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  • #16
    Any instructions for checking and rebuilding the oil tank check valve ?
    I have one that someone took the top square shaped piece from the top and also the spring under the top piece.
    Sorry no part #'s , I am work and the book is at home . Any and all responses are appreciated

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    • #17
      I have those repair parts. For service, make sure the brass sleeve is not binding on the body as it moves and, particularly, make sure you have a good seal where the check ball seats in the body. Occasional leaks come from paint or rust flakes in the oil lodging under the ball, but permanent leaks come after corrosion of the seat surface. Use a fresh ball bearing, then solder the old one to a piece of copper tube and use it to lap in the seat. A sharp rap with a punch should settle the new ball in the cleaned-up seat and give an airtight seal.

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      • #18
        Thank you for the very valuable information on the hand pump check valve Steve. I have a hopefully functioning check valve, and I can now attempt to repair the one with missing items .

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