PRACTICAL TIPS FOR FILTER CHANGES

In this article, the Mann-Filter experts talk about how to carry out an oil filter change quickly whilst also protecting the engine

Oil filter changes require a certain amount of care to ensure that the filter is fitted correctly and is in clean working order.
If a defect goes unnoticed, leaks and increased wear may occur, leading to permanent damage to the engine.
Therefore, it is important to clean the sealing surface, tighten the filter at the correct torque, position the filter element correctly and ensure that only undamaged, suitable filters are fitted.

Mann-Filter has put together the following important tips for installing oil filters.

• Select: it must be ensured the filter is appropriate for its intended application. Using the right filter prevents malfunctions, ensures sufficient oil supply to the engine and helps the oil pressure to build up quickly after the engine has been started. Increased wear, damage to the engine and leaks caused by incompatible seal shapes and sizes can be avoided.

• Check: the filter should be checked before installation to ensure it is sound and intact. If it was damaged during transport, this damage may cause leaks, stop the filter from functioning correctly or lead to malfunctions or increased wear on the filter.

• Clean: a clean working environment makes all the difference when changing filters. Cleanliness prevents dirt and contaminants from entering the system, and malfunctions and even total failure from occurring.

• For spin-on filters:
Clean: the sealing surface on the engine block and/or filter head must be cleaned before the new spin-on filter is installed. Cleaning prevents leaks at the sealing surface and loss of oil.
Lubricate: it is also important to lubricate the seal of the new spin-on filter before it is installed. Otherwise uninstalling the filter will be difficult and time-consuming at the next service. In addition, tightening the new filter at a torque that is too low will result in a “dry” seal with a high adhesion factor, causing leaks.
Tighten: if the fitter resorts to using a belt wrench, this can damage the filter housing, for example by creating dents that may cause tears to develop due to the pulsations of the lubricant. In order to avoid this, it is very important to follow the individual steps in the installation instructions printed on the spin-on filter. As stated in the installation instructions, the spin-on filter should be tightened by hand.

• Installation for filter elements: filter elements must be very carefully installed in order to ensure they are positioned correctly in the housing top. During installation, observe the “open/top” label on the end plates, as this will help the oil pressure to build up immediately after the engine is started. Otherwise, the oil will flow from the top oil channels and filter housing back to the oil sump after the engine has been shut down. This also causes increased wear on the filter and means that the dirty and clean sides of the filter are not sealed off from each other.

For more information, visit www.mann-hummel.com