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shortstop20
Well-known member
No, you can't use your clutch bolt because it threads into the crank, you need a bolt that threads into the clutch.
Help pulling primary clutch
- Thread starter HighmarkMiked
- Start date
Clutch puller
You will not be able to use the screw that holds the clutch to the crank. A puller works by threading into the clutch halfway through it on a larger diameter thread. It continues threading until it bottoms out on the crank and pushes the clutch off of the tapered shaft. This is where you would use water, grease, etc.... to remove a stubborn clutch. If your clutch is removed somewhat regularly to clean, replace spring, rollers, etc.., it will come off more easily.
Hope this helps.
You will not be able to use the screw that holds the clutch to the crank. A puller works by threading into the clutch halfway through it on a larger diameter thread. It continues threading until it bottoms out on the crank and pushes the clutch off of the tapered shaft. This is where you would use water, grease, etc.... to remove a stubborn clutch. If your clutch is removed somewhat regularly to clean, replace spring, rollers, etc.., it will come off more easily.
Hope this helps.
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Arctic Thunder
Well-known member
Exactly.
You will never Push the clutch off the crank with the bolt that holds the clutch onto the crank. You must have a bolt/puller that uses the threads in the clutch to push against the end of the crank to push the clutch off the crank.
Personally I like to put the puller in, tighten to about 100ft/lb. Use a propane or map gas torch and heat the center of the clutch. putting as much heat on the fixed end of the center. roll the clutch/crank a couple times to ensure even heat and then gently hit the end of the puller with a soft blow hammer. If it doesn't move, add some more heat. The trick is heating the clutch faster than the crank. If you have tried this and it won't go you will have let it cool all the way down to try it again.
Works on my stubborn 900 clutchs every time.
Thunder
Doesn't anybody use spanners with the pullers anymore? I have done it this way for over 20 yrs and have yet to find a clutch that can't be pulled with just a 1/2" ratchet. No impact, no heat, no fluids just anti-sieze on the puller threads and the tip of the puller.
Yes, the $3 hardware store bolt trick works with water/grease/oil/brake fluid/whatever. Of course whatever you put in there splashes a bit when it breaks loose. And last I checked brake fluid eats paint...so I personally think that particular liquid is a terrible idea unless you don't mind causing some permanant cosmetic damage to any nearby painted part that hapens to get splashed.
Water is a heckuva lot easier to clean up because you don't have to. It just disappears. But the threads need to be sealed very tightly because the water flows so easily it can seep past the threads and you lose some force. With an impact wrench that's fast enough this doesn't matter. Grease works best if you're pulling by hand tools, but is hardest to clean up, and harder to get air bubbles out of the grease so the method works. Threads should be lubricated with grease, oil, or something anyway to prevent damage to the threads of the bolt and more importantly the clutch, as well as to maximize pulling force that would otherwise be wasted on overcoming friction.
And there is no possible way that the rotational force provided by impact wrenches will harm crank bearings. If those bearings can withstand the violent rotational forces that internal combustion explosions under high compression create...especially with today's electronic reverse systems where one massive explosion hits the connecting rod bearing so hard it actually spins the motor over 180 degrees in the opposite direction from a dead stop? Man...a series of impact wrench hits is merely love taps to those bearings. But I do suggest not hitting the end of the puller with a hammer as some do to try to "break" it free. Such non-rotational force can be very damaging to crank bearings and maybe seals if you manage to actually move the crank. You gotta just let the impact's rotational force do that job...
I betcha over 95% of the dealer techs out there are pulling customer's clutches with impacts every day...
Water is a heckuva lot easier to clean up because you don't have to. It just disappears. But the threads need to be sealed very tightly because the water flows so easily it can seep past the threads and you lose some force. With an impact wrench that's fast enough this doesn't matter. Grease works best if you're pulling by hand tools, but is hardest to clean up, and harder to get air bubbles out of the grease so the method works. Threads should be lubricated with grease, oil, or something anyway to prevent damage to the threads of the bolt and more importantly the clutch, as well as to maximize pulling force that would otherwise be wasted on overcoming friction.
And there is no possible way that the rotational force provided by impact wrenches will harm crank bearings. If those bearings can withstand the violent rotational forces that internal combustion explosions under high compression create...especially with today's electronic reverse systems where one massive explosion hits the connecting rod bearing so hard it actually spins the motor over 180 degrees in the opposite direction from a dead stop? Man...a series of impact wrench hits is merely love taps to those bearings. But I do suggest not hitting the end of the puller with a hammer as some do to try to "break" it free. Such non-rotational force can be very damaging to crank bearings and maybe seals if you manage to actually move the crank. You gotta just let the impact's rotational force do that job...
I betcha over 95% of the dealer techs out there are pulling customer's clutches with impacts every day...
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This is new to me. Please explain a spanner, and how it would be used with a puller...a link or something with a photo would be awesome if you happen to be lucky enough to have something. But just a description would be great.
I'm not sure what this is you're talking about but I'm intrigued. Thanks.
Are you serious?
Anyone who uses an impact on their clutch is asking for trouble. I have never seen a dealer mechanic use one. Clutches come off so easy if you use the right tools that I don't understand why anyone would even want to use an impact. If my dealer would use an impact on my crank I would find another dealer. It's that simple. Do not use an impact gun on your crank!
Anyone who uses an impact on their clutch is asking for trouble. I have never seen a dealer mechanic use one. Clutches come off so easy if you use the right tools that I don't understand why anyone would even want to use an impact. If my dealer would use an impact on my crank I would find another dealer. It's that simple. Do not use an impact gun on your crank!
