21 replies to this topic

[jamieburke17]

Its my first engine build and im stripping my old engine to get bits for the new engine, im trying to remove my flywheel/clutch its a verto and ive got a flywheel puller and its just not working, ive removed the center bolt, and the keeway and tightend the puller up untill it bends it, what am i dooing wrong? im guessing its something obvious!

[Blatherskite]

First, search the forum - its a common problem.

Otherwise, with the puller tight, try shocking the flywheel by banging it with a hammer (don't dent it), put a bar through the starter hole and try to knock it off, try heat / freezing spray, and leave the puller on & tight when you go and do something else. If the engine is placed so the flywheel flying off will cause damage to something, either put the centre bolt in again (loosely) or arrange a catcher. My 850 flywheel shot off across the lockup and vanished under the car...

[jamieburke17]

first thing i did, cant seem to find much about it,  tried giving it a shock, ive spent most of the day hitting it haha, ill try heat and leave the puller on overnight, so nothing but stiffness is holding it on? 

[Tamworthbay]

Surprised you couldn't find anything, it comes up pretty much every week and links in on a search:

https://www.google.c...lywheel removal

[Cooperman]

I had one on a 1997 MPI which took me almost 2 weeks to remove. I have a really big flywheel puller ad I just kept tightening it a bit every day and hitting the end, but still it wouldn't come off.

In the end I heated it with a blowtorch, immediately quenched it with cold water, then froze it using plumbers Arctic Freeze, then hit it some more, then heated it and repeated the process. I was about a day away from deciding to angle grind it off when finally it just 'popped' off.

Sometimes they can be a b****r!

[jamieburke17]

haha, i bet you were squeeling when it came of! ill try a kettle of hot water over it and a big hammer, thanks for all the replies!

[Cooperman]

A kettle of hot water won't raise the temp of the flywheel boss on the crankshaft enough. You need a blow-torch on it at least, then rapid quenching with cold water to give it any sort of thermal shock.

[Spider]

If they weren't done up tight enough in the first place, or the bolt worked loose the flywheel can 'fret' on to the tail of the crank, it's kinda like 'bird-dropping welds' and that does make it hard to get them off, especially if it's a steel flywheel.

 

Brute Force and Ignorance!!  Show it who's boss!! 

[AndyR]

If you are using the "cheap" Laser type puller, i would highly recommend thoroughly greasing the threads.  The main bolt has a black oxide coating that actually locks up under load.  I used three days with the above methods, i had stupidly put it together ungreased.  When i finally sat back an looked at what i had done, i pulled it off, greased it up and it popped off like it was nothing.

 

Andy 

[Blatherskite]

If you are using the "cheap" Laser type puller, i would highly recommend thoroughly greasing the threads.  The main bolt has a black oxide coating that actually locks up under load.  I used three days with the above methods, i had stupidly put it together ungreased.  When i finally sat back an looked at what i had done, i pulled it off, greased it up and it popped off like it was nothing.
 
Andy

Thanks for the heads-up, Andy. I have a flywheel to pull over sommerferie, hopefully without taking the engine out.

Edited by Blatherskite, 14 June 2015 - 08:42 AM.

[AndyR]

 

If you are using the "cheap" Laser type puller, i would highly recommend thoroughly greasing the threads.  The main bolt has a black oxide coating that actually locks up under load.  I used three days with the above methods, i had stupidly put it together ungreased.  When i finally sat back an looked at what i had done, i pulled it off, greased it up and it popped off like it was nothing.
 
Andy

Thanks for the heads-up, Andy. I have a flywheel to pull over sommerferie, hopefully without taking the engine out.

 

 

Lykke til!

[Spider]

Here, just removed one this morning, engine out of car (but can be done in car with this puller), and in the engine stand. I have the Flywheel uppermost - you'll see why!

 

 

You can see how tight it is on the taper by the way it popped off.

 

How easy is that!

[Mini Manannán]

What's that puller Chris?  One-handed easy action!

[Tommyboy12]

I wish the one I worked on came off that easily! I ended up taking a grinder to it. Luckily I only want the block and gearbox.

[Gr4h4m]

Always remember to take some time and ensure that the puller is square to the flywheel. With the cheap ones the washers on the bolts can give and pul it out of sync. I rotate the assembly with the puller attached to make sure it's square.

If you put a couple of bolts back in the wok with large washers on it will stop the flywheel trying to take your foot off or thump your inner wing😀👍