluids.

How you benefit:− Inhibits moisture uptake− Ensures lasting robustness

High-quality filter paperWith their special fold design, ORIGINAL air filters guaranteean unobstructed inflow of dust-laden air into the folds. Thespecial fold geometry prevents the filter paper surfaces fromcoming into contact with one another. The evenly spacedpores ensure a high standard of dirt separation.

How you benefit:− Long replacement intervals− Optimised filter performance− High engine protection

Optimal cleaning performanceUp to 99.9% of all particles are filtered out. The virtuallyparticle-free intake air increases the service life of the engine inall conceivable dust conditions.

How you benefit:− Long service life of the engine− Highest possible fuel efficiency

Precisely fitting gasketEven the most minor of gasket integrity defects betweengasket and filter housing can allow dirt to enter the enginedirectly, causing wear. A gasket that remains perfectly intactafter many hours of operation will increase the engine'sservice life.

How you benefit:− Long service life− Optimal engine output

Filter service lifeThanks to the ingenious fold geometry of our filters, a largefilter surface area can be incorporated into an extremely smallspace. Our filters feature a high dirt absorption capacity andboast long replacement intervals.

How you benefit:− Long filter service life− Low operating costs



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Failure to observe therecommended replacementintervals means riskingsignificantly higher fuelconsumption and reduced areaoutput.

Air filters – The results of the field tests.

Air filters are exposed to extreme conditions, especially as aresult of high levels of dust and moisture.

In addition to the two forage harvesters shown, two identicalcombine harvesters (CLAAS LEXION models) were used forair filter tests. Use in combine harvesters during grainharvesting represents the most extreme operating scenarioimaginable for an air filter.

In order to determine the quality of the air filters, the differentialpressures (before and after the filters) as well as the fuelconsumption (at the start and end of the tests) weremeasured. The detailed results can be seen on the followingpages.


Test set-up for air filters in combine harvesters.

Piezometer ring on the air filter housingmeasures the differential pressurebefore the filter.

Piezometer ring on the air bafflemeasures the differential pressure afterthe filter.

Differential pressure sensor recordsmeasured values, and relays them tothe measurement box.



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Air filters

Conclusion

− Higher filtering performance− Lower suction resistance− Up to 10% lower fuel consumption− Reduced cleaning effort− Reduced changeover times (negative costs)

Process costs for air filters.

CLAAS ORIGINAL air filters are remarkable for their reliable filtering performance over long periods of use. The suction resistanceis lower, with the result that engine load and fuel consumption are substantially reduced. At the same time, the load is alsoreduced on both the fuel filter and the overall fuel system. The engine is reliably protected against any dirt getting in.

Priceper unit

Total time used Possible lifetime Fuelper hour

Costsper hour

Total cost

ORIGINAL 100% 164 h 500 h 67 l 100% 100%Non-genuine 53% 164 h 164 h 73.5 l 141% 110%



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The differential pressure in the ORIGINAL air filter is well below that of the non-genuine filter to begin with. This means there is less load on the engine with theORIGINAL filter.

The higher differential pressure in the non-genuine filter and the resulting increase in engine load results in higher fuel consumption.

Differential pressure at start of test

Fuel consumption at start of test

= CLAAS ORIGINAL trend line

= Non-genuine trend line

= CLAAS ORIGINAL absolute values

= Non-genuine absolute values



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After 164 operating hours, the non-genuine filter needs to be replaced. The differential pressure is so great that the filter needs to be cleaned during work operations.The CLAAS ORIGINAL filter continues to operate reliably and is cleaned only at the end of the day. It can continue to be used.

The trend lines show that fuel consumption increases significantly with the non-genuine filter over the course of the day. If the non-genuine filter is used over theentire harvest period, this amounts to substantial additional fuel consumption.

Differential pressure after 164 working hours

Fuel consumption after 164 hours

= warning signal in CEBIS from 35 mb



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Characteristics of a CLAAS ORIGINAL hydraulicoil filter.

