31 00... Notes on repairing threads

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

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

Fig 1: Identifying Helicoil

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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 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 below and screw into the locating thread until flush with the original thread

Fig 4: Inserting Helicoil Thread
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Break drive pin and remove

Fig 5: Removing Brake Drive Pin
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Screw connection	Vehicle	Screw/bolt fastening point(s)	Helicoil thread insert
Front axle support to engine support	F01, F02, F03, F04, F07, F10, F11, F12, F13, F18	M12	M12x1.5x24
Front axle support to engine support	F25	M14	M14x1.5x28
Rear axle support to side member	F01, F02, F03, F04, F07, F10, F11, F12, F13, F18		M14x1.5x28
Rear axle support to side member	F25		M12x1.5x24
Support bearing screw connection, front axle	F25		M8x1, 25x16