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allisdozer 
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Joined: 25 May 2023
Location: MA
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 Topic: Parts Needed HD16DP
Posted: 26 May 2023 at 6:17am |
Hello all, I have a 1969 Allis Chalmers HD16-DP bulldozer and I'm looking for a injection pump drive coupling, the rubber piece. It is number 13 on the diagram and the part number from the book is 4059013-5. Any help is greatly appreciated.
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Codger
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Joined: 23 Dec 2020
Location: Illinois
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Posted: 26 May 2023 at 6:45am |
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There will be tag(s) riveted to the injection pump. Please post that up as the shop I use will not be able to use the AC numbers, but the drive style used to be common.
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A career built on repairing and improving engineering design deficiencies, shortcomings, and failures over 50 years now.
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allisdozer
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Posted: 26 May 2023 at 7:14am |
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injection Pump Model # B-120Q-G375A
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Codger
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Posted: 26 May 2023 at 11:29am |
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I'm thinking there should be more than that needed. Can you photo the tag?
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A career built on repairing and improving engineering design deficiencies, shortcomings, and failures over 50 years now.
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allisdozer
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Posted: 26 May 2023 at 11:58am |
This is all I have right now, I will get a photo of the tag in a bit and send it over. uploads/23903/pump.jpg
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Posted: 26 May 2023 at 12:06pm |
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The tag that is scratched off in the photo is the governor tag; not what we are after. That looks to be an AMBAC, (American Bosch) pump and I do believe they vendored to Allis back in those days. The tag I'm looking for lists pump number, engine timing, and whether port closing, or port opening. Usually an aluminum tag just as the one on the governor housing shown in your photo.
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A career built on repairing and improving engineering design deficiencies, shortcomings, and failures over 50 years now.
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allisdozer
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Posted: 26 May 2023 at 12:28pm |
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There is a tag on the bottom left of the pump, I will get pictures of it and the numbers off it.
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Posted: 29 May 2023 at 9:47am |
This is what you are after without the AC name on it:
Take both halves of your coupler into a bearing distributor and they should be able to set you up. Many coupler halves differ from one another. There will also be alpha numerics stamped into the coupler halves which identify them and you need the jaw insert.
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A career built on repairing and improving engineering design deficiencies, shortcomings, and failures over 50 years now.
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allisdozer
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Posted: 29 May 2023 at 8:22pm |
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Posted: 29 May 2023 at 9:28pm |
That is what was needed. An American Bosch 6BB series pump with 12mm plungers and barrels timed for port closing. I don't have an Allis, or appropriate manual for that pump but it can be chased down for input shaft taper, or style with the numbers. Since you only need the rubber "spider" I would chase the link I posted earlier as I'm thinking they will be able to help you out. Boston gear was probably the original supplier to AC when the tractor was new.
I'll be out of town for the next two days but if you've not had any luck by my return, I'll engage with my buddy at the injection shop.
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A career built on repairing and improving engineering design deficiencies, shortcomings, and failures over 50 years now.
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