Tag: Helicoil repair kit

Tips for DIY Heli Coil Thread Repair

Are you the owner of an older car? If so, damaged threads could be a problem. All professional mechanics can handle the issue for you but heli coil thread repairs can also happen at home. You will need to get a heli coil repair kit and you will simply have to follow a number of steps.

You should get started by purchasing the right equipment for the DIY heli coil thread repair.

BER2538Items needed

Use this checklist to identify all the items needed for the repair.

Get the repair kit first because it is the most important piece of equipment. Additionally, you will have to buy or find a two-handed tap wrench, the specified drill bit, a thread gauge, a hammer, a round punch and needle-nosed pliers. The kit itself consists of several components like a drill, stainless steel wire coil, a tap and an installation tool.

Measure the Size of the Old Bolt

The first thing you need to do is measure the size of the original bolt. Use the head of the wrench and match it to the bolt for an accurate measurement. Get your thread gauges set and identify the matching piece. This is it – you have found the correct bolt size. The heli coil kit contains a matching tap. Base the decision on the bolt size that you just figured out. The threads are going to be the same but the size of the new diameter is going to be a bit bigger than the old one.

The Insertion Process

Get the right tap bit and start drilling a hole. If the bolt angle is critical, you may consider using a drill press to make more accurate and precise adjustments.

After drilling the hole, you will need the two-handed tap wrench. Put the tap in the wrench. Place it in the hole you have already drilled and hold it at 90 degrees to the surface. After positioning it correctly, turn the two-handed tap wrench clockwise for half a turn. You need to do that in order to start the thread. Next, turn the wrench anti-clockwise for a third of a turn to break the ribbon of metal. Change the direction and rotate clockwise for half a turn. Finally, to break the swarf, you will have to turn the wrench anti-clockwise once again. Maintain the pattern until the new thread is fully cut.

Time for the Heli Coil InsertUS2527

The thread is finally cut and you can now work on to the heli coil insert. Get the thread driver that is found in the heli coil kit and screw the heli coil insert into its end. The angle between the wire and the end of the insert should be 90 degrees. This will form a break-off tab that will keep the insert immobile. The end of the insert should be positioned in the newly threaded hole. You will need just three to four turns, in order to screw it in. Make sure that everything looks perfect before snapping the 90-degree wire off. The easiest way to complete that step involves a hammer.

This is the final step of the heli coil thread repair process. Test fit into the heli coil insert and you will be done.

Author – Tony Heywood

Tony Heywood

Tony Heywood is a ‘Retail Troubleshooter’ with 40 years experience in the retail industry, specialising in e-commerce over the last decade. He has his own consultancy firm and is MD of  ’e sell it’, an on-line store selling tools and auto-care products worldwide.

For tools & auto-care products at trade prices, please visit: www.esellit.com

Or call: 020 8201 0588


4 Top Tips for Proper Heli Coil Thread Repair

 

Damaged threads are a common problem among older vehicle models. Instead of taking it to a professional mechanic, many people prefer to do a thread repair at home with a Helicoil repair kit. The easiest way to do that involves a heli coil insert.

Are you interested in learning how to repair a damaged thread with a heli coil insert? Follow these tips for professional results.

1.       Get the Right EquipmentUS2506

Before you attempt to do the repair, make sure that you have everything necessary.

There are certain things you will have to purchase in advance. A heli coil thread repair kit is the first and the most important piece. You will also need a two-handed tap wrench, thread gauge, the specified drill bit, a hammer, needle-nosed pliers and a round punch.

Heli coil thread kits consist of a high-speed steel drill, an installation tool, stainless steel wire coil and a tap. There could be some variations so read about the contents of the kit before you buy.

2.       Do Some Measuring

Begin by identifying the original bolt’s size. You can do that easily by matching the head to a wrench. Once you have made sure that you have the correct size, use the set of thread gauges to find the matching piece and identify the bolt size.

Now that you know the size of the original bolt, you can select a tap from the heli coil kit. Keep in mind that the new diameter is going to be slightly bigger than the size of the bolt but the threads are going to be the same.

3.       Drill and Insert

Use the correct tap bit to drill out a hole. A drill press can be used to make more precise adjustments, in case the bolt angle is critical.

Next, use the two-handed tap wrench. Insert the tap into it and place it in the hole you just drilled. Hold the two-handed tap wrench at a right angle to the surface. Turn the wrench clockwise just half a turn. It would be sufficient to start the thread.

Once you accomplish that, turn the two-handed tap wrench anticlockwise just a third. It will break the ribbon of metal. Now you should rotate clockwise once again, half a turn. Next, reverse the direction and rotate anticlockwise to break the swarf. The pattern should remain the same until you manage to fully cut the new thread.

4.       Use the Heli Coil InsertUS2527A

Now that the new thread is cut, you are ready to pick the right heli coil insert. The kit contains a matching thread driver. Get the heli coil insert and screw it onto the end of the thread driver.

Keep the wire at the end of the insert at a 90-degree angle. It forms a break-off tab that prevents the insert from moving in the thread driver. Place the end of the insert into the newly made and threaded hole. Screw it in. Three to four turns should be sufficient. Make sure that it binds. Once the heli coil has been screwed in, snap the 90-degree wire off. Use a hammer to do that.

This is it! Screw the original bolt in. Test fit into the heli coil insert to make sure that you have done a good job.

 

 

Author – Tony Heywood

Tony Heywood

Tony Heywood is a ‘Retail Troubleshooter’ with 40 years experience in the retail industry, specialising in e-commerce over the last decade. He has his own consultancy firm and is MD of  ‘e sell it’, an on-line store selling tools and auto-care products worldwide.

For tools & auto-care products at trade prices, please visit: www.esellit.com

Or call: 020 8201 0588


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