Farm Equipment - Allis 426 help needed.please.

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Allis 426 help needed.please.

Printed From: Unofficial Allis
Category: Allis Chalmers
Forum Name: Farm Equipment
Forum Description: everything about Allis-Chalmers farm equipment
URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=48231
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Topic: Allis 426 help needed.please.

Posted By: david.bz
Subject: Allis 426 help needed.please.
Date Posted: 30 Mar 2012 at 11:06pm

Hi there. I have a 426 Allis in an R6 Gleaner. I seem to be making oil in the crankcase. I can't smell any diesel. The oil feels like oil and crack the plug with no signs of water in oil. I have not yet changed oil on this motor and without changing oil, can someone tell me how long the tube that holds the dipstick is suppose to be? The reason I ask is because I measure the dipstick outside the tube and it reaches almost to the bottom of the pan. It looks like to me, if the oil is at the full mark on the dipstick it would be very low in the pan. Not sure, therefore the question. Thanks!
p.s. When I pulled the dipstick the first time it had a little bend at the tip.

Replies:

Posted By: MACK
Date Posted: 31 Mar 2012 at 7:03am

Leaking water around a sleeve oring. MACK

Posted By: Tony Elo
Date Posted: 31 Mar 2012 at 7:19am

what I would do is change the oil,check your owners manual to see what the capacity is.Put that much oil in the engine and run it,see where it comes to on the dipstick.If you think something is in your oil,you can have it sampled and they can find any traces of fuel,water bearing shavings and whatever else could contaminate your oil,Tony

Posted By: Hurst
Date Posted: 31 Mar 2012 at 8:21am

If you change the oil, do an oil analysis. That will tell you what you have in the oil (antifreeze, diesel, hydraulic oil, etc) and help point you in the right direction for repairing. And they cost a lot less than an hour of shop time looking for the problem.

Hurst

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1979 Allis Chalmers 7000
5800 Hours

Posted By: DrAllis
Date Posted: 31 Mar 2012 at 9:56am

If there is coolant in your engine oil, there will be a whipped cream like slime on your oil fill cap on top of the valve cover. If there is coolant in your engine oil, the radiator will also be LOW. Change engine oil and with 2 new filters should be one quart less than five gallons.

Posted By: stray
Date Posted: 31 Mar 2012 at 9:25pm

I agree with Hurst you can by a analysis kit from most truck shops around here is in the $25.00 range. You guest collect the oil as you drain it, fill out the form and seal it in the shipping package with the provided label. and they will email you the results.

I forgot to say that the cost of purchasing the kit includes the lab fee.

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1969 190XT series 3

Posted By: david.bz
Date Posted: 31 Mar 2012 at 9:38pm

Hi there and thanks for all the responses. OK, I am about 1700 miles from a test kit. Not saying that it can't be gotten, but I have to import it. The oil shows no signs of water nor of diesel fuel. I have seen it happen where diesel will get into the oil. The water level stays at 1" below the rad cap. The changing the oil is what I was planning on doing with 19 qts of oil if there was no other plan. I will change the oil and filters and see where 19 qts puts me. As to the water leaking past the sleeve Oring, Can I test the cylinders without pulling the head?

Posted By: stray
Date Posted: 31 Mar 2012 at 10:18pm

If you have a coolant system pressure tester you can drain the oil, pressurize the coolant system with the oil drained and see if water comes out of the drain plug. That is the only way I can think of to check the orings with out pulling them out.

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1969 190XT series 3

Posted By: david.bz
Date Posted: 31 Mar 2012 at 11:43pm

I do have a pressure tester. I think
i will try that. Thanks

Posted By: DrAllis
Date Posted: 01 Apr 2012 at 7:59am

Don't waste your time with a pressure tester. If the radiator isn't going down, you're not losing coolant.....it's that simple. Also if there's no sign of shaving cream slime at the engine oil fill cap, it isn't coolant. Assuming it isn't coolant, it's got to be fuel and I've never had an AmBac injection pump do that to me, but it surely could. You could keep changing oil for a while if the fuel ingression is slow, but you'll eventually need the injection pump overhauled.