AIR CLEANERS AND FUEL SYSTEM-N.2 ~ N2 Oil Bath Air Cleaners - See Fig. N.4 Inspect cleaned element by placing a bright light inside and looking through element. Any thin spots, pin holes or other damage will render the element unfit for further use. The element should be renewed after six detergent washes or annually, whichever occurs first. Clean the inside of the element body and dry thoroughly. Inspect joints, hoses and clips and renew where necessary. Re-assemble cleaner ensuring that all jOints are leak proof. To service the oil bath type cleaner, the lid should be removed and the element lifted out.
The oil in the container should be drained out and the dirt and sludge thoroughly cleaned out with a proprietary cleaning fluid or Kerosene. Refill the container with clean new engine lubricating oil, to the indicated level. The woven filter element should be cleaned in a bath of Kerosene. Do not use petrol (gasoline) as this highly volatile fuel could cause explosive damage within the engine. The indicated filling mark level should never be exceeded, otherwise oil can be drawn up into the engine which could lead to uncontrolled engine speeds, and excessive engine wear. Extreme Heavy Duty Two Stage, with Multiple Elements "Rotopamic" - See Fig.
N.3 The "Rotopamic" type air cleaner may be fitted where the application is designed to work in heavy concentrations of dust and a restriction indicator must be fitted. The air cleaner elements are replaceable and no attempt should be made to clean or re-use dirty ele- ments or cartridges. N4 The heavy duty oil bath air cleaners are usually fitte.d with a centrifugal pre-cleaner mounted on top of the main cleaner, this should be removed and the air inlet vanes in the bottom plate of the assembly, the ejection slots on the side of the cone and the vanes in the outlet tube, cleaned of dust and dirt.
The de- tachable element is accessible by lowering the oil container which may be attached by clips or a pinch screwed clamp. Thoroughly clean the container and refill to the in- dicated level with new engine lubricating oil. The separate element should be cleaned in a Kerosene bath. The upper element which is permanently attached inside the body should be periodically cleaned by washing in a Kerosene bath. Drain the element thoroughly before reassembly and do not use petrol (gasoline) for cleaning purposes. N3 For cartridge replacement, unclamp and remove the moisture eliminator or pre-cleaner panel, pull out the dirty cartridges and insert the new ones. Refit the pre- cleaner.
Never use petrol (gasoline) for cleaning any of the air induction system.