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CHART NO.  15 EXCESSIVE FUEL CONSUMPTION (cont)
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TM-5-4210-230-14P-1 Aerial Ladder Fire Fighting Truck Manual
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CHART NO. 16 EXCESSIVE OIL CONSUMPTION (cont)
ENGINE DIVISION SERVICE MANUAL TM 5-4210-230-14&P-1 CHART NO. 16 EXCESSIVE OIL CONSUMPTION Verify the Condition The  most  common  cause  of  oil  loss  is  leakage.  To verify   an   excessive   oil   consumption   complaint,   it   is necessary  that  a  thorough  inspection  be  made  to  insure that leakage does not exist.   The  following  steps  should be    followed    to    verify    an    excessive    oil    consumption complaint. A. Steam clean the engine (if necessary) to remove accumulated dirt and/or oil. B. Drain engine oil and change the oil filter. C. Fill  the  crankcase  with  the  specified  amount  of the recommended grade of oil.  (Check to be sure the correct dipstick has been installed.  ) D. Check  positive  crankcase  ventilation  system  for excessive oil pullover into air cleaner. E. Drive  the  vehicle  under  normal  conditions  until the  engine  is  at  normal  operating  temperature. With the vehicle parked on a level surface, place a    clean    paper    under    the    engine    (to    aid    in detecting leakage). F. Shut off engine and check for leakage at: 1. Valve rocker arm cover gaskets. 2. Oil pan gasket. 3. Cylinder block front cover gasket. 4. Cylinder   block-to-fuel   pump   gasket   and fuel pump air vent. 5. Intake    manifold    seals    or    valley    cover gasket. 6. Crankshaft seals. 7. Distributor housing gasket. 8. Oil filter. 9. Oil pressure sending unit. 10. Oil Cooler. G. When  all  causes  of  leakage  (if  any)  have  been repaired, check the oil level and adjust oil level to full mark on dipstick. H. Record     the     odometer     reading.      Have the customer operate the engine for the approximate number  of  miles  indicated  by  the  complaint  and then return it to you for examination. I. When   customer   returns   the   vehicle,   verify   the odometer    reading.        Check    the    oil    level    and reinspect the engine for signs of oil leakage. J. Add  a  measured  amount  of  oil  as  necessary  to bring the oil level to the full mark. K. If  oil  consumption  is  not  within  specified  limits (400-500    miles    per    quart),    proceed    with    oil consumption diagnosis as outlined below. NOTE:    A  new  engine  may  require  up  to  6000 miles   of   operation   in   order   to   properly   seat (break  in)  the  piston  rings .   For  this  reason,  the engine  should  not  be  condemned  as  long  as  oil economy is improving with mileage accumulation.   If oil economy ceases to improve with    mileage    accumulation,    corrective    action should be taken. CGES-215  Page 30 PRINTED IN UNITED STATES OF AMERICA

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