DIY crank pulley installation tool?
DIY crank pulley installation tool? I have seen it mention that some people use a long bolt with a large nut and washer to press the crank pulley back on. I haven't been able to find what type of bolt has been used to do this and hoped someone could fill me in. I have a hardware store with a great selection of nuts and bolts, so if I knew what to get, I could get that sucker back on!
Staging Lane
Joined: Oct 2002
Posts: 70
Likes: 0
From: Memphis, TN
I "cook" the pulley for about 10 minutes in the oven at 150 (don't want to melt the rubber) so it expands just a little. Then I use the original crank bolt to press it on. Once it's on, remove the crank bolt and get your new one and follow your spec to stretch it in place.
Buy the following parts from McMaster.com and make 2:
99055a239 - M16 x 2.0 300MM in length ($13.60)
92497A600 - Nuts M16 x 2.0 Pack of 10 ($8.14)
Cut the threaded rod in half, weld 1 nut to the end of each piece, install a 2nd nut and use some washers as well. I can add a pic of this tool this evening.
99055a239 - M16 x 2.0 300MM in length ($13.60)
92497A600 - Nuts M16 x 2.0 Pack of 10 ($8.14)
Cut the threaded rod in half, weld 1 nut to the end of each piece, install a 2nd nut and use some washers as well. I can add a pic of this tool this evening.
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There is a possiblity of damaging the threads in the crank. If you use a stud and nut, the only risk of damage is to the stud.
I've done it with a bolt as well but it IS a bad idea. As cheap as a stud, nut, and two washers is it is just silly to risk damaging the crank threads. Just lube the stud threads with some anti-seize for help.
I've done it with a bolt as well but it IS a bad idea. As cheap as a stud, nut, and two washers is it is just silly to risk damaging the crank threads. Just lube the stud threads with some anti-seize for help.
12 Second Club
Joined: Mar 2005
Posts: 1,498
Likes: 0
From: Corpus Christi
There is a possiblity of damaging the threads in the crank. If you use a stud and nut, the only risk of damage is to the stud.
I've done it with a bolt as well but it IS a bad idea. As cheap as a stud, nut, and two washers is it is just silly to risk damaging the crank threads. Just lube the stud threads with some anti-seize for help.
I've done it with a bolt as well but it IS a bad idea. As cheap as a stud, nut, and two washers is it is just silly to risk damaging the crank threads. Just lube the stud threads with some anti-seize for help.
I just read to who you were refering too. your right!! if the pully doesn't go in far enough then yes the threads could be damaged.
I recently made the same tool with the McMastercarr parts listed above in this thread.
It worked wonderfully, I didn't have to heat, beat, persuade, oil, grease or anything else with the tool. I started the pulley by hand to get it straight, probably an 1/8" on, then the tool did the rest. It slid on with very little resistance and was on there tight.
Make the tool, you'll be glad you did and you won't have to worry about ruining the threads in your crank.
It worked wonderfully, I didn't have to heat, beat, persuade, oil, grease or anything else with the tool. I started the pulley by hand to get it straight, probably an 1/8" on, then the tool did the rest. It slid on with very little resistance and was on there tight.
Make the tool, you'll be glad you did and you won't have to worry about ruining the threads in your crank.
Staging Lane
Joined: Oct 2002
Posts: 70
Likes: 0
From: Memphis, TN
I apologize if I came off rude in my post. I really didn't mean too. I should have worded it better. There has been countless posts on here about people destroying the threads in their crankshaft trying to use the old bolt to pull it on.
There are several tools out there to do this but the easiest/safest way is to get a long piece of all thread, several this washers and a nut. Make sure you put some antiseeze on the outside end where the nut will be. Screw the all thread as far into the crank as you can and pull it on the crank.
I just don't want anyone to have to go through trying to repair the threads in the crankshaft.
There are several tools out there to do this but the easiest/safest way is to get a long piece of all thread, several this washers and a nut. Make sure you put some antiseeze on the outside end where the nut will be. Screw the all thread as far into the crank as you can and pull it on the crank.
