Farm Equipment - WD45 - Very High Oil Pressure

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WD45 - Very High Oil Pressure

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=203707
Printed Date: 18 Oct 2024 at 5:29am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com

Topic: WD45 - Very High Oil Pressure

Posted By: StanGreen
Subject: WD45 - Very High Oil Pressure
Date Posted: 17 Oct 2024 at 8:52pm

On my WD45 today, I notices the oil pressure gauge is pegged to the high side at idle. I had the motor rebuilt last year. The oil does not look like it is over filled. Is it OK to have this high of oil pressure? If not, what would be my first step to address this issue?

Replies:

Posted By: steve(ill)
Date Posted: 17 Oct 2024 at 9:00pm

get a good gauge and read the REAL pressure..

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Like them all, but love the "B"s.

Posted By: Eric B
Date Posted: 17 Oct 2024 at 9:12pm

I have the same issue with one of my 201 engines. I put a real gauge on there and it reads 90 lbs. I had to believe it reading a real gauge. Once the engine warms up the original gauge points straight up in the normal range (still about 45 lbs on the real gauge). I have now changed oil putting much thinner oil in it. The gauge still goes over to the far end on cold start up but takes shorter time to come back to the middle. A mystery to me.

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Currently- WD,WC,3WF's,2 D14's B. Previously- I 600,TL745,200,FL9,FR12,H3,816 LBH. Earth has no sorrow that Heaven cannot heal!

Posted By: jvin248
Date Posted: 17 Oct 2024 at 9:26pm

Gauges fail. Verify and if bad then replace it.

Posted By: steve(ill)
Date Posted: 17 Oct 2024 at 9:49pm

does the "Rebuilt" motor use the old BYPASS jar lip thread filter.... or the PH8 type automotive full flow filter ??

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Like them all, but love the "B"s.

Posted By: DrAllis
Date Posted: 17 Oct 2024 at 10:56pm

Remove the filter base tube and clean it out by ramming a piece of wire down thru it and blowing air into it.