Item Procedure Lube Page Every 500 Service Meter Units (15) Engine Crankcase(2) Naturally Aspirated engines-Change CD 50 oil and filter Clean the engine breather. (16)    Fan Bearing Lubricate 1 fitting MPG 50 (16A) Fuel System Clean primary fuel filter and change final 50 Sleeve Metering System fuel filter. New Scroll Fuel System Every 1000 Service Meter Units (17) Woodward PSG Governor Lubricate 2 fittings MPG 51 Synchronizing Motor Oil CD 51 (18)_Shutoff Controls Have operation checked by Caterpillar dealer 51 (19)    Tachometer Drive Lubricate 1 fitting MPG 52 Every 2000 Service Meter Units (20) Engine Valve Lash Measure-Adjust if necessary Ob- 53 serve rotation of valves with engine idling. (21)    Cooling System Change antifreeze solution 57 (1) Service   intervals   may   be   shortened   in   dusty operating   condi   tions.      I   the   exhaust   smoke and/or  loss  of  power  continues    after  servicing the air cleaner, discard that element and in stall a  new  element.    Install  a  new  element  at  least once a  year. (2) The percentage of sulfur in the fuel will affect the engine  oil  recommendations.  If  the  fuel  has  over 0.5% sulfur content, the CD engine oil must have a  TBN  of  20  times  the  percent  age  of  fuel  sulfur (TBN     as     measured     by     the     ASTM     D-2896 method).      If   the   sulfur   content   is   greater   than 1.5%,  consult  your  Caterpillar  dealer  for  correct engine oil recommendations. 27