Leimbach pump tip

[steamer]

Thanks Scott. Yes you can change the seals but it's quite a job too. The seals are in the motor side of the pump and are held in with what I would call a seal head. If you separate the motor and pump you'll find that you can just pull the drive coupling and pump shaft out in one piece. It's okay to do this as the shaft has a flat spot and the pump gear has been staked to fit the shaft. Be careful as there are shim washers behind the coupling you don't want to loose. In the centre if you look close you'll see the outline of the head and it's held in with four center punch pops. Now the tricky part, you have to drill out the punch marks to free up the head. I used a 1/16" drill bit down about .040. Next about 1/8" outside the shaft hole dill two more holes 1/16" down about .080 to .100 thou. In there use two 1/16 roll pins and drive them in. With wide mouth pliers gently turn the head to breaks the punch marks and when it turns, slowly begin to back he head out. Once out you'll find Three o-rings, two on the head, one in the body.. The reason they leak is they used a butle ring and they won't take the temperature. I used a Viton and they should will last longer but we''ll see. I have the sizes for all three if you need them.
Rob

[SmallHaul]

Thanks for the detailed description, it sounds like quite a job to do. I flipped the housing over tonight so the vent hole is facing down and I'll run it a lot tomorrow and see how much it leaks. I ran it for about 15 minutes and it looks bone dry so maybe the leak is very slow.