I have to “old” style 3-pulley system

[lawrencekahlden]

I am having a difficult time finding some parts. One is the Hexagon flange head cap screw and Lock nut. My bolt has stripped so my belt slowly gets loose to where it will not work therefore I have no water flow. After rigging it a few times I need to get it replaced. Any idea where I can find older parts such as one of these. I may need to change the whole pulley system as there is some rust. Or I guess I can get the bolt and bring it to a place and get one made. I ordered one from cummins but it turned out to not work for me as it was for the news model I guess.

Topic

[lawrencekahlden]

Thanks for the link on bolts. I do do minor repairs on my boat and something like this i can handle. But the link you attached is very helpful and I appreciate it.

[bluebyu]

Any quality fastener supply will have the bolt you need.

If you will be doing minor repairs and maintenance yourself, learn about bolts.
Get a thread gauge and learn how to measure bolts.

https://www.mudgefasteners.com/news/2020/12/30/how-to-measure-the-size-of-a-bolt

[Tony Athens]

:Post good pics of all.. Ordering something like this from Cummins ends up being something send from a “parts counter monkey”..

That “monkey” would have no clue what he is sending you other that a “part number” that was supersession from what you had… It may work on “paper” but not in the “real world”

[lawrencekahlden]

I do understand that it is a bolt. I ordered the part thru my local cummins place. It was the exact part however it didnt fit mine. They then told me I had the older system so they dont carry that bolt or part number anymore. The one they sent was not threaded all the way up and it was too thick. So I have temporarily tightened the belt but it will get back to being slack in about 2 rides. I just need to pull out the bolt and bring it to a place like mcmaster. Thanks

[bluebyu]

What you are describing is a standard type of bolt, not a “older part”.
try Mcmaster:
https://www.mcmaster.com/hex-head-flange-cap-screws/

You will find lock nuts at the same place, or at Fastenal or many other places.

Hope this helps

[Author]

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