-8 



A Schedule for Proper Servicing 



Most air cleaners on present day 

 tractors are of the oil bath type. 

 These cleaners collect dirt in 

 four places that require periodic 

 cleaning. 



1. in the screened cap or precleaner. 



2. On the sides of the center pipe. 



3. In the bottom of the oil cup. 



4. In the filter element. 



Most cleaners will continue to 

 perform efficiently if operators 

 will follow this schedule: 



Daily or Every 10 Hours - Remove 



and inspect the oil cup. If more 



than ^ inch of dirt has collected, 



or if the oil has thickened, 



discard the old oil, scrape dirt 



out of the cup, wash the cup in 



kerosene, refill to the oil level 



bead with fresh oil, and replace 



the cup. It is important that 



the proper oil level be maintained in the cup whether it is or is not cleaned. 



Check the lower screen of the filter element and remove any chaff or dirt while 



the cup is off. The screened cap or prefilter should also be checked daily and 



cleaned if necessary. 



Every 60 Hours - In addition to the regular 10 hour maintenance, remove the air 

 cleaner from the tractor, disassemble it and wash it thoroughly in kerosene. 

 Clean the oil cup, precleaner, and valve cover breather by washing in kerosene. 

 Inspect air cleaner hoses and clamps to make sure there are no air leaks. 



What Oil to Use - The oil for the air cleaner should be the same viscosity and 

 type as the oil used in the crankcase. Too heavy an oil will choke the tractor 

 causing it to lose power and waste fuel. Oil that is too light will be pulled 

 into the engine where it will form harmful deposits. Also, the resulting low oil 

 level in the cleaner will permit dirt to enter the engine. Used oil is not 

 satisfactory for use in air cleaners since it already contains carbon, unburned 

 fuel, and dirt. 



Special Warning to Diesel Owners 



Because diesel tractors require more air than gasoline 

 models, the air cleaner will require more frequent ser- 

 vice. Using too light an oil in the cleaner cup or 

 overfilling the cup can cause a runaway engine. As ex- 

 cess oil is drawn into the air cleaner it provides an 

 uncontrolled fuel source and though the governor will 

 shut off the regular fuel supply, the engine will con- 

 tinue to run on the oil supply from the air cleaner 

 gaining uncontrollable speed and possibly causing ex- 

 tension damage. The engine can be stopped by blocking 



