MTU — Repairing threaded bores with threaded inserts (Heli-Coil)
Repair & overhaul
From a MTU service manual covering: 12V2000, 12V2000M60, 12V2000M70, 12V2000M80, 12V2000M90, 12V2000M91, 16V2000, 16V2000M60, 16V2000M70, 16V2000M80, 16V2000M90, 16V2000M91. Check it applies to your exact model before use.
Applies to: MTU 16V2000
Procedure
- If necessary, remove thread insert with suitable removal tool from bore.
- Bore core hole with suitable twist drill – see table.
- Cut thread with special tapped bore.
- Do not countersink bore.
- Mount spindle and snout corresponding with thread.
- Insert thread insert into spindle; driver journal must be in groove.
- Mount installation tool on threaded hole and install insert without pressure.
- Insert 1/2 to 1 1/2 turns deeper than bore surface; remove driver journal.
Tools required
- Removal tool Amazon
- Twist drill Amazon
- Special tap Amazon
- Installation tool Amazon
- Screw shearer Amazon
- Pointed pliers Amazon
Tool links are Amazon searches (affiliate links); manufacturer special tools may only be available from a dealer.
Full service-parts list: MTU 16V2000 →
Source: MTU service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.