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gottfriedb 
Silver Level
Joined: 05 Dec 2009
Location: Montpelier, VA
Points: 63
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 Topic: B Milky Hydraulic oil
Posted: 25 Apr 2011 at 9:51am |
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?
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My first tractor - 1955 B
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Orange Blood
Orange Level
Joined: 29 Nov 2010
Location: ColoradoSprings
Points: 4053
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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.
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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
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gottfriedb
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Joined: 05 Dec 2009
Location: Montpelier, VA
Points: 63
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Posted: 25 Apr 2011 at 2:30pm |
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?
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My first tractor - 1955 B
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cmsmoke
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Joined: 19 Feb 2011
Location: Johnstown, Pa
Points: 118
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Posted: 25 Apr 2011 at 2:49pm |
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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pumpkin man
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Joined: 10 Apr 2010
Location: Michigan
Points: 106
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Posted: 25 Apr 2011 at 5:43pm |
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did you drain housing at 3 places or just 1 ?
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CTuckerNWIL
Orange Level
Joined: 11 Sep 2009
Location: NW Illinois
Points: 22824
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Posted: 25 Apr 2011 at 6:30pm |
 pumpkin man wrote:
did you drain housing at 3 places or just 1 ? |
I believe you are thinking of the WD or 45.
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dannyraddatz
Orange Level
Joined: 12 Sep 2009
Location: Plainfield, Ill
Points: 848
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Posted: 25 Apr 2011 at 7:41pm |
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.
Edited by dannyraddatz - 25 Apr 2011 at 7:42pm
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Danny Raddatz
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steve(ill)
Orange Level Access
Joined: 11 Sep 2009
Location: illinois
Points: 83991
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Posted: 25 Apr 2011 at 7:48pm |
-- 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.
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Like them all, but love the "B"s.
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gottfriedb
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Joined: 05 Dec 2009
Location: Montpelier, VA
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Posted: 26 Apr 2011 at 8:51am |
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?
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My first tractor - 1955 B
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pumpkin man
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Joined: 10 Apr 2010
Location: Michigan
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Posted: 26 Apr 2011 at 10:32am |
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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beeman
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Joined: 02 Jan 2011
Location: Alabama
Points: 230
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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.
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1949 B 3930 Ford- Have owned other Orange ,green,red,yellow,dark green tractors and equipment.
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gottfriedb
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Joined: 05 Dec 2009
Location: Montpelier, VA
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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?
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My first tractor - 1955 B
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Chalmersbob
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Joined: 11 Sep 2009
Location: Pennsylvania
Points: 2122
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Posted: 29 Apr 2011 at 9:34pm |
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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