WD oil pressure and oil leak questions
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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=132459
Printed Date: 06 Jun 2025 at 7:49pm
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Topic: WD oil pressure and oil leak questions
Posted By: Pete32
Subject: WD oil pressure and oil leak questions
Date Posted: 10 Dec 2016 at 8:15pm
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Hi everyone, I'm new to the site and tractors. Thank you for all the great information and knowledge you share. I have 2 questions about my 51 WD that I just bought. When I got it the oil pressure gauge wasn't moving. It is an allis chalmers "NORMAL" pressure gauge. I unscrewed the gauge and hit the back side with a little compressed air. The needle freed up. When I put it back on the mount and started the tractor, the needle moved between the "OR" in Normal. When I shut the tractor off, the needle moved back down. Should I still replace the gauge or do you think it's good to go? Also, the oil pan was leaking in the front and back (curved sides). I haven't noticed it leaking anymore. Is it possible for the oil leak to stop on it's own? Thanks again
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Replies:
Posted By: DiyDave
Date Posted: 10 Dec 2016 at 8:57pm
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I'd keep using it, ORM is about normal, for that vintage of motor. You have to remember the rule of thumb of 10 lbs/1000revs, most that motor puts out would be about 25 PSI. both probs could just be from a long nap...
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Posted By: Chalmersbob
Date Posted: 10 Dec 2016 at 9:00pm
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sounds like your gauge is working. OR is the normal pressure range and it can run to the N and still be ok. The oil leaks probably will NOT seal themselves. Watch the video on this site about putting a gasket on. A lot of gaskets are put on wrong and leak Bob
------------- 4 B's, 1 C's,3 CA's, 2 G's WD, D14, D15, B-1, B10, B12, 712S, |
Posted By: Pete32
Date Posted: 10 Dec 2016 at 9:05pm
| thank you |
Posted By: MACK
Date Posted: 10 Dec 2016 at 9:13pm
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I believe 7-12 LBs are about max. MACK
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Posted By: DougS
Date Posted: 11 Dec 2016 at 7:11am
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Any pressure at all is good. Just beware of low oil pressure being caused by the wrong oil filter. |
Posted By: fixer1958
Date Posted: 11 Dec 2016 at 7:19am
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First WD I had was about 3 lbs. The one I have now is about 6-7 lbs. Father in laws 45 runs 17 on a new overhaul. If they don't leak somewhere something is wrong. Unless it is pouring out I would just use it. |
Posted By: Stan IL&TN
Date Posted: 11 Dec 2016 at 10:33am
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It is allowed to leak for it's age and there is no guarantee that after you replace the gasket that it will not still leak. Any reading you get on the oil pressure gauge means all is well so unless it keeps sticking I would not replace it. ------------- 1957 WD45 dad's first AC 1968 one-seventy 1956 F40 Ferguson |
Posted By: Sugarmaker
Date Posted: 11 Dec 2016 at 5:00pm
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We need pictures! Welcome to the forum! Your doing good! Oil pressure sounds OK. And yes they leak. Sounds like you need to pull the pan and do the gasket thing. Check Dons MO's video on oil pan gasket. I did both mine with out pulling the engines, But as Don will tell you the best way is to pull the engine. Regards, Chris ------------- D17 1958 (NFE), WD45 1954 (NFE), WD 1952 (NFE), WD 1950 (WFE), Allis F-40 forklift, Allis CA, Allis D14, Ford Jubilee, Many IH Cub Cadets, 32 Ford Dump, 65 Comet. |
Posted By: Ted J
Date Posted: 11 Dec 2016 at 5:26pm
Yeah, when you get old, you'll have some leaks too......take it from someone who knows!  Here is the thread of the oil pan replacement.....how bad is it leaking??  As long as the needle is moving on the oil pressure gauge, it should be good. When you shut it off, does it drop down to the left? There's a LOT of stuff to help you in the following; http://www.allischalmers.com/forum/forum_topics.asp?FID=18&title=farm-equipment-knowledge-base" rel="nofollow - Farm Equipment -Knowledge Base and the http://www.allischalmers.com/forum/forum_topics.asp?FID=8&title=forum-talk" rel="nofollow - Forum Talk If you need anything, just take a look. ------------- "Allis-Express" 19?? WC / 1941 C / 1952 CA / 1956 WD45 / 1957 WD45 / 1958 D-17 |
Posted By: Pete32
Date Posted: 12 Dec 2016 at 12:44pm
| Great video, thanks everyone |
Posted By: Alex09(WI)
Date Posted: 14 Dec 2016 at 11:05am
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Be sure it is the oil pan gasket before you go all out on replacing it.
If the rear main seal leaks, it looks just like the pan gasket is
leaking. If you pull the engine, might consider replacing the crank
seals at the same time.
------------- www.awtractor.com A&W TRACTOR 920-598-1287 KEEPING ALLIS-CHALMERS IN THE FIELDS THROUGH THE 21ST CENTURY |