Oil fill tube

Old 03-15-16, 09:21 AM
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Oil fill tube

I have an oil fill tube on a kohler engine that was broken off where it entered the engine casting. I was able to safely remove the broken piece of the tube from the casting, but I need to fasten the broken pieces back together. A replacement tube is no longer available from Kohler. I have a mig welder, and can braze it if I have to, but this is really light stuff and I am just not sure which way to go to not destroy it in the process. The joint where it broke off acts as a stop so the oil fill tube will not go in too far. The piece that remained in engine is a smaller diameter than the rest of the tube or I could just get another piece of steel tubing. I'm looking for ideas?
Old 03-15-16, 09:39 AM
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I'd look for a different tube and modify it if need be to make it work.
Old 03-15-16, 10:33 AM
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Check with small engine repair shops and shade tree mechanics that work on small engines. They may have a boneyard where you can find the part you need. If no luck finding a replacement part maybe find a piece of tubing the appropriate size and weld a ring on the outside to act as a stop where it meets the engines case. Are there any machine or metal fabrication shops in your area that can swag tubing and can make a new tube in exchange for a six pack?
Old 03-15-16, 11:15 AM
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FWIW: I know you said the part is no longer available; before you go re-inventing the oil fill tube you may want to give these people a call:
JacksSmallEngines.com (I have no affiliation.)

The website is highly detailed and still I can never find anything. You can call them and get a very helpful Customer Service person (live human!). I've had good experience with them. Maybe they'll have a work around or an aftermarket part.

As for joining, I'd go with brazing before welding, and practice on pieces of similar thickness before attempting the final product. Does this thing thread into the hole?
Old 03-15-16, 11:32 AM
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Whatever you wind up doing, make sure the result is "exactly" the same length as the original tube; otherwise, you'll forever be getting inappropriate readings on your Oil Level . . . . which could have disastrous results.

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