31 00... Notes on repairing threads

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

NOTE: Damaged threads on the engine support may be repaired with Heli-coil thread inserts. Follow the procedure described in the example below.

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 Clean Core Hole
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Create locating thread for Heli-coil thread insert

Fig 3: Drilling Thread For Heli-coil Thread Insert
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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: Drilling Heli-coil Thread Into Thread
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Break drive pin and remove

Fig 5: Inserting Breaking Drive Pin
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