Why CLAAS ORIGINAL hydraulic oil filters?

Today's harvesting machines have complex and costlyhydraulic systems whose sensitive hydraulic valves andhydraulic pumps require clean, thoroughly filtered hydraulic oil.Wear debris and particles should not reach these sensitivepoints.

ORIGINAL hydraulic oil filters protect your machine's hydraulicsystem optimally against wear debris and particles. Damageto expensive hydraulic components (such as the hydraulicmotor and hydraulic pump) can therefore be avoided.

The following page shows the key characteristics which definea CLAAS ORIGINAL hydraulic oil filter.



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Hydraulic filters

Filter mat structureAn optimised filter mat structure makes for low pressurelosses at the filter element accompanied by a highcontaminant absorption capability.

How you benefit:− Long maintenance intervals− Improved component protection− High-performance separation

Outer sheath for protection of filter matThe star-shaped folded filter mat is encased in a robust outersheath made of plastic. The texture of the material ensuresthat the oil is spread evenly across the mat, while being highlydurable and resistant to damage.

How you benefit:− Uniform oil distribution− High operational reliability, thanks to robust outer sheath

Zinc-free constructionUsed with current synthetic hydraulic oils, the zinc-freeconstruction prevents the formation of zinc soap, therebyovercoming the risk of blockages.

How you benefit:− Ideal for use with modern hydraulic oils− Reliable protection of expensive hydraulic components



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Today's harvesting machines have complex and costlyhydraulic systems. It is particularly important that the sensitivehydraulic valves and hydraulic pumps are supplied with clean,thoroughly filtered hydraulic oil in order to avoid potentialdamage. In order to measure the filter performance, thevolume and size of the particles were measured using theonline measurement system (see photos at right) before andafter the hydraulic filter element. Particle measurements wereconducted for the 4 μm class which is regarded as thestandard for determining contamination.

The measurement process was conducted on the basis ofDIN ISO 4406 and indicates the cleanliness class of thehydraulic oil in the form of range codes (see table). The higherthe range code, the greater the degree of contamination. If thecontamination per 100 ml is 8,000 to16,000 particles equal toor greater than 4 μm, the range code is 14.


Hydraulic oil filters – The results of the field tests.

As the test shows thesignificantly higher oilquality where anORIGINAL Filter is fitted,the additional cost ofpurchase is of nosignificance.



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Hydraulic filters

Test set-up for hydraulic oil filters.

An online measurement system was installed to determine theperformance of the hydraulic oil filters during the field test.

The data were recorded in the internal memory of themeasurement system and were read twice a day.



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The range codes for the ORIGINAL filter are a maximum of 15 before the filter and a minimum of 9 after the filter.

The range codes for the non-genuine filter are a maximum of 18 before the filter and a minimum of 12 after the filter.



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Comparison of filter effect after filter

ConclusionThe graphs clearly illustrate the reality: the CLAASORIGINAL hydraulic oil filter is able to filter significantlymore foreign particles out of the hydraulic oil. It is clearfrom the measurements that the hydraulic oil in themachine with an ORIGINAL filter is cleaner.

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The graph clearly shows the difference between the ORIGINAL filter and the non-genuine filter. The range codes after the ORIGINAL filter are far lower than thoseafter the non-genuine filter.

Cleanliness classes as specified in ISO 4406:99

No. of particles per 100 ml

More than Up to and including Range code2,000,000 4,000,000 221,000,000 2,000,000 21

500,000 1,000,000 20250,000 500,000 19130,000 250,000 18

64,000 130,000 1732,000 64,000 1616,000 32,000 15

8000 16,000 144000 8000 132000 4000 12

1000 2000 11500 1000 10250 500 9



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Characteristics of a CLAAS ORIGINALengine oil filter.

Why CLAAS ORIGINAL engine oil filters?

