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Oliver, Cletrac, Co-op & Cockshutt Tractors Discussion Forum
:

1954 Oliver diesel Supper55 injector pump

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john r brooks

06-05-2019 21:46:26




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I am a new member and this is my first post
We bought lot 97 of Dorrington classic tractor auction in Geelong, Melbourne, Australia. I thought someone may be keen to view the catalogue. Lot 19 was my favourite.
It started and after a short run down to the hay shed the sump had 6 litres of diesel in it.
I have deduced the injector pump ( American Bosch) is leaking through the front gear cover into the sump.
To remove the pump for repairs is it a matter of unbolting the body from the engine or is there a procedure l must follow.
You advice will be greatly appreciated as a new member.

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Olliejunkie

06-07-2019 13:23:59




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 Re: 1954 Oliver diesel Supper55 injector pump in reply to john r brooks, 06-05-2019 21:46:26  
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Yes and have gotten my info from you primarily Dieseltech. You have helped me alot. Thank you again.



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Olliejunkie

06-07-2019 12:54:22




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 Re: 1954 Oliver diesel Supper55 injector pump in reply to john r brooks, 06-05-2019 21:46:26  
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It seemed to fix a few of mine but they got diesel in them while they were sitting I believe.



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J. Schwiebert

06-06-2019 17:36:37




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 Re: 1954 Oliver diesel Supper55 injector pump in reply to john r brooks, 06-05-2019 21:46:26  
O. K> There are 5 O-rings. Only one seals fuel! The O-ring Oliver junkie is talking about keeps OIL from getting into the fuel tank! The one in the timing window is the only one that seals fuel. That is not your problem. It may leak but not as fast as you say. I will send you an e-mail. You do NOT need to remove the pump to change any of the O-rings except the one that seals the pump to the timing cover and that seals oil and is not your problem!

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Dieseltech

06-07-2019 12:59:54




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 Re: 1954 Oliver diesel Supper55 injector pump in reply to J. Schwiebert, 06-06-2019 17:36:37  
There are THREE that seal fuel, the control unit O ring, the LOWER head O ring, and the thick O ring that seals both oil AND fuel to keep the two liquids separate. I've seen all three fail over time.



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Olliejunkie

06-06-2019 10:57:11




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 Re: 1954 Oliver diesel Supper55 injector pump in reply to john r brooks, 06-05-2019 21:46:26  
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If you take the rectangular cover off the side and there is diesel there it probably needs resealed. I usually start with the filter at the rear of the pump.

I think it's a 11/16. Unscrew it and you will probably need a pick to get the filter and o ring out. It's easy to replace and wont cost much. Good place to start. If you need pics or more info I can get them. Good luck.

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scootergmc

06-06-2019 07:56:13




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 Re: 1954 Oliver diesel Supper55 injector pump in reply to john r brooks, 06-05-2019 21:46:26  
I looked at it... what caught my eye was lot 95, the Super 88 standard. My goodness, sold for $18k+ USD. A couple people really wanted that thing. I'm going to start advertising our sale tractors in Australia. Ha!

For what it's worth, if it ran ok it's usually not the injection pump. I wouldn't touch it until I've started at the tank and worked my way to the pump. New bowl strainer (if equipped), new filters, blow out the lines all the way to the pump and get a rebuild kit for the lift pump (or a new one) and go from there. I looked at the pics of your tractor. It looks like an older restoration with a really good pressure wash before the sale. Who knows what was going on in its former life, or how long it sat. That poor broken three point arm though....

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oliverkid

06-06-2019 05:31:16




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 Re: 1954 Oliver diesel Supper55 injector pump in reply to john r brooks, 06-05-2019 21:46:26  
Those PSB pumps are kind of built like an engine. The lower housing is a crank case thatís lubricated by engine oil and the fuel is kept separate up top in the hydraulic head. Not saying they donít leak fuel into the lower housing but it isnít to common. You can pop the inspection cover off the side of it to check this. If fuel doesnít come pouring out your pump is fine. Like J said, it is very common if the tractor has been sitting for the diaphragms in the lift pump to dry rot and dump fuel directly in the oil pan. That is most likely your source.

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john r brooks

06-06-2019 06:33:09




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 Re: 1954 Oliver diesel Supper55 injector pump in reply to oliverkid, 06-06-2019 05:31:16  
Thank you both for your thoughts.
I can step you through my actions so far if you have the time.
I unbolted the lift pump first, it does not leak and the manual lever produces a good pulse. The sump still drained diesel, l disconnected the injector lines from the top of the Bosch pump and the diesel still drained from the sump plug.
With the fuel tank cock shut the flow stopped.
I will look for the side cover plate of the pump and check what happens

Did anyone look at the online auction catalogue.

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J. Schwiebert

06-06-2019 04:52:52




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 Re: 1954 Oliver diesel Supper55 injector pump in reply to john r brooks, 06-05-2019 21:46:26  
Your lift pump is most likely the problem not the injection pump.



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