Is the crankshaft pulley bolt reverse thread?
The ‘crankshaft pulley bolt’ is regular threads, it’s just tight as hell and takes a special tool to hold the pulley so bolt can be removed.!
How do you remove a crankshaft pulley?
How to Remove a Crankshaft Pulley
- Position the puller in front of the pulley.
- Install the puller-to-pulley bolts.
- Using a breaker bar and socket, tighten the central puller bolt until the pulley slides off the crankshaft.
What happens if the crankshaft pulley breaks?
When a crankshaft pulley fails (or the timing belt due to a badly maintained crankshaft pulley), the timing of the engine is completely thrown off. Even a rotation or movement of a few millimetres can start to cause problems in a system so precise.
Which way do you turn a crankshaft?
The only way you should be turning it over from the crankshaft is clockwise, and crankshaft counterclockwise if turning over from camshaft, you don’t really want the cam chain pulled tight against the tensioner which happens when you turn your engine over backwards from the crank.
How do you remove a crank pulley without a puller?
There is a way to do it. You put a wrench on the pulley bolt and block the other end against the floor or the frame. Then you use the starter motor to turn the engine (DO NOT START IT, JUST TURN IT) for at most one or two revolutions of the crank. Just enough to break the bolt loose.
How to remove a stuck crank pulley bolt without impact?
1. Loop the old accessory belt around the crank pulley. 2. Run both sides of the belt over an available accessory pulley. 3. Anchor the other end of the loop on a third pulley. 4. Rotate the crank pulley and take up the belt slack by letting the crank pulley end pinch the belt under itself.
What happens when you pull the pulley on a crankshaft?
The crankshaft pulley bolt is notorious for holding fast despite using powerful tools and long leverage bars to remove it. Furthermore, the pulley tends to spin and spin as you try to bear down on the bolt head. Once you have this bolt freed, you can move onto the rest of the removal, rebuild and installation process unhindered.
How to loosen a crankshaft pulley harmonic balancer bolt?
How to loosen a difficult crankshaft pulley harmonic balancer bolt. The first method uses the power of the starter motor, and the second method uses the force of the rolling vehicle. Be sure to disconnect the main coil wire before attempting, because you DO NOT want the car to start when doing this!
Can a crank pulley bolt damage a flywheel?
Get a proper crank locking tool that fits in place of the starter, car in gear, someone standing on the brakes and a huge breaker bar+extension handle (scaffold bar). Thanks for the replies. Cars an e46 BMW. I’ve heard that locking at the flywheel can damage the flywheel, not sure if that’s true?