CLAAS ORIGINAL engine oil filters provide your engine withlasting and reliable protection against in-engine wear.

If very fine dust and dirt should enter the engine oil circuitduring harvesting (as a result of an inferior air filter, forexample), these contaminants act like sandpaper and cancause damage to the connecting rods, crankshaft andbearings.

The next page shows you the key characteristics which definea CLAAS ORIGINAL engine oil filter.



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Engine oil filter

High-quality filter paperThe filter paper consists of a special mix ofcellulose and synthetic fibres. Despite the fine-meshed fibrestructure (good filtration characteristics), the filter elementallows a high oil throughput. This ensures that the oil is able toreach the sensitive lubrication points quickly. The mixedfriction phase is therefore quickly overcome.

How you benefit:− Perfectly matched to the requirements encountered in theagricultural sector.

− Extremely durable− Reliable performance within the prescribed maintenanceinterval

Upper end discThe lasting, leakproof connection between the filter paper andthe end disc is produced through a sophisticated weldingprocess. Internal leaks are therefore impossible.

How you benefit:− High strength of the filter− Protection against collapse in the event of excessivepressure differences

Felt gasketThe felt gasket prevents internal leakage as it completely sealsthe filter cover.

How you benefit:− Custom-fit seal in filter casing

Lower end discThe lower end disc is designed to fit the base of the casingprecisely and so form a high-quality seal. This makes for long-term avoidance of leaks, even under high pressures.

How you benefit:− Strength of the filter− Prevents internal leaks



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The oil pressure before and after the filter element wasmeasured accurately to the second and recorded. This wasperformed using two oil filter modules which were equippedwith pressure measurement points before and after the filterelement, as specified by the manufacturer. These twopressure readings were used to calculate the differentialpressure. If the outside pressure increases excessively, as aresult of viscous oil or a blocked oil filter for example, the oilpressure after the filter element falls. If the pressure difference

Harvesting machines often operate at their performance limitsduring harvesting. In the commercial vehicle sector, bycontrast, engines operate predominantly in the lower partial-load range. It therefore follows that there are fundamentaldifferences in the requirements which an oil filter has to meet.

In order to determine the quality of the oil filters, the oilpressure was measured before and after the filter element.Using the resulting differential pressure as a basis, it ispossible to deduce if the bypass valve opens. Opening of thebypass valve should be avoided, as it means that unfiltered oilcan reach the lubrication points. Furthermore, oil sampleswere taken and subjected to laboratory analysis for signs ofoxidation, wear debris and silicates.

Engine oil filters – The results of the field tests.

Test set-up for engine oil filters.


A maintenance interval ofup to 500 hours is all themore demanding atharvest time. Can everyoil filter cope?

(differential pressure) is too great, the bypass valve opens tomaintain the oil supply to the engine. The bypass valve is aself-contained, spring-loaded and non-adjustable valve whichis not monitored or indicated.



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ConclusionThe test showed that this non-genuine filter is able to offer almost comparable performance. Nevertheless, doubts remainas to whether the maintenance interval prescribed by the engine manufacturer can be maintained. Furthermore, it isimportant to bear in mind that a non-genuine filter is not approved by the engine manufacturer. The consequences ofusing a non-genuine filter can be seen on page 38.

Comparison of engine oil filters (measured over the last 100 operating hours)

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Differential pressure: CLAAS ORIGINAL filter

Differential pressure: non-genuine filter

At the end of the tests, the differential pressure of both filters is unchanged.

Oil temperature > 85 degrees Celsius

Engine speed: > 1500 rpm



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Characteristics of a CLAAS ORIGINALfuel pre-filter.

Why CLAAS ORIGINAL fuel pre-filters?

Refuelling in the field is associated with particularly high risk atharvest time as it can allow dirt and water to enter the fuelsystem. CLAAS fuel pre-filters reliably prevent your fuel systemfrom being contaminated by an excessive proportion ofcoarse dirt particles and an excessive concentration of water.

