Cracked crank threads...what do

Arborist Forum

Help Support Arborist Forum:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.
Could anyone tell me how pull the worm gear off the crank? Any OEM or homemade tools that can be used?

From memory- 3/4 inch pipe fitting threads on- then you make provision for a centre bolt ground to fit the crank end- fashioned up as a puller- just like the Husqvarna ones.
Dont break the crank on that side as well though.
 
From memory- 3/4 inch pipe fitting threads on- then you make provision for a centre bolt ground to fit the crank end- fashioned up as a puller- just like the Husqvarna ones.
Dont break the crank on that side as well though.
Searching around on the site revealed @Mattyo showing his DIY method here. I'll take great care not to crack this one too. I also confirmed that the flywheel nut threads just fine on the damaged crank.

I did obtain a crankcase, but I'm not sure about the integrity of it's bearings, so I'll try my hand with the original.

This will probably be a method I'll have to use to remove the pressed on worm on my Jonesred 910 project as well.
 
Searching around on the site revealed @Mattyo showing his DIY method here. I'll take great care not to crack this one too. I also confirmed that the flywheel nut threads just fine on the damaged crank.

I did obtain a crankcase, but I'm not sure about the integrity of it's bearings, so I'll try my hand with the original.

This will probably be a method I'll have to use to remove the pressed on worm on my Jonesred 910 project as well.

Searching around on the site revealed @Mattyo showing his DIY method here. I'll take great care not to crack this one too. I also confirmed that the flywheel nut threads just fine on the damaged crank.

I did obtain a crankcase, but I'm not sure about the integrity of it's bearings, so I'll try my hand with the original.

This will probably be a method I'll have to use to remove the pressed on worm on my Jonesred 910 project as well.
Here's a picture of the puller I made.
 

Attachments

  • 17420052737114604291069324058054.jpg
    17420052737114604291069324058054.jpg
    2.3 MB
I think id opt for a used crank. So much easier to split the case...put new bearings in and toss in a better crank than to attempt a weld there.
Honestly, I'm a little intimated by this. I've never done it, I don't have a splitter, and I'm concerned I can't get OEM parts. I've gone as far as search for and put the AM bearings, splitting tool and case gaskets in my cart, but haven't pulled the trigger.
 

Latest posts

Back
Top