31 00 ... Notes On Repairing Threads

IMPORTANT: Install Heli-coil thread inserts so that they are flush with the original thread.

NOTE: Damaged threads in engine carrier may be repaired with Heli-coil thread inserts. Comply with the procedure described in the example.

Fig 1: Identifying Damaged Heli-coil Thread

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Procedure:

Create a clean core hole; if necessary, drill out screw remnants

Fig 2: Drilling Core Hole
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Create locating thread for Heli-coil thread insert

Fig 3: Locating Thread For Heli-coil Thread
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Pick out Heli-coil thread insert in accordance with the table and screw into the locating thread until flush with the original thread

Fig 4: Identifying Heli-coil Thread
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Break drive pin and remove

Fig 5: Identifying Drive Pin
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