The next page shows you the key characteristics which definea CLAAS ORIGINAL fuel pre-filter.



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Fuel pre-filter

Filter paperThe filter paper consists of a special mix of cellulose andsynthetic fibres and is also impregnated. This ensures that thefuel system has reliable and long-lasting protection against theingress of coarse dirt particles and water.

How you benefit:− High water separation ability− High absorption capacity for coarse dirt particles

Gasket integrityThe precisely fitted and acid-resistant gasket was speciallydeveloped for use in the agricultural sector.

How you benefit:− Ideal seal between gasket and filter flange

Spin-on threadThe spin-on thread is engineered precisely to fit your CLAASmachine.

How you benefit:− Straightforward fitting− Fits your CLAAS machine perfectly

Feed boresSpecial feed bores ensure the unimpeded flow of the dieselfuel. Undersupply of fuel to the engine and a consequentialloss of power can be avoided reliably.

How you benefit:− Reliable fuel flow− Consistent machine performance



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The fuel pre-filters were fitted with diesel sampling points.These allowed diesel fuel samples to be taken from before thepre-filter and after it (filtered fuel) at predefined intervals. Thesesamples then underwent laboratory analysis.

Refuelling in the field is frequently associated with aparticularly high risk. By its very nature, this operation makes itall too easy for dirt and water to enter the fuel tank. It wasprecisely this type of situation that CLAAS addressed in itsprogramme of field tests. The machines were refuelled in thefield during harvesting.

The filtration performance of a fuel pre-filter is measured onthe basis of the amount of water and dirt that it filters out ofthe fuel. It is indicated in mg (of contaminants) per kg (of fuel).

Fuel pre-filters – The results of the field tests.


The superior filtrationperformance of theORIGINAL filter is thedecisive factor. Injectionsystem components aresensitive and costly.

Test set-up for fuel pre-filters.



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Water content after pre-filter

Fuel samples from tank and pre-filter

Start of harvest End of harvest Start of harvest End of harvest

ConclusionThe non-genuine filter does not reach the scheduled maintenance interval. It would have to be replaced earlier. In addition,considerably greater amounts of water and dirt particles entered the fuel system (e.g. through refuelling in the field) thanwere filtered out. The overall contamination level actually exceeds the limit set for the sale of diesel fuel in the EN 590 dieselfuel standard (24 mg of dirt per kg of diesel fuel). The CLAAS ORIGINAL filter, by contrast, protects your injection systemagainst contamination by dirt and water all the way to the scheduled maintenance interval.

The higher degree of fuel contamination recorded for the ORIGINAL filter at the start of harvesting is due to older fuel which was already in thetank. The graph shows that, at the end of harvesting, the water content of the fuel was clearly lower with the ORIGINAL filter than it was with thenon-genuine filter.

Dirt from tank

Dirt after pre-filter



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Characteristics of a CLAAS ORIGINAL fuel filter

Why CLAAS ORIGINAL fuel filters?

CLAAS ORIGINAL fuel filters protect your injection systemreliably against dirt. The main filter has a significantly finerfiltration action than the pre-filter.

The next page shows you the key characteristics which definea CLAAS ORIGINAL fuel filter.



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Fuel filter

Filter paperThe filter paper consists of a proven mix of cellulose andsynthetic fibres. It has a finer structure than the filter paper ofthe pre-filter. This ensures that ultra-fine particles areseparated reliably. The filter paper is also impregnated.

How you benefit:− Costly components (injectors, high-pressure pumps) areprotected against damage

End discA perfect connection between the filter paper and the enddisc is ensured through a sophisticated welding process.

How you benefit:− High product quality− Consistently high filtration performance

Rubber gasketIn order to avoid internal leaks, this precisely fitting gasketmade of special, acid-resistant rubber ensures a lasting seal.

How you benefit:− Lasting protection against dirt ingress



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In order to test the performance of the fuel filters, severalsampling points were fitted to the fuel system. The pictureshows the sampling point after the main filter.

