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ARMY TM 9-2815-255-24 AIR FORCE TO 38G1-95-2 MARINE CORPS TM 2815-24/4 i. Pull camshaft (3) straight up, out of cylinder block Remove thrust plate (4). j. If necessary, remove gear (5) from camshaft (3) using an arbor press.  Remove key (6). 3-40.2.  Inspect and Measure. a. Use a dial indicator and measure camshaft end play, refer to FIGURE 3-109.  New camshaft end play is 0.002 to 0.009 inch (0.05 to 0.23 mm).  Maximum allowable end play is 0.015 inch (0.38 mm). NOTE If end play is excessive, check thrust plate thickness using a new thrust plate and a feeler gage after camshaft is removed, refer to step c.  If camshaft end play is correct, measure timing gear backlash. FIGURE 3-109.  Measuring Camshaft End Play b. Clean and inspect camshaft and thrust plate as follows: WARNING Cleaning solvent Is flammable and toxic to eyes, skin, and respiratory tract Skin/eye protection required.  Avoid repeated/prolonged contact.  Good general ventilation Is normally adequate. WARNING Compressed air used for cleaning can create airborne particles that may enter the eyes.  Pressure will not exceed 30 psig (207 kPa).  Eye protection required. (1) Clean camshaft and thrust plate in dry cleaning solvent (P-680).  Dry with compressed air. (2) Visually  inspect  camshaft  lobes  and  journals  for  wear  or  damage.    Replace  as  necessary.    New  cam followers  can  be  used  with  old  camshaft  (if  camshaft  is  serviceable).    However,  do  not  reuse  old  cam followers with a new camshaft. 3-160


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