For Mounting Intermediate Flange and Transmission

Conventional tools
Heli-Coil tap M 10 Item No. 0140 0100104

Heli-Coil threaded insert M 10 Standard item No. 0130 0100020 e.g. D-4800 Bielefeld 14

Heli-Coil hand installer M 10 Item No. 0150 0410000-1


NOTE: Stripped threads for intermediate flange or transmission attachment must be replaced with Heli-Coil threaded inserts standard, item No. 0130 0100020, with a length equivalent to twice the diameter of the bolts (11 threads).

If stripped threads are not accessible with removed transmission or intermediate flange because of limited space, the engine must be removed.

Reconditioning







1 Drill core hole approx. 27 mm deep using an HSS spiral drill of 10 mm dia.

The core hole diameter should be a minimum of 10 mm and a maximum of 10.3 mm.

2 Blow out chips.







3 Cut Heli-Coil installation thread approx. 25 mm deep using Heli-Coil tap M 10 (outside diameter 12.0 mm), item No. 0140 0100104. To do so, lubricate tap with honing oil.
4 Blow out chips.







5 Screw in oiled Heli-Coil M 10 threaded insert standard. Art. No. 0130 01000020, with the M 10 hand installation tool, Art. No. 0150 0410000-1.

! The top thread must be positioned about 2 mm below the mating surface.

6 Break off driving stud of Heli-Coil threaded insert with a drift.
7 Screw in a bolt to check whether inserted thread has offset windings and whether thread turns easily.

The insertion depth should be about 23 mm.