﻿GET_GEVOMechL2_09_01_01_52 - STEP-BY-STEP Cont Screen
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17. Install the adjusted shim packs.

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<b>Note:</b> The shape of the shims only allows them to be inserted in one direction between the bolts of the top mounting flanges.

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18. Remove the jack bolt.

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19. Using a ¾-inch air impact wrench, tighten the four alternator top flange mounting bolts evenly (the inner top flange bolts first followed by the outer top flange bolts), while alternating sides.

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<b>Caution:</b> Top flange torque values influence web deflection readings.

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Never use an impact wrench as a substitute for a torque wrench.

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Consistency in dial indicator readings depends on consistent alternator top flange mounting bolt tightness.

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<b>Caution:</b> Setting a desired torque using the 0 - 1000 lb.-ft. (0 - 1356 Nm), 1-inch Square Drive Torque Wrench (TESCO T18250) is unique compared to most other torque wrenches.

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Ensure the correct dial face scale is used.

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20. Torque the four alternator top flange mounting bolts (the inner top flange bolts first followed by the outer top flange bolts) to 650 ± 25 lb.-ft. (881 ± 34 Nm) and repeat this torque pattern to confirm the proper torque.

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21. Until TIR is less than 0.0005 inches (0.0127 mm), repeat the above-mentioned steps of rocking the gauge at position A (until the needle stops moving before zeroing the gauge), re-measuring web deflection, recalculating TIR, and adjusting the shim pack thickness.