I just don't want anyone to have to go through trying to repair the threads in the crankshaft.
There is a possiblity of damaging the threads in the crank. If you use a stud and nut, the only risk of damage is to the stud.
I've done it with a bolt as well but it IS a bad idea. As cheap as a stud, nut, and two washers is it is just silly to risk damaging the crank threads. Just lube the stud threads with some anti-seize for help.
I've done it with a bolt as well but it IS a bad idea. As cheap as a stud, nut, and two washers is it is just silly to risk damaging the crank threads. Just lube the stud threads with some anti-seize for help.
Launching!
Joined: Jan 2010
Posts: 283
Likes: 0
From: N. Va
I'm with liljay....
when I installed my UD pulley...I was told just heat it up in the oven and it'll slide on like butter....well they lied!!! It barely got on but the stock bolt still wasn't long enough to reach. I put a board across the face of the pulley and started hitting it with a hammer....I got enough to barely get it threaded and then the bolt popped...like I stripped the very first thread...I about crapped myself. I then pulled out the board and hammer again and hit it until i couldn't lift my arm....by then I could only get 3 threads into the crank. I'm praying the whole time and thankfully God loves me cause those 3 threads held and I was able to get it on.....but i will NEVER EVER do that again! I never even thought about the threaded rod and nut....I wish I had thought of that.
So yeah...don't use the stock bolt to pull the pulley on....you'll have a heart attack at best and at worse need a new crank!
when I installed my UD pulley...I was told just heat it up in the oven and it'll slide on like butter....well they lied!!! It barely got on but the stock bolt still wasn't long enough to reach. I put a board across the face of the pulley and started hitting it with a hammer....I got enough to barely get it threaded and then the bolt popped...like I stripped the very first thread...I about crapped myself. I then pulled out the board and hammer again and hit it until i couldn't lift my arm....by then I could only get 3 threads into the crank. I'm praying the whole time and thankfully God loves me cause those 3 threads held and I was able to get it on.....but i will NEVER EVER do that again! I never even thought about the threaded rod and nut....I wish I had thought of that.
So yeah...don't use the stock bolt to pull the pulley on....you'll have a heart attack at best and at worse need a new crank!
I used one of these: https://ls1tech.com/forums/album.php...pictureid=5971
One of the best tools ever made.
One of the best tools ever made.
I'm with liljay....
when I installed my UD pulley...I was told just heat it up in the oven and it'll slide on like butter....well they lied!!! It barely got on but the stock bolt still wasn't long enough to reach. I put a board across the face of the pulley and started hitting it with a hammer....I got enough to barely get it threaded and then the bolt popped...like I stripped the very first thread...I about crapped myself. I then pulled out the board and hammer again and hit it until i couldn't lift my arm....by then I could only get 3 threads into the crank. I'm praying the whole time and thankfully God loves me cause those 3 threads held and I was able to get it on.....but i will NEVER EVER do that again! I never even thought about the threaded rod and nut....I wish I had thought of that.
So yeah...don't use the stock bolt to pull the pulley on....you'll have a heart attack at best and at worse need a new crank!
when I installed my UD pulley...I was told just heat it up in the oven and it'll slide on like butter....well they lied!!! It barely got on but the stock bolt still wasn't long enough to reach. I put a board across the face of the pulley and started hitting it with a hammer....I got enough to barely get it threaded and then the bolt popped...like I stripped the very first thread...I about crapped myself. I then pulled out the board and hammer again and hit it until i couldn't lift my arm....by then I could only get 3 threads into the crank. I'm praying the whole time and thankfully God loves me cause those 3 threads held and I was able to get it on.....but i will NEVER EVER do that again! I never even thought about the threaded rod and nut....I wish I had thought of that.
So yeah...don't use the stock bolt to pull the pulley on....you'll have a heart attack at best and at worse need a new crank!
