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Oil leak
Oct 9, 2019 18:11:36 GMT -5
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Post by jtgearhart on Oct 9, 2019 18:11:36 GMT -5
I have recently encountered a problem where I was losing mass amounts of oil... after tearing down the head and everything else and rebuilding it i finally was able to track down where it's coming from, turns out it was in the transmission case behind the roller weights i found a small circular hole... my question is, can that hole be repaired or am i gonna have to scrap the motor?
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Rune 75
Scoot Enthusiast
Posts: 441
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Oil leak
Oct 10, 2019 2:30:40 GMT -5
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Post by Rune 75 on Oct 10, 2019 2:30:40 GMT -5
Picture ?
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lupo76
Scoot Enthusiast
Posts: 157
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Post by lupo76 on Oct 10, 2019 3:03:06 GMT -5
Yeah, picture would be helpful. Could also be the hole for the tensioner screw...
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Post by GrumpyUnk on Oct 13, 2019 11:06:43 GMT -5
If the hole is bored and tapped for a fastener(threaded), then perhaps the fastener fell out and can be replaced. OTOH, if the hole is caused by a defect, then a repair product such as JB Weld may well fill the opening and prevent the loss of lubricant. To make JB Weld stick to the case, the surface would have to be roughened with abrasive(sandpaper/AlOx), and cleaned of all oil/lube using a solvent such as acetone. If indeed it is a failure of the case, using some reinforcing screening, metal or plastic, might help form a strong, long-lasting plug/patch. Embed the screening into the epoxy and layer on a surface coat. Some of the 'welding expoy' products sold at HF are suitable for such problems, and are less expensive than the JB Weld brand, FWIW> I just used that epoxy to glue the 'arms' back on the front fender of my latest acquisition. Used epoxy and screening on the inner surface, spread over the fracture and ~1" past in either direction. Finally used some on the external break when the mounting arms(bent) induced me to put more force than I wanted onto the 'ears'. Not the case, but we'll see if it works. Seems sturdy. I have used 'filled epoxy' in damaged threaded bores on lawn equipment, specifically the brake mounting bolt hole. Old bolt was rusted in place(Fe in Al) and would not come out. I damaged part, and drilled away some of the threads. There were some good threads deeper into the bore. Coated the replacement bolt with silicon lube, dabbed on some 'filled epoxy' and threaded the bolt in place. Waited 24 hours, and by golly, just unscrewed the bolt from the epoxy, which had formed around the threads and bonded to the transmission case. PBT, and torqued both bolts to desired level with no problem. tom
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