Fuel filters are subject to the same requirements as fuel pre-filters. Here, too, in-field refuelling represents a high risk. Dirtcan enter the fuel tank freely. This was precisely the type ofsituation that CLAAS addressed in its programme of fieldtests. The machines were refuelled in the field duringharvesting.

As with the fuel pre-filters, the test focused on determining thedegree of contamination. A sampling point after the main fuelfilter (see picture below) allowed diesel samples to be taken.These samples then underwent laboratory analysis forcontamination.

Fuel filters – The results of the field tests.


In view of the difficultiesassociated with measuringfuel filter performance, wedecided to adopt a methodbased on sampling followedby laboratory analysis.

Test set-up for fuel filters.



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Contamination after pre-filter

Contamination after main filter

ConclusionThe inferior filtration performance of the non-genuine filter resulted in more dirt particles entering the fuel system. Thecontamination level actually exceeds the limit set for the sale of diesel fuel in the EN 590 diesel fuel standard (24 mg of dirtper kg of diesel fuel). It seems likely that the dirt content that was initially retained was suddenly released when the filterbecame oversaturated. In view of the degree of contamination, it would have been necessary to change the filter beforethe replacement interval.

The degree of contamination is significantly higher with the non-genuine filter.



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Characteristics of a CLAAS ORIGINALcab air filter.

Why CLAAS ORIGINAL cab air filters?

The cab of every modern agricultural machine is a workplace.As such, it is covered by the workplaces ordinance. CLAASORIGINAL cab air filters protect the operator in the cabagainst environmental emissions and especially against sprayvapours. The cab air filters are integrated optimally in theoverall concept of every CLAAS cab.

The next page shows you the key characteristics which definea CLAAS ORIGINAL cab air filter.



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Cab air filters

GasketThis gasket is matched optimally to the cab geometry.

How you benefit:− Lasting protection against pollutant penetration

Filter paper/activated charcoalDepending on the application, it is possible to use a paperfilter or an activated charcoal one. The fresh air supply to thecab forms a single unit with the filter and the fan. These twocomponents must be coordinated perfectly.

How you benefit:− Controlled and protected fresh air supply



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The natural contamination of the engine oil, e.g. throughinternal engine friction, must be filtered out quickly andefficiently. Engine oil contaminants coming from outside, in theform of dust, place an additional burden on the filter and mustnot reach the lubrication points in the engine.

Furthermore, in contrast to the commercial vehicle sector,agricultural machines operate at high engine revs which aredetrimental to the filters. They generate higher lubrication oilpressures which non-genuine filters are not always able towithstand in the long term.

The pictures on page 39 show what can happen to an enginewhen an unsuitable filter is fitted. The high external pressurehas caused the filter paper of the engine oil filter to becompressed into bundles. As a result, the filter area, whichwas already smaller than that of the CLAAS ORIGINAL filter,has been reduced even further. The remaining filter area was

What can happen if unsuitable filters are used?

subject to ever greater loads which increased the pressureand led to internal leaks. These leaks go unnoticed in use asthe normal oil pressure is attained. But they allowed thecontaminated oil to reach the lubrication points of the enginewithout having been filtered. The result was catastrophicengine damage.

What made the situation particularly annoying for thecustomer was that the engine manufacturer refused to accepta warranty claim for the damage or to handle it on a goodwillbasis because an approved oil filter had not been used. Thecustomer therefore not only suffered from the non-availabilityof the machine, but also had to pay for a costly replacementengine.

Note

Possible consequences of using unsuitable filters:

− Interior leaks as a result of increased oil pressure− Dirty oil reaches engine lubrication points which aresubject to extreme loads

− Engine damage− Loss of warranty cover− Machine unavailable for work− High repair costs

Only CLAAS ORIGINAL filters are approved. So only usethe correct CLAAS ORIGINAL filter for your particularapplication.



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What can happen if ... ?

View of the damaged connecting rod bearing. Clearly visible from outside: discolouration (temper colour) of the connecting rod bearing cap. This discolouration is aresult of an excessive thermal load caused by increased friction within the engine.

Connecting rod bearing bolts damaged or broken. Connecting rod bearing cap with brittle fracture surfaces.

CLAAS ORIGINAL Non-genuine

Wrecked connecting rod bearings with fragments of the cylinder liner. On the left, a new CLAAS ORIGINAL filter, on the right, a defective non-genuinefilter (in use

40

There is a huge choice of apparently compatible filters atextremely favourable prices in the accessories market. Buthow do these non-genuine filters differ from the ORIGINAL?CLAAS purchased a selection of current filters and assessedthem visually.

We have summarized the differences between CLAASORIGINAL and non-genuine filters on the pages which follow.

Filter test purchases –Comparison of ORIGINAL and non-genuine filters.



41

Filter test purchases

As soon as they are manufactured, CLAASORIGINAL filters are packaged in protective plasticbags to ensure immediate protection against dirtingress. No such measure is taken in the case ofthe non-genuine filter.

On the non-genuine filter, fibres can already beseen separating from the felt gasket (on the filteredoil side). This can result in contamination of thehydraulic system and lead to malfunctions.

A careless manufacturing process can leave clearlyvisible welding spatter on the end disc. It may beassumed that the resulting weld burns also madesmall holes in the filter paper. Proper filtration of theoil can therefore no longer be guaranteed.

CLAAS ORIGINAL filter: no weld spatter, a properlysealed end disc, no fibre residues. Lasting filtrationperformance is ensured from the very start.

Hydraulic oil filter

A proper manufacturing process is essential for today's filters.Damage or dirt ingress resulting from the manufacturingprocess must be prevented right from the start. This isessential to ensure that the filter functions reliably.



42

Engine oil filter

The internal seal between the unfiltered side and the filteredside is considerably wider in the CLAAS ORIGINAL filter thanin non-genuine filters. This means that there is betterseparation and sealing between the two sides in theORIGINAL filter. The inadequate strength of the seal in thenon-genuine filters can lead to an internal leak which wouldallow unfiltered oil to reach the lubrication points. As soon as they are manufactured, CLAAS

ORIGINAL filters are packaged in protective plasticbags to ensure immediate protection against dirtingress. No such measure is taken in the case ofthe non-genuine filter.

The packaging of the non-genuine filter is badlydamaged. There is a risk of dirt entering the filter.

The non-genuine filter only has a narrow sealing lip.There is a risk of an internal leak.

CLAAS ORIGINAL filter: the wide sealing lipsignificantly reduces the risk of an internal leak.



!

Filter test purchases

Points to remember when buying filters

Caution: do not rely on "vague" claims, such as"compatible with" and "suitable for". Importantcharacteristics concerning dimensions, filtrationperformance and quality (see examples) may notcorrespond to the high standards of the ORIGINAL filterproducts. Order all filters for CLAAS machines throughofficial CLAAS sales channels in order to be certain thatthey are 100% correct for your machine.

The bonding of the important sealing lip on the non-genuine filter is inadequate. As a result, unfiltered aircan reach the operator in the machine.

CLAAS ORIGINAL filter: tested in accordance withEuropean Standard 15695-2:2009. Compliancewith this standard means that the filter provides theoperator in the cab with sufficient protection againstenvironmental factors (dirt, dust, pollen). There is nosuch certification of compliance on the non-genuinefilter.

Cab air filter

Deficient bonding means there is nothing to stop pollutantsfrom reaching the operator in the cab.

Example of website selling non-genuine filters.



00 0169 119 0 / 200 / 0817 / ZL / DC

CLAAS Service and Parts GmbHMühlenwinkel 133428 HarsewinkelGermanyTel. +49 (0)52 47 12-0claas.com



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