Farm Equipment - D-15 oil pressure

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D-15 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=17384
Printed Date: 05 Feb 2025 at 10:10pm
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Topic: D-15 oil pressure

Posted By: DAM
Subject: D-15 oil pressure
Date Posted: 29 Aug 2010 at 6:18pm

Does anyone know what I sould expect to have for oil pressure on a D-15 Series II with the 160 cu in engine?

Replies:

Posted By: Burgie
Date Posted: 30 Aug 2010 at 5:38am

Mine runs on the "A" in normal.

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"Burgie"

Posted By: DrAllis
Date Posted: 30 Aug 2010 at 6:55am

30 to 32 psi at full throttle.

Posted By: DAM
Date Posted: 30 Aug 2010 at 9:50am

Mine is running about 25 psig idling cold. After using the brush chopper for a while I noticed it was only about 5 psig. If I throttled it back down to idle, it went down to almost nothing.

Posted By: firebrick43
Date Posted: 30 Aug 2010 at 10:22am

Yea, I would be looking into that. You might have a plugged tube/gauge so it might be wise to buy/barrow a test gauge and see if there is a difference in readings before doing anything else. I don't know if that model still uses the bypass filter or switched to the full flow, but if it uses the bypass make sure the vertical tube thats in the filter base is still there and didn't come out with the last oil filter change. Good luck

Posted By: LannyMTN
Date Posted: 30 Aug 2010 at 12:43pm

Sounds like mine. It was overhauled before I got it, they didn't replace the cam bearings. It is a full flow filtration system. My solution is to use Rotella T 30 weight, and a quart of Lucas every oil change. I have used the tractor very hard this summer on the brush hog, reclaiming CRP land, and have had no problems. The engine uses no oil, and has great power. However, be forewarned , rods for that engine are about $200 the last,time I saw

something posted about them. Also when you have been working it hard, especially brush hogging, check your radiator screen often, and let it idle at 1/4 throttle for few minutes before pushing throttle completely up. HTH

Lanny