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 carrier may be repaired with Helicoil thread inserts. Comply with the procedure described in the example.

Fig 1: Identifying Helicoil Thread

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Procedure:

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

Fig 2: Drilling Out Screw
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Create locating thread for Helicoil thread insert

Fig 3: Creating 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: Identifying Helicoil Thread
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Break drive pin and remove

Fig 5: Removing Drive Pin
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