Found my oil leak, now how do I remove the crank pulley

[stang8689]

My engine is a briggs 25hp, the crankcase is leaking. I have the engine out but the pulley is not coming off. Do I need a special puller or can I go to autozone and rent one for a car? I am also considering replacing the pulley because it looks bent. I just bought the mower and want to get it in good shape. The drive belt is cracking, how hard is it to change the drive belt? Is it much easier with the engine out or could I hold off until next year? I really want to make sure I order the right pulley, is #86 in this diagram the crank pulley? Thanks

Parts and Diagrams for Troy-Bilt 14AR809K063 25HP Garden Tractor (2002)

 

[reynoldston]

As a rule I have found they don't come off too hard. I am guessing it has a bolt in the center. Remove this bolt and let it set with some penetrating oil on it. Just use a soft hammer and hit it off. If it doesn't come off then I would say get a puller. There are different style pullers to choose from. Seeing you are going to replace the pulley anyways it doesn't matter what you use.

 

[stang8689]

There is no bolt holding it on, there was a bolt holding the clutch pullry I think it's called, that came off easy. It had 2 pullies under the crank the bottom one was connected to the deck, that was bolted on and came right off.

 

[stang8689]

Anyone else? Any help would be greatly appreciated

 

[louky]

Anyone else? Any help would be greatly appreciated

Are there any threaded holes on the pulley? I bought this HF puller kit a few years ago and have used it a lot. http://www.harborfreight.com/automotive-motorcycle/pullers/bolt-type-wheel-puller-set-62620.html

Would you have access to an air chisel? You can put some pry bars under the pulley, pull up gently at the same time you "chatter" with this air tool. Penetrating fluid is a must.
http://www.harborfreight.com/medium-barrel-air-impact-hammer-61244.html

If you don't have access to either of these, you can try some judicious use of heat. The pulley probably has a key in a keyway that is seized.

 

[Pumper54]

Looking at the picture of the engine drive pulley at the link you posted it seems there maybe two key way slots in the pulley or maybe one in the pulley and the other on the shaft about 180 degrees apart. Soak the pulley shaft connection with some good penetrating oil and let it sit awhile then rap the center of the shaft with a plastic hammer and see if that pops it loose. If not careful use of a puller might be in order.
Tom

 

[Mike_Goad]

Unfortunately, Engine pulleys can be very hard to remove. You will need to use a puller but you will probably ruin the pulley. most of the time, moisture gets in-between the crankshaft and pulley and rust/corrosion happens. I have even had to cut the pulley off but this is a major pain. There is an actual pulley puller that fits into the grove of the pulley. I did not look at the picture of the previous post's puller. I would use a puller that has 2 halves and has bolts that will tighten down.
When you do get it off, use some real fine sand paper / emery cloth to clean the crankshaft then use some never-seize. it can be purchased at an automotive store.

 

[reynoldston]

Still very good to revue old post and sure nothing wrong with it. I sure hope he has his pulley off by now seeing he did the job back in 2011. :thumbsup: We do get a lot of questions and some times it would be nice to know how the repair came out.

 

[Pumper54]

reynoldston,

Wow now I am feeling a bit foolish, I didn't see the date of the original post, sure hope he figured something out by now.
Tom

 

[reynoldston]

reynoldston,

Wow now I am feeling a bit foolish, I didn't see the date of the original post, sure hope he figured something out by now.
Tom

Do not feel foolish, as I said its good to bring back some old post because the old problems don't go away. This is what this forum is all about and you added some very good ideas that someone can use. If he doesn't have it figured out by now he sure must have some long grass to mow. :smile: