Electric Sets Without Supports at the Flywheel Housing (cont)

Electric Sets Without Supports at the Flywheel Housing

TM-55-1930-209-14P-9-4 Water Purification Barges (NSN 1930-01-234-2165) Electric Power System Manual
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SR 4 GENERATOR DISASSEMBLY AND ASSEMBLY clearance over the entire length of the supports. This is especially important on generators with long supports (10). Install shims as necessary until all of the mounting surfaces are fiat and parallel. View A-A. e. Tighten all bolts that fasten the engine and generator supports to the base to one-half of their final torque. Loosen all bolts (7), and check the gap (D) between the generator and the flywheel housing at location (E), (F), (G) and (H). Location (E) must always be at the top. Make a record of each measurement. f. If the gap at location (E) is larger than the gap at location (G) by more than .005 in. (0.13 mm), install an equal amount of shims under each generator support as necessary. If the gap at location (G) is larger than the gap at location (E) by more than .005 in. (0.13 mm), remove an equal amount of shims from under each generator support as necessary. After a correction has been made to shim thickness, tighten the generator support as necessary. After a correction has been made to shim thickness, tighten the generator support bolts to one-half of their final torque and again check the gap at location (E) and (G). Use this procedure again and again until the difference in gap measurements is .005 in. (0.13 mm) or less. g. If the gap at location (F) is larger than the gap at location (H) by more than .005 in. (0.13 mm), loosen the bolts in the generator supports and move the rear of the generator to the right. If the gap at location (H) is larger than the gap at location (F) by more than .005 in. (0.13 mm). loosen the bolts in the generator supports and move the rear of the generator to the left. Do this procedure again and again until the difference in gap measurements is .005 in. (0.13 mm) or less. Tighten bolts (2) to their final torque. h. Install a dial indicator on base (12) with the indicator tip next to a support mounting bolt. Tighten this bolt to its final torque, and at the same time check the indicator. If there is more than .005 in. (0.13 mm) of indicator movement, the shim thickness is incorrect under that bolt. Install shims as necessary. Do this procedure again and again until all engine and generator support-mounting bolts have been tightened to their final torque and support deflection is within specification. 142

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