31 00... Notes on repairing threads

IMPORTANT: Install Helicoil thread inserts so that they are flush with the original thread.

NOTE: Damaged threads in engine support may be repaired with Helicoil thread inserts. Comply with the procedure described in the example.

Fig 1: Identifying Damaged Threads

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Procedure:

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

Fig 2: Drilling Hole Core For Helicoil Thread Insert
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Create locating thread for Helicoil thread insert

Fig 3: Creating Locating Thread For Helicoil Thread Insert
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Pick out Helicoil thread insert in accordance with the TABLE and screw into the locating thread until flush with the original thread

Fig 4: Inserting Helicoil Thread Into Locating Thread
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Break drive pin and remove

Fig 5: Removing Drive Pin
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