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Started By
Message
Bent the crankshaft on my lawnmower
Posted on 9/5/13 at 10:38 am
Posted on 9/5/13 at 10:38 am
So I hit something in the yard and it bend the crankshaft and sheered the flywheel key.
Is it possible to bend the crankshaft back, or is it a loss? I have the new flywheel key. Also this is for a push mower.
Thanks for any help
Is it possible to bend the crankshaft back, or is it a loss? I have the new flywheel key. Also this is for a push mower.
Thanks for any help
Posted on 9/5/13 at 10:43 am to Geaux_Tigers1
Going to cost more to repair than to buy new...
Posted on 9/5/13 at 10:52 am to Geaux_Tigers1
Just buy a new one. You will never get it perfectly straight and the wobble will give you problems
Posted on 9/5/13 at 10:53 am to wickowick
quote:
Going to cost more to repair than to buy new...
This
ZTR time
Posted on 9/5/13 at 10:53 am to wickowick
Is there any chance to bend it back without buying a new crankshaft?
Posted on 9/5/13 at 10:59 am to Geaux_Tigers1
you can try but I give it .0000000000001% of working
This post was edited on 9/5/13 at 11:00 am
Posted on 9/5/13 at 10:59 am to Geaux_Tigers1
I did the same thing. Leaves were covering the sewer clean out deal, had to get a new motor for the snapper. Was about $250 at k and d rent all in br
Posted on 9/5/13 at 11:07 am to Geaux_Tigers1
CBLSU316 may can shed some light on how to repair it.
Posted on 9/5/13 at 11:10 am to HeadSlash
quote:
This ZTR time
Naw, Jose time.
Posted on 9/5/13 at 11:36 am to greasemonkey
quote:This
you can try but I give it .0000000000001% of working
Posted on 9/5/13 at 11:51 am to Geaux_Tigers1
how do you know the shaft is bent? That's the purpose of the shear pin. To keep the shaft from bending
Posted on 9/5/13 at 12:00 pm to Marlo Stanfield
You can have someone straighten it for you but the bend will most likely return
This is the only reasonable method I've heard of but have never tried
LINK
This is the only reasonable method I've heard of but have never tried
quote:
We first took the engine off the wagon and set It on the concrete floor beneath the loading dock door. A flat steel plate was placed on top of the bearing and a four-by-four timber was cut and driven tight between the flat plate on the bearing and the concrete lintel over the door. Everything was locked in place now.
Next, the dial indicator was attached to its magnetic base and stuck on the side of the water hopper. Now with the indicator tip touching the inside edge of the flywheel, the wheel was rolled around and the location where the wheel was deflected in the most was identified and marked with chalk on the face and outside. This chalk mark was then rolled down to the floor, a six-ton jack was placed under the end of the crankshaft, and Jacking began.
Leo encouraged us to take it slowly at this point, as I tend most often to get in a hurry to fix things. So, we had to jack the shaft until the wheel appeared vertically straight, and then jack just a bit more. The shaft would spring back some anyway. Next, we released the jack pressure, rolled the wheel around and checked the indicator again to see how much more we needed to jack.
By Jacking and rechecking the indicator we were able to bring the shaft back in alignment within several thousandths, certainly acceptable by the naked eye when running. I think my shaft was brought to within eight thousandths and we left it there.
LINK
Posted on 9/5/13 at 1:21 pm to xenon16
cheap mower replace- if this on an expensive mower- a good repair shop will have the machine to straighten the shaft
Do not try to redneck repair yourself-
Do not try to redneck repair yourself-
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