TM 9-6115-604-34NAVFAC P-8-633-34(10)See Figure 24, detail A. Install all the hexagon head capscrews and lockwashers securing the generatoradapter to the engine flywheel housing. Torque the capscrews on the lower half of the adapter to 50pound-feet (68 newton-meters). Leave the upper half of the bolt circle finger tight(11)Using feeler gages, check the gap between the adapter and flywheel housing at the top of the ring. If thegap is greater than 0.015 inch (0.38 mm), alternately torque to 50 pound-feet (68 newton-meters) the boltson the top half of the ring, starting at the points farthest from 12 o'clock position until a maximum gap of0.015 inch (0.38 mm) is obtained. If a gap of 0.015 inch (0.38 mm) cannot be achieved, the generatoradapter ring or drive plates may not be properly aligned and seated. Remove all hexagon head capscrewsand lockwashers securing generator adapter to engine flywheel housing, and repeat procedures describedin paragraph 2-1 5b(22) through (25).(12)Raise both engine and generator assembly and remove the 1/2 inch (13 mm) spacer blocks from beneaththe rear engine supports (6, Figure 2-5). Lower the engine and generator assembly to the skid basemounting pads. Relieve all crane and sling tension.(13)Using feeler gages, check the gap at the 12 o'clock position of the adapter to flywheel housing matingarea. If the gap is decreased to a dimension greater than 0 but less than 0.015 inch (0.38 mm), properalignment has been attained and proceed directly to step (18), below. If the gap is 0, longitudinal preloadis assumed and shimming will be required between the rear engine supports (6) and the skid base.Proceed as follows:(a) Raise the engine and generator assemblies and install 0.015 inch (0.38 mm) shims (19) betweenboth rear engine supports (6) and the skid base. Lower the engine and generator assemblies andcheck the adapter to flywheel housing gap as described in step (13), above.(b) As require, shim both rear engine supports in equal increments of 0.005 inch (0.127 mm) until amaximum gap of 0.015 inch (0.38 mm) is attained.(14) Using feeler gages, check the two rear engine supports and four generator mounting pads for clearance tothe slid base. If clearance is 0 to 0.010 inches (0.25 mm), proceed directly to step (15), below. If clearanceis greater than 0.010 inches (0.25 mm), shims must be installed to reduce the clearance to an acceptablelimit of less than 0.010 inches (0.25 mm). Proceed as follows:NOTEThe shimming procedure will require the raising and lowering of engine and generatorassemblies until acceptable clearance is attained.(a) Install shim (19, Figure 2-5) beneath rear engine supports until acceptable clearance is attained.Shim equally at both mounts.(b) See Figure 2-4, detail D. Add shims beneath generator feet until acceptable clearance is attained.Shim equally at all four mounts.(15)After attaining acceptable clearances, remove lifting slings for both engine and generator assemblies.(16)Install lockwashers (8, Figure 2-5) and hexagonal nuts (9) securing rear engine mounts to skid base.(17) Torque hexagonal nuts (9 and 13) and capscrews (7 and 10) to 200 pound-feet (271 newton-meters) on both rear engine mounts and front engine support(18) See Figure 24. Install hexagon head capscrews, hexagonal nuts, and lockwashers to secure the generator to the skid base and torque in two stages, as follows: (a) Beginning with the two rear feet then the two front feet, torque to 600 pound-feet (813 newton-meters).(b) Using feeler gage, check the gap at the top of the adapter to engine mating surface. if the gap is notwithin the acceptable limit of 0 to 0.015 inch (0.38 mm), the shimming procedure must be repeateduntil an acceptable limit is attained. Add shims beneath rear engine supports or generator mountingfeet as required.(c) If the gap is within the acceptable limit of 0 to 0.015 inch (0.38 mm), apply the final torque of 850pound-feet (1156 newton-meters) to the hexagon head capscrews securing the generator mountingfeet.2-43
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