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Allis Chalmers Discussion Forum
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B Model Oil Pressure

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Jack M

08-26-2003 07:32:47




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I've just bought a 39 B that looks as if it could stand an improvment in oil pressure. I've seen the oil filter "feed tube" mentioned in legacy discussions here. I don't know if the "feed tube" is missing on my new B, and the tractor's in another state so I cannot run out to the barn to have a look.

Where and how is this "feed tube" installed? What material and size is it?

Seems like I remember something like that on my 39 and 40 Fords.

Thank you,

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bob b.

10-01-2003 16:27:40




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 Re: Re: B Model Oil Pressure in reply to Jim Danforth, 08-26-2003 21:30:06  
I was having trouble with the oil pressure on my 49 c also. I had been using napa 1101 filters and I read a while back about them and they recomended to try a fram filter. Now the oil pressure is back to where it is susposed to be. No more NAPA filters for me.



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jack m

08-27-2003 04:33:14




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 Re: Re: B Model Oil Pressure in reply to Jim Danforth, 08-26-2003 21:30:06  

thank you sir



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DPOST

08-26-2003 15:04:47




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 Re: B Model Oil Pressure in reply to Jack M, 08-26-2003 07:32:47  
Jack;

As long as you are worrieid about oil pressure, check out that darn little oil line that goes up to the head from somewhere around the oil guage. This line supplies the only oil going to the head.

The amount of oil going to the head in somewhat metered by the small size of the line ( 1/8 inch th CU tubing I think ). The problem is that the line tends to plug, particulary with low oil pressure.

I have seen this cause two problems;

a.) The rockers and the rocker shaft wear out. When the rocker shaft wears out things degrade quickly. Only the back end of the head gets any lubrication. The oil to the front rockers goes through the rocker shaft and all leaks out before it gets there.
b. If the engine don't get used much there isn't enough oil around to keep things from rusting so you risk getting a stuck valve if its dry.

I recommend pulling the line at the head and letting it run a bit to be sure oil comes out. I do this at least once a year. I also recomend pulling the filler/breather cap off the valve cover and looking down the hole every now and then. It shoud always be wet with oil.

Have fun with the B

D.D.Post

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Jack M

08-26-2003 15:52:47




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 Re: Re: B Model Oil Pressure in reply to DPOST, 08-26-2003 15:04:47  

Good tip to pull the feed line, Mr. Post. I'll do it.

Thank you sir



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Aaron

08-26-2003 12:03:21




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 Re: B Model Oil Pressure in reply to Jack M, 08-26-2003 07:32:47  
First thing to try is be sure you are using an Allis CHalmers filter. Other brands will not work. The tube is a hollow stem with a hole at the bottom that stands vertical in the filter element and goes up the center of the filter. Be sure it is not plugged as either end, or that will also affect your pressure. It is also best to run an Allis pressure gauge as well. Best of luck!



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Steve in N.J.

08-26-2003 09:12:02




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 Re: B Model Oil Pressure in reply to Jack M, 08-26-2003 07:32:47  
Jack,
It might have a Wix or Napa oil filter on it which we were talking about a couple posts down. Next time you work on your new B, check out the filter. That might be the culprit! Know the feeling about having your tractor in another state! I live in Jersey, and it was a 5 hour ride to N.Y. state to play with my B model too! LOL!
Take care of that B! Bill Long will be proud of ya, right Bill?
Steve/B&B Custom Circuits

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Ronnie in TX.

08-26-2003 15:47:31




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 Re: Re: B Model Oil Pressure in reply to Steve in N.J., 08-26-2003 09:12:02  

Rod (NH) on the oil filter.



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Jack M

08-26-2003 16:14:55




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 Re: Re: Re: B Model Oil Pressure in reply to Ronnie in TX. , 08-26-2003 15:47:31  

Teriffic study, thanks to Rod for conducting it and thanks to you for pointing me to the work.

OK, so no new style NAPA 1101 or WIX 51101 filters. Where does that leave someone (me, perhaps) who wants to change the filter?

Which filter to use?

Thanks for the reply



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bw in mo

08-26-2003 18:28:42




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 Re: Re: Re: Re: B Model Oil Pressure in reply to Jack M, 08-26-2003 16:14:55  
They still make FRAM C159 filter still holds good presure on my WC, WD, WD45 they have changed the color to white ,was orange.



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jack m

08-27-2003 04:37:29




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 Re: Re: Re: Re: Re: B Model Oil Pressure in reply to bw in mo, 08-26-2003 18:28:42  

thanks for the tip, bw



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Ronnie ni TX.

08-26-2003 17:42:40




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 Re: Re: Re: Re: B Model Oil Pressure in reply to Jack M, 08-26-2003 16:14:55  

Fram oil fulter C159



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jack m

08-27-2003 04:38:13




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 Re: Re: Re: Re: Re: B Model Oil Pressure in reply to Ronnie ni TX., 08-26-2003 17:42:40  

thanks for the tip, ronnie



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benney

08-27-2003 18:27:59




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 Re: Re: Re: Re: Re: Re: B Model Oil Pressure in reply to jack m, 08-27-2003 04:38:13  
ok



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Ronnie in TX.

08-27-2003 19:16:12




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 Re: Re: Re: Re: Re: Re: Re: B Model Oil Pressure in reply to benney, 08-27-2003 18:27:59  

OK to



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