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HeliCoil Installation Instructions - How to Install a HeliCoil Insert
Step 4:
The tang must be removed to allow full passage
of the bolt or screw through the HeliCoil insert.
Place the tang break-off tool squarely on the
tang of the HeliCoil insert and then give it a sharp
blow with a hammer.
For HeliCoil inserts with diameters bigger than
1/2 inch, 12mm, and for spark plug inserts, use
long nosed pliers to remove the tang. Hold the
tang with the pliers, bend it alternately in and out
until it comes free.
Step 3:
Place the HeliCoil insert onto the mandrel
of the HeliCoil installation tool. Place the
HeliCoil installation tool over the hole and
wind the HeliCoil insert into the hole until
the top coil is 1/4 to 1/2 turn below the
top surface.
Step 2:
Tap the hole using the HeliCoil tap. Tap the hole to
sufficient depth to accommodate the HeliCoil insert
length and the bolt or screw being used.
Step 1:
Drill out the damaged threads using the
drill size specified in the HeliCoil catalog.
Drill to a sufficient depth to accommodate
the HeliCoil insert length and the bolt or
screw being used.
HeliCoil Screw Thread Inserts
