Crankshaft Replacement Issue

[davbell22602]

MTD/Sears 247.888500
Tecumseh HMSK85-155901A

Broken connecting rod. Connecting rod marked the surface on the crankshaft when rod goes. Crankshaft 35980A No longer Available. Short Block 756325 No longer available. Can I clean up the markings on the crankshaft with emory cloth and put new connecting rod and go with it? Any ideas or suggestions.

 

[Rivets]

I would suggest cleaning the crank bearing with meariatic acid, also know as technical hydrochloric acid. Soak the bearing in the acid, which will eat the aluminum away, but not hurt the cast-iron crank. Be care with this acid and do it outside. Read all precautions first. BE VERY CAREFUL!!!

 

[davbell22602]

Here's pic of the crankshaft and rod journal.

 

[reynoldston]

I have never had any luck cleaning a rod journal. It just never lasted very long after. Myself I bring it to a machine shop to have it re cut and then install a oversize rod. Just like new then. A new rod, gaskets, and some labor, give the clean up a try. Not that much to lose if it doesn't work but if it dose you are ahead of the game. Something I couldn't or will not guarantee for a customer job.

 

[davbell22602]

I dont know if I have any local machine shops that deal small engine parts.

 

[reynoldston]

I know what you mean. Machine shops that work on small engines are becoming a thing of the pass. This is the reason I said try to clean it. As for myself I just never had luck in doing so. But also I have never tryed it with the acid. Give it a try because I can't see any big money lose other then your own labor. If it was my own mower not a customers I sure woud give it a try. Have you given used parts or a used engine a thought. We are very lucky to have some very good mower salvage yards around us and I have had good luck with them.

 

[davbell22602]

I know what you mean. Machine shops that work on small engines are becoming a thing of the pass. This is the reason I said try to clean it. As for myself I just never had luck in doing so. But also I have never tryed it with the acid. Give it a try because I can't see any big money lose other then your own labor. If it was my own mower not a customers I sure woud give it a try. Have you given used parts or a used engine a thought. We are very lucky to have some very good mower salvage yards around us and I have had good luck with them.

No used mower junkyards over. They all go to the scrapyard. Thats why I had to start buying broken equipment last year to keep it from seeing the scrap yard. I bought this snowblower for $25. Dixies sales says they can still new crankshaft but they wont if the warehouse has it or NLA till I try ordering one. Retail price on the crankshaft is around $120.

 

[Carscw]

I agree give it a try but keep your eye out for a good used engine. It never hurts to have a back up.

Sent from my iPhone using LMF

 

[reynoldston]

Salvage yards can be a messy business, but as I say where I live and if you know where to look and I find the owners are a breed all there own we still have some salvage yards around where I live.. I always try for new parts first but some of the older garden tractors you always can't find parts which the person starting this thread is finding out. If you can find a new crank for $120? if that is in US money that is a good price. Hope you the best of luck. Also have you looked into buying a new engine. If you have a real good chassis it might be worth doing so.

 

[davbell22602]

What engine can I use since Tecumseh is no longer in business? What engines are they using on the newer snowblowers that are bought from places like sears, lowes, home depot and dealers?