Quantcast Table 4-5.  Cylinder Block Top Deck Specifications

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ARMY TM 9-2815-259-24 AIR FORCE TO 38G1-125-2 MARINE CORPS 09249A/09246A-24 4-78 (c)     Use compressed air to remove all loose foreign material from cylinders and top deck of cylinder block. (d)     Remove camshaft followers from cylinder block and wash in solvent.  Lubricate with clean engine oil and install in same bore. (e)     Measure cylinder block top deck flatness using precision straightedge (DO5012ST) and feeler gauge.  Compare measurements with specifications given in Table 4-5.  If flatness is not within specifications notify next higher maintenance level. (3)     Inspect fuel supply pump push rod and bore as follows: (a)     Measure outer diameter of fuel transfer pump push rod with outer diameter micrometer.   Fuel supply pump push rod outer diameter should be 0.3894 - 0.3904 in. (9.891 - 9.917 mm).  Replace fuel supply pump push rod if not within specifications. (b)     Check crown on fuel supply pump push rod ends.  If crown is flat or concave, replace fuel supply pump push rod and notify next higher maintenance level to check camshaft lobe for wear. (c)     Measure inner diameter of fuel supply pump push rod bore with inner diameter micrometer.  Fuel supply pump push rod bore should be 0.3937 - 0.3957 in. (9.891 - 9.917 mm).  Repair or replace block as necessary. Table 4-5.  Cylinder Block Top Deck Specifications Item Specification Maximum Acceptable Out-of-Flat: Entire Length or Width 0.003 in. (0.025 mm) Any 5.90 in. (150 mm) Length 0.001 in. (0.025 mm) d.      Installation. (1)     Remove all covering installed during step a (19). (2)     Ensure all old gasket material is removed from gasket surfaces. (3)     Lubricate fuel supply pump push rod with clean engine oil and install in same orientation as removed from in step a. (4)     Install two guide studs in cylinder block at locating holes 16 and 17 shown in Figure 4-52. CAUTION Thoroughly inspect new cylinder head gasket for possible manufacturing imperfections.  Do not install any gasket that does not pass inspection.   Failure to comply could result in cylinder head gasket failure.


 


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