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techtalk:ih:oil03i [2025/09/05 21:52] – [Shaft Seal] hippysmacktechtalk:ih:oil03i [2025/09/06 02:57] (current) – [General advice] hippysmack
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 Tightening / adjusting the mounting nuts / bolts: \\ Tightening / adjusting the mounting nuts / bolts: \\
 +Do not over tighten the oil pump bolts as that may bind up the pump and ruin it. The gaskets make up part of the oil pump clearances. ((ryder rick of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/65154-oil-pump-seals)) 
   * You can modify the stud mounted pumps to use bolts instead. ((mrmom9r of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/191180-installing-72-oil-pump-on-69xlch#post4124056))   * You can modify the stud mounted pumps to use bolts instead. ((mrmom9r of the XLFORUM https://www.xlforum.net/forum/sportster-motorcycle-forum/sportster-motorcycle-era-specific-and-model-specific/ironhead-sportster-motorcycle-talk-1957-1985/191180-installing-72-oil-pump-on-69xlch#post4124056))
     - Drill the mounting holes in the pump body 1/64" oversize.     - Drill the mounting holes in the pump body 1/64" oversize.