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  1. blunted

    Yanmar 4LHA htp replacement

    Well, shit got Medieval on the bolt. I didn't need a spare alternator anyhow. You can see the bolt was broken off part way through the threaded bushing / long nut. I got the nut up to 800F, nothing Filing the bolt straight, nope pipe wrench, nope Eventually I caved and cut the alternator off...
  2. blunted

    Yanmar 4LHA htp replacement

    Had I the skillset, I would have welded a large diameter nut to the end of the bolt by now for bigly leverage
  3. blunted

    Yanmar 4LHA htp replacement

    I'm being supremely patient with this one, under normal circumstances I would have had it that fucker off with a sawzall weeks ago, but I need the block intact. And everyone here knows, I more of a weed guy
  4. blunted

    Yanmar 4LHA htp replacement

    Oh yes that's exactly what I am talking about the alternator is not even moving. This is where I started the whole process, taking off the belt etc, before heat, lube, foul language etc. No belt 3' long metal rod for leverage I have even taken the fresh water pump off the front of the engine to...
  5. blunted

    Yanmar 4LHA htp replacement

    Thanks Zonk and Longy, The mystery is: how is this thing still welded on so tight? I can barely rotate the alternator itself, the bolt is seemingly welded to the alternator tab. All this with no nut on the back to hold tension. What is it, that this bolt is threaded into that's gripping so...
  6. blunted

    Yanmar 4LHA htp replacement

    Cheers, Next up this weekend is filing the edges of the bolt flatter then try again with 6 sided socket and a breaker bar. We had an engine rebuild a few years ago and that's when this would have been installed last and they may have taken liberties with the mounting arrangement, thus no bolt...
  7. blunted

    Yanmar 4LHA htp replacement

    Trivia question for anyone with knowledge. I am trying to remove my alternator from a Yanmar 4JH 4AE. The bolt head is rounded off somewhat and frozen in place. There is no nut on the back side of the engine casting but there is a bushing kind of thing that goes between the ears of the...


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