Crankshaft pulley bolt is the most stubborn, highly torqued and perhaps the most challenging bolt to remove in a car. These bolts can have a rating of 400700 lbft or more especially if they're rusty or have never been removed.

Here are the #ᴬᴰlinks to tools, parts and accessories you may need to perform this repair:

1. https://amzn.to/489Khpd | DEWALT 20V MAX XR 1/2" High Torque Impact Wrench, Cordless, Detent Anvil, Tool Only (DCF899B)
2. https://amzn.to/45MSLRE | DEWALT 20V MAX Cordless Impact Wrench Kit, 20V MAX, 1/2" Hog Ring With 4Mode Speed, Includes Battery, Charger and Kit Bag (DCF900P1)
3. https://amzn.to/3PguVqq | Milwaukee 296220 M18 18V Fuel 1/2" Midtorque Impact Wrench with Friction Ring
4. https://amzn.to/3P5keXK | AVID POWER Cordless Impact Wrench, 1/2 Impact Gun w/Max Torque 330 ft lbs (450N.m), Power Impact Wrenches w/ 3.0A Liion Battery, 4 Pcs Impact Sockets and 1 Hour Fast Charger, 20V Impact Driver Kit
5. https://amzn.to/45O3P0Y | 20V 370 Ftlbs Brushless Impact Wrench Kit, 1/2 Inch Cordless Electric Impact Gun, High Torque 3,400 IPM Impact Driver with 6 Pcs Drive Impact Sockets, 2.0Ah Battery, Fast Charger, and Tools Bag

Or Click on Amazon link here and search for what you need: https://amzn.to/3xIOsqg

Most auto repair shops or garages use air impact wrench to remove these bolts. Luckily for us, the weekend warrior or backyard mechanics, manufacturers of cordless impact wrenches have recently offered impact wrench with extremely high breakaway torque, thus eliminating the need to have air compressor and/or the need to haul the heavy compressor or the hoses.

This video is NOT about demonstrating how to remove the crank pulley (also known as the harmonic balancer) bolt without any special tools. It is actually to highlight one of the best and most powerful cordless impact wrench on the market today.

This Dewalt DCF899 impact wrench has a heavyduty impact mechanism with a max torque at 700 ftlbs and a max breakaway torque at 1,200 ftlbs. A 3speed selector switch allows for application specific torque/drive control. A bright LED work light with a 20 second delay for low light situations.

Alright, so that you were able to somehow managed to get the crankshaft bolt out (whether using this tools or any other methods), how do you tighten the bolt back to factory specifications during the installation?

The tool that you'll need is torquelimiting extension bar. In this video we showcased Pittsburgh 10 Piece 1/2 inch Torque Limiting Extension Bar Set with Carrying Case, Color Coded and Engraved with ft. lb. settings (65150ftlb). Use these torque extension bars to prevent overtightening of lug nuts. Designed for use with standard or thinwall sockets, each torque extension bar is colorcoded and engraved with torque range for quick reference.

As far as impact drivers are concerned, there are many other brands out there such as Milwaukee, Eartquake Extreme XT, Bosch, Ingersol Rand, Craftsman, Hitachi, Rockwell and the more expensive SnapOn. But there was a video on youtube that showed how the Dewalt DCF899 was able to remove a lugnut from an 18wheeler.

The harmonic balancer (also called “crank pulley damper”), connected to the crankshaft of an engine, reduces engine vibration and serves as a pulley for the drive belts. The balancer or “damper” is composed of two elements: a mass and an energydissipating element.

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You can watch all of Aiman's auto repair videos in the following playlist:    • How To Remove Alternator Hyundai Sona...  

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Recording Date: June 7, 2017
Video URL:    • How To Remove Stubborn Crankshaft Pul...