Farm Equipment - AC - WD45 OIl pressure

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AC - WD45 OIl pressure

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Category: Allis Chalmers
Forum Name: Farm Equipment
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URL: https://www.allischalmers.com/forum/forum_posts.asp?TID=20606
Printed Date: 11 Feb 2025 at 2:25am
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Topic: AC - WD45 OIl pressure

Posted By: Stanley
Subject: AC - WD45 OIl pressure
Date Posted: 09 Nov 2010 at 8:26pm

I have a WD45 that starts w/ decent oil pressure and after it "warns up" the pressure drops below the "N" on the gauge.
What is the recommended oil type/weight and filter for this tractor. Also I've read on this site that the tube/pipe in the oil filter needs to be a certain length.
I have added a washer to the oil pressure relief valve and there is little if any improvement.
Any suggestions will be appreciated.

Replies:

Posted By: Brian Jasper co. Ia
Date Posted: 09 Nov 2010 at 9:10pm

Good oil pressure cold that goes away warm usually means worn bearings. Time for an overhaul...

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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford

Posted By: Stanley
Date Posted: 09 Nov 2010 at 9:49pm

I was afraid of that.

Posted By: MACK
Date Posted: 09 Nov 2010 at 9:50pm

As long as it is in the normal range it is ok. MACK

Posted By: wjohn
Date Posted: 09 Nov 2010 at 10:30pm

My father's WD has the same problem as your 45, except Dad refuses to believe it's a problem. It still runs which to him means it must be fine. Can't say I didn't warn him!

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1939 B, 1940 B, 1941 WC, 1951 WD, 1952 CA, 1956 WD-45

Posted By: Glockhead SWMI
Date Posted: 10 Nov 2010 at 3:05am

Oil pressure will drop some as the engine warms up. It is normal. As long as it doesn't drop too low you will be fine.

Posted By: KC-WD45
Date Posted: 10 Nov 2010 at 9:53am

What you might think of as low might actually be normal. According to the manual 12 pounds is normal. After I rebuilt mine I was expecting to see quite a bit more than that since 12 is about at the bottom of the gauge but I was relieved to find out that 12 is what it was supposed to be. You might hook a gauge up to it and see how many pounds you have before you tear it down. Could save you a few bucks!

Posted By: KY
Date Posted: 10 Nov 2010 at 2:22pm

Use 15-40 and a quart of lucas. Make sure tube is not stoped up or pushed down too far.

Posted By: mlpankey
Date Posted: 10 Nov 2010 at 3:28pm

try straight weight motor oil start with 30 go to 50 weight

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people if they don't already know it you can't tell them. quote yogi berra

Posted By: KY
Date Posted: 10 Nov 2010 at 3:40pm

That works too, any thicker oil. The lucas really made a difference in one for me.

Posted By: ALinIL
Date Posted: 10 Nov 2010 at 4:18pm

Stanley - I would check the guage. My 45 was showing "N" on the guage and when hot on a 95 degree day,the guage hardly registered. I replaced the guage with a 15# guage and have had no problems since. Cold is about 13# and on a 95 degree day its about 9-10#. - AL

Posted By: pineyjd
Date Posted: 11 Nov 2010 at 3:17am

My I40 showed low pressure,took tube to gauge off & cleaned,now shows 20-25,was showing 5

Posted By: Stanley
Date Posted: 11 Nov 2010 at 6:41pm

Thanks for all your help.

Posted By: Don(MO)
Date Posted: 11 Nov 2010 at 8:29pm

Stanley take a look at this info Jim from OK Tractor posted three years or so back about oil filters. Don

http://www.oktractor.com/filter/ - http://www.oktractor.com/filter/

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3 WD45's with power steering,G,D15 fork lift,D19, W-Speed Patrol, "A" Gleaner with a 330 corn head,"66" combine,roto-baler, and lots of Snap Coupler implements to make them work for their keep.

Posted By: Stanley
Date Posted: 12 Nov 2010 at 10:18am

Good information Don, Thanks. Where can I find an "old Style" filter? Any suggestions?

Posted By: KY
Date Posted: 12 Nov 2010 at 12:34pm

Yes your agco dealer will have them. Baldwin filter co. Also makes em.

Posted By: Brian Jasper co. Ia
Date Posted: 12 Nov 2010 at 3:33pm

Those "new" style filters should be out of the parts system by now. That's been more than a few years back if I remember correctly. I've been told that if the oil pressure gauge moves at all, they will live.

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"Any man who thinks he can be happy and prosperous by letting the government take care of him better take a closer look at the American Indian." Henry Ford

Posted By: bluebanshee
Date Posted: 12 Nov 2010 at 4:22pm

I think Baldwin makes filters for Hastings so they should be the same. I have a hasting one and it is the correct type of filter. Last time I bought a filter it was cheaper at TSC than advance.