Quantcast FIGURE 3-95.  Adjusting Valve Clearance

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ARMY TM 9-2815-255-24 AIR FORCE TO 38G1-95-2 MARINE CORPS TM 2815-24/4 f. Set No.  1 piston at TDC compression stroke and install timing pin (JDE81-4) in flywheel, refer to FIGURE 3-97. FIGURE 3-95.  Adjusting Valve Clearance g. Adjust valve clearance on No.  1 and 3 exhaust valves and No.  1 and 2 intake valves, refer to FIGURE 3-96. h. Turn crankshaft 360 degrees so that No.  4 piston is at TDC compression stroke and reinsert timing pin. i. Adjust valve clearance on No.  2 and 4 exhaust valves and No.  3 and 4 intake valves. FIGURE 3-96.  Checking Valve Clearance 3-32.2.  Measure Valve Lift. Measuring valve lift can give an indication of excess wear on cam lobes, followers, and/or pushrods. CAUTION For  a  more  accurate  measurement,  it  is  recommended  that  valve  lift  be  measured  at  0.00  inch (0.00 mm) rocker arm-to-valve tip clearance. a. Remove valve cover, refer to paragraph 3-31.1. b. Using center bolt on harmonic balancer, rotate crankshaft clockwise and observe No. 1 pushrods.  When both pushrods  can  be  rotated  freely  engine  is  on  compression  stroke.    Continue  to  rotate  engine  until  timing  pin (JDE81-4) can be installed in flywheel, refer to FIGURE 3-97. 3-131


 


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