Quantcast FIGURE 3-116.  Checking Valve Clearance

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ARMY TM 9-2815-256-24 AIR FORCE TO 38G1-96-2 MARINE CORPS TM 2815-24/5 FIGURE 3-116.  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 (JDE- 81-4) can be installed in flywheel, refer to FIGURE 3-117. FIGURE 3-117.  Installing Timing Pin c. Set rocker arm-to-valve tip clearance to 0.00 inch (0.00 mm) by turning adjustment nut clockwise until pushrod cannot be turned by hand for No.  1, 3, and 5 exhaust and No.  1, 2, and 4 intake valves, refer to FIGURE 3-116. 3-141


 


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