PRODUCT INFORMATION
INDEX
DATE
Dep. 2
IO-C-M-35-001e E
September 2016
AIR FILTERS. MAINTENANCE
4/6
2.2.1. BLOW-THROUGH
NEVER clean the filter cartridge mounted in the filter or on the engine or in the engine room. Moreover, it is
advisable to carry out this operation at a safe distance from any object susceptible to be damaged by blown out
dust. Wear respiratory mask, eye and hand protection.
Maximum recommended compressed air pressure to avoid damage to the cartridge: 6 kg/cm
2
Blow through in the direction opposite the cartridge's use, from inside out and from top to bottom, turning the
cartridge. Keep the gun nozzle at least 5cm away from the internal perforated plate.
2.2.2. WASHING
Washing is recommendable only if the filter cartridge has been fouled by contaminants mixing with dust to form
dirt that compressed air will be unable to remove.
This method should not be used more than twice before replacing the cartridge.
1. Detach the major portion of dirt with compressed air or a water jet.
2. Soak the cartridge in water with a solvent for not less than 15 minutes.
3. Rinse with a water jet until clear water comes out. Maximum recommended pressure: 2.5 kg/cm
2
.
4. Let the cartridge dry
Do not use compressed air for drying.
Do not re-assemble the filter until the cartridge is completely dry and has been checked again.
2.3 SUBSTITUTION OF FILTER CARTRIDGES
Changing the cartridges of air filters must take place, with the engine at rest, in a ventilated room, following
these instructions:
1. For tangentially sealed filters, back off the air filter locknut and remove the front sealing ring. Also, remove
the washer from the main cartridge. For radially sealed filters, release the metal latches and remove the
cover.
2. Extract the main filter cartridge from the engine's filter, avoiding impacts of the cartridge against the casing.
3. For tangentially sealed filters, remove the washer from the safety cartridge, if this has to be changed, and
take out the safety cartridge.
4. Inspect the inside of the filter casing and clean it with a moistened rag. Also, check the exhaust valve at the
bottom of the filter and eliminate possible dirt build-ups or condensates.
5. Check the elasticity of the sealing gaskets, mounted on the cartridges, by pressing with your finger and
watching the gaskets recover their original form. Wipe the gaskets clean with a moistened cloth
6. Change old cartridges by new ones, making sure their references coincide.
7. Reassemble the filter, proceeding in reverse order of its disassembly. For tangentially sealed filters, verify
that the axial sealing gaskets lean correctly against the filter casing. Take special care when fitting the front
sealing ring, to ensure total tightness. For radially sealed filters, insert the main and safety cartridges into the
casing, as you would put a cork into a bottle; the two cartridges will centre and align themselves
automatically.
8. Make sure that all fittings and ducts close hermetically.
5.2.48
O&M_2.002211.810_A_10_2016
