Holm Education: Basic Filter Know-How

Understanding your AdBlue® from your Air Filter and your Cabin from your Transmission Filter may sound easy enough, but each filter has a specific location and a particular job to do. Each is susceptible to contaminants and is at risk of failure if not regularly replaced, so understanding their role and how to care for them is critical to ensuring long vehicle life.

We are proud to have the most extensive range of credible, high-quality, original spec filter types, including Holm and manufacturer own brands for plant and agricultural vehicles.

Why do you need plant machinery filters? 
Filters are your first line of defence. Removing all particle contamination forms is your highest priority to ensure a long, reliable life for your machinery.

Which filters are available?

• ADBlue® Filter

An ADBlue® filter Is used in one of the latest techniques to clean up diesel emissions, which is known as selective catalytic reduction (SCR). The liquid treats exhaust gases and removes harmful pollutants, including nitrogen oxides (NOx), of which nitrogen dioxide (NO2) is the most harmful. The fluid is stored in a separate tank and is fed into part of the machinery’s exhaust. A chemical reaction converts the harmful NOx exhaust gases into harmless nitrogen and water.

• Air Filter

A vehicle’s engine requires oxygen to operate, but this air that is entering needs to be cleaned beforehand, to stop debris, dust and pollen causing damage. The air filter is located inside the engine bay in a sealed box, to ensure that only particle-free air is ingested by the engine.

In many applications, a secondary or inner filter is fitted.  It is vitally important that these filters also get regular attention and are replaced as required. A blocked or partially blocked air filter system will cause the engine to suffocate. If not replaced at regular intervals, it can dramatically increase fuel consumption and place additional strain on the engine and driveline components.

• Cabin Filter

These filters are installed in the air intake to the cabs of plant vehicles used in various industries such as construction sites and agriculture where drivers can potentially breathe in hazardous airborne dust and particles.

Cabin filters contain a catalyst which removes particles such as dust, mould and bacteria from the air by absorbing them, improving air quality and protecting drivers from potentially harmful exposure.

• Fuel Filter

A fuel filter sits between the fuel tank and the engine; it screens out dirt and rust particles from the fuel.

Vehicle performance depends on a finely balanced mix of air and clean fuel. Dirty, blocked, or worn fuel filters will compromise the performance and ultimately the life of the engine, as dirt and debris clog your fuel injectors and carburetor.

• Hydraulic Filter

A hydraulic filter filtrates and purifies the fluid used in the hydraulic systems of construction and agricultural equipment. Ageing components, penetrating moisture and abrasion can increasingly contaminate the liquid over time. The hydraulic filter keeps impurities away from moving parts. 

A Hydraulic filter consists of a paper cartridge and a channel system for the oil. Located in the hydraulic fluid reservoir; it is easily accessible and straightforward to replace. 

• Oil Filter

Oil performs several vital jobs as it flows through a vehicle engine and other driveline components. It keeps the moving parts lubricated, absorbs contaminants and seals the gaps between the piston rings and the cylinder walls. 

Without a filter in place, the oil will pick up dirt, dust, fungus and bacteria which could clog your engine, rather than lubricating it. A regularly changed oil filter will keep your engine oil clean, enabling the oil to perform its function correctly. 

• Power Steering Filter

A power steering filter is designed to filtrate and purify the hydraulic oil in the steering system, so contaminants do not clog the essential moving parts of the steering system.  Located in the hydraulic fluid reservoir; the power steering filter is easily accessible and easy to replace.

• Transmission Filter

A transmission filter cleans the oil that lubricates the gearbox and other transmission components and is situated above the transmission pan, which catches any excess fluid. It is below a pickup tube that connects to the oil pump, which regulates fluid pressure in the transmission. 

Find the filter you need with our Filter Finder. Holm filters are suitable for all makes and models of plant machinery including:

If you would like to speak to one of our knowledgeable filter experts about our OEM equivalent Holm filters and manufacturer branded ranges, please phone Holm on 01403 914400, send an email to info@holmfilters.com or complete our enquiry form.