Old Craftsman Tractor - How to Remove Pulley

[cloves]

Hi everyone,

My father in law has an old tractor. His father owned it before him so I imagine its pretty old. Recently engine started spewing out oil from the intake hose from what he was telling me. He took it to an engine shop and they wanted heavy dollars to rebuild. Anyway he loves the tractor, so he just got a new engine put it in but needs the pulley from the old engine. He can't figure out how to take the pulley off. I told him I would try and get him help from the good tractor folks on here who have helped me in the past. I forgot to take a pic of the tractor but I did get a picture of the engine and pulley. I think to take the pulley out you need to remove the key but that's just my brain fog talking.

He says he's tried but nothing.

 

[ultrarunner]

Allen Screw Deep inside the hole shown would be a common method.

If it’s never been off a good penetrating oil applied ahead of time might make the process easier as would a puller.

I had a difficult pulley last week and heat from a propane torch was the ticket…

 

[oldnslo]

There might be two set screws located 90 degrees apart. I would fully remove all the set screws and fill the hole with penetrating oil at let it soak. Heat and or an air hammer on end of shaft while pulling helps break the rust loose also.

 

[Tinhack]

There may also be two set screws stacked on top of one another. That was a common way to lock shafts and keep the set screw(s) from losening.

On a side note: That Timken Bearing decal on the engine is the same style that was on my 1939 Atlas/Craftsman 12x36 Lathe.

 

[2manyrocks]

Patience….lots of it. Let penetrating oil do its work. Repeated applications of oil and heat. Would suggest a pulley puller, but could wreck the pulley if he gets too aggressive.

 

[RayIN]

Perhaps you two should compare notes: Craftsman motor replacement?

 

[flyerdan]

All the set screw checks above, then put a 3 jaw puller on and snug it up. Air hammer with a pulley driver or ground flat chisel, couple of bursts on the side of the pulley. See if the puller will snug up any more. That's the best way to go about it without damaging anything, once it starts to move you've got it knocked.

 

[Sportsman762]

All the set screw checks above, then put a 3 jaw puller on and snug it up. Air hammer with a pulley driver or ground flat chisel, couple of bursts on the side of the pulley. See if the puller will snug up any more. That's the best way to go about it without damaging anything, once it starts to move you've got it knocked.

If you cant do what flyerdan suggested then hit the center bolt on the puller. It might break it loose. I have had the puller and part go flying when it let loose, so keep your eyes out of the flight path. (I use posi lock pullers, they are the best out there but cost a mint).
They make pulley pullers like the OTC 679 that are used with a bar puller. They spread the pressure out so your do not get marks on the pulley.

Amazon.com: OTC 679 V-Belt Pulley Pulling Attachment for Pulleys up to 5-7/8" in Diameter : Automotive

Buy OTC 679 V-Belt Pulley Pulling Attachment for Pulleys up to 5-7/8" in Diameter: Power Pulleys - Amazon.com ✓ FREE DELIVERY possible on eligible purchases

www.amazon.com

bar puller

https://www.amazon.com/OTC-927-Ton-Push-Puller/dp/B0002SRH4W

 

[ultrarunner]

^^^ You are right as far as pricey.

45 years ago I bought a nice OTC puller set… some years I never use it but when needed I sure am glad to have it… it was not exactly cheap at the time but should last several lifetimes.

I’ve picked up a few others along the way for little back when I hit the auto swap meets… use to be a lot of them here but far and few between now.

 

[tomplum]

If push comes to shove, cut the shaft off so you can work with it. Heat / press etc.