Air Filter Cleaning
Donaldson recommends to service Air Filters by monitoring the airflow restriction levels in the air intake system
Some vehicle owners and maintenance supervisors, concerned with lowering their operating costs, clean and reuse their heavy-duty air filter. Factors to consider before you decide whether cleaning or washing of air filters is appropriate for your vehicle or fleet: • Heavy-duty air filter manufacturers do not recom- mend any type of cleaning process be used on their products. Donaldson, like other heavy-duty air filter manufacturers, does not warrant the air filter once it has been cleaned.
• Damaged filters should not be cleaned or reused. If the filter is damaged in service, investigate the source of damage and make corrections to avoid future damage.
• Never attempt to clean a safety element. Replace it after three main element services.
• Rather than cleaning or reusing filters, consider upgrading to an extended service filter and service the filter by restriction indicators. Donaldson recommends, when the specified maximum service limits are reached, to follow the proper service procedures and replace the used filter with a new Donaldson filter. Dispose of the used filter in a responsible manner.
Filter dirt holding capacity is reduced 20-40% with each cleaning.
There is a risk of dirt reaching the clean side of the filter while cleaning, plus possible filter damage from high pressure water or compressed air, makes cleaning or washing a gamble. Add the cost of cleaning to the danger of filter damage when determining the risk versus the value of filter cleaning process. Reuse of cleaned heavy duty filters increases the likelihood of improper air cleaner servicing because of the shortened service life. Each time the air intake system is serviced, it is exposed to the possibility of contamination.
144 n Engine Air Cleaners, Accessories & Service Parts
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