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Fuel Injection Pump
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Vinnys21 View Drop Down
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Joined: 15 Mar 2025
Location: Byron, GA
Points: 4 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Vinnys21 Quote  Post ReplyReply Direct Link To This Post Topic: Fuel Injection Pump
    Posted: 20 Mar 2025 at 7:03am
Hey guys, I am new to this forum and own a 1985 Allis Chalmers 653. Unfortunately, I believe the shaft in the injection pump has broken. Is there a rebuild kit that anyone is aware of for this with the seals? I plan to take it out this weekend and actually look but trying to get ahead. I have seen a lot of people mention it is based off of an HD4. I know some places can rebuild them but want to be able to do it myself and learn along the way. Any insight would be extremely helpful, thank you in advance.
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Codger View Drop Down
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Joined: 23 Dec 2020
Location: Utopia
Points: 2127 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Codger Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2025 at 7:26am
Roosa-Master pump? Easy pump to rebuild but you can't calibrate it correctly and that is best left to a fuel shop with the needed equipment. Lot of wear parts to be addressed.
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Mikez View Drop Down
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Joined: 16 Jan 2013
Location: Usa
Points: 8567 		Post Options Post Options   Thanks (1) Thanks(1)   Quote Mikez Quote  Post ReplyReply Direct Link To This Post Posted: 20 Mar 2025 at 8:28am
Try posting this in farm equipment section and maybe injectorpumpEd will comment. He has a pump rebuild shop and would give sound advice. Not sure if he looks through construction area.
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