B Milky Hydraulic oil
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=29726
Printed Date: 04 Mar 2025 at 10:13pm
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Topic: B Milky Hydraulic oil
Posted By: gottfriedb
Subject: B Milky Hydraulic oil
Date Posted: 25 Apr 2011 at 9:51am
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My 1955 B hydraulic oil was white/milky colored, which I always thought meant that water was in my fluid. I change the oil with Warren Heavy Duty Tractor/Hydraulic oil from Agri Supply. I ran the tractor and the hydraulic pump for several minutes. When I engage the hydraulic pump (release the clutch) I heard a clunking noise, but the hydraulic lift worked fine. I shut the tractor off and checked the hydraulic oil again - it was milky again. Appears that the fluid is whipped up with lots of air.
Is this normal or do I still have residual water that requires another fluid change? Or do I have a major problem on my hands?
------------- My first tractor - 1955 B |
Replies:
Posted By: Orange Blood
Date Posted: 25 Apr 2011 at 10:41am
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It could be trapped water, that another change will finally get out, but I wonder if the pump is pulling air, and what you are seeing is air entrained in the oil, I would let it sit overnight, and ppull the stick again, before dumping the oilk, just to be sure. ------------- Still in use: HD7 WC C CA WD 2-WD45 WD45LP WD45D D14 3-D17 D17LP 2-D19D D19LP 190XTD 190XTLP 720 D21 220 7020 7030 7040 7045 3-7060 Projects: 3-U UC 2-G 2-B 2-C CA 7-WC RC WDLP WF D14 D21 210 7045 N7 |
Posted By: gottfriedb
Date Posted: 25 Apr 2011 at 2:30pm
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Thanks Orange Blood. I talked to a mechanic here at work who said it may take 3 ro 4 changes to get all the water out. I'll check the oil again tonight.
Is it ok for the hydraulic pump to make a clatter when the clutch is released? ------------- My first tractor - 1955 B |
Posted By: cmsmoke
Date Posted: 25 Apr 2011 at 2:49pm
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Leave it sit overnight, if there is water in it some should settle to the bottom. Tomorrow morning pull the drain plug and look for water. It will come out first followed by the oil. It could change fast, so kepp a good eye on it.
You can also loosen the drain plug and wiggle it. There will be water beads that form around it if it does have water in it.
Airated oil can easliy be misread as having water in it, especially if it is clean oil.
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Posted By: pumpkin man
Date Posted: 25 Apr 2011 at 5:43pm
| did you drain housing at 3 places or just 1 ? |
Posted By: CTuckerNWIL
Date Posted: 25 Apr 2011 at 6:30pm
I believe you are thinking of the WD or 45. ------------- http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF |
pumpkin man wrote:Posted By: dannyraddatz
Date Posted: 25 Apr 2011 at 7:41pm
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When I replaced my hydraulic fluid in my 1954 WD45 I used Farm and Fleet Hydraulic Fluid that meets Allis-Chalmers specification 821 on the container. ------------- Danny Raddatz |
Posted By: steve(ill)
Date Posted: 25 Apr 2011 at 7:48pm
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-- it still has water in it.
--the B has 3 seperate drain plugs
--when you drain the system, there will still be 1/2 quart left that will turn the new oil "white"
--hydraulic oil normally keeps water in suspension, it may not seperate out overnight
--engine oils will seperate from water when they stand overnight.
--new oil should look "less white' than original drain... it gets better with second drain. ------------- Like them all, but love the "B"s. |
Posted By: gottfriedb
Date Posted: 26 Apr 2011 at 8:51am
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Thanks guys. I checked the fluid yesterday after the B has sit for 2 days and the oil was clear, as I would expect. So, the pump must aerate the oil.
As for the 3 points to drain, I'll have to go look again because I only drained 1 point. Are the other 2 points on the hydraulic cylinders? ------------- My first tractor - 1955 B |
Posted By: pumpkin man
Date Posted: 26 Apr 2011 at 10:32am
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drain plugs on the bottom of the trans - axel -and the pto housings.- flush the housing with a gallon or so of fuel oil and drain
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Posted By: beeman
Date Posted: 26 Apr 2011 at 8:47pm
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Check the rubber boot/cap around the shift lever for cracks,etc. Rain water or from washing the tractor can slip past , alittle at a time. ------------- 1949 B 3930 Ford- Have owned other Orange ,green,red,yellow,dark green tractors and equipment. |
Posted By: gottfriedb
Date Posted: 29 Apr 2011 at 12:51pm
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I only see 2 drain plugs, 1 under the transaxle and 1 under the PTO. Where is the 3rd drain plug or is there only 2? ------------- My first tractor - 1955 B |
Posted By: Chalmersbob
Date Posted: 29 Apr 2011 at 9:34pm
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NO, there are 3 Just get under there and look.
1 on the PTO, 1 on the rear end housing, and 1 on the transmission housing.
You must drain all three and then it's good to flush with kero before adding new fluid. Bob
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