D15 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=30143
Printed Date: 05 Mar 2025 at 10:05pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: D15 oil pressure
Posted By: Chalmersbob
Subject: D15 oil pressure
Date Posted: 02 May 2011 at 8:40pm
|
I got chance to run my "new to me" D15 and have oil pressure issues. When I start it I have 20 lbs pressure, but after it runs 20 - 30 minutes the oil pressure drops to almost 0. Most of my running was at about 1/4 throttle, and the oil pressure would come up to about 8 lbs if I opened the throttle wider, sometimes, but not always. If I shut it down for 15 minutes and then restart it the oil pressure will be at about 10 lbs. I'm running 15-40 oil in it and have a new NAPA filter on it. What is my problem?
Thanks, Bob
|
Replies:
Posted By: Chalmersbob
Date Posted: 02 May 2011 at 8:43pm
|
didn't mention, early D15, serial # D152472
|
Posted By: Orange Blood
Date Posted: 02 May 2011 at 8:51pm
1st thing I would do, is put a test guage on it, to verify what the other guage is reading, may be a bad guage, may not. You won't know for sure, unless you do. If you don't have a test guage, most any autoparts store should have a 15 dollar variety, and a couple fittings to get you going. That's the first thing I do, when I start to see funny readings, I have replaced at least two bad guages, that had I trusted, would have spent big money fixing nothing.
-------------
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
|
Posted By: allis restorer
Date Posted: 02 May 2011 at 8:59pm
|
I would also try a different oil filter. Steve
-------------
Go orange or Go home!!
|
Posted By: Chalmersbob
Date Posted: 03 May 2011 at 9:08pm
|
I installed a new gauge today, The readings are much better. It started at 20 and then dropped. Most of the time it was around 10 lbs, dropping to 5 and the at times up to 15.
Is there a special type of oil filter on these as on the earlier D14, B C Wc WD.
I have a napa Gold on it. Thanks Bob
|
Posted By: allis restorer
Date Posted: 03 May 2011 at 9:11pm
Use a Fram oil filter, they work the best, I dont know off hand which is the one for the D15, im sure some one will help me out on this one. Steve
-------------
Go orange or Go home!!
|
Posted By: allis restorer
Date Posted: 03 May 2011 at 9:21pm
Here try this http://www.framcatalog.com/Application.aspx?b=F - http://www.framcatalog.com/Application.aspx?b=F
I think its a C159 Im not sure what series or year yours is but this has for all allis chalmers
-------------
Go orange or Go home!!
|
Posted By: CTuckerNWIL
Date Posted: 03 May 2011 at 9:38pm
Sounds about right for a well broken in AC engine. I had a knock in my old 318 62 Dart, mostly with cold starts so I bought some Mystic 15W50 oil at Farm and Fleet. The cold start knock all but went away.
-------------
http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com
Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF
|
Posted By: Jack(Ky)
Date Posted: 03 May 2011 at 9:48pm
|
There is not one thing wrong with the Napa filter unless you happen to have one that got out on the market when Wix changed the design for a short period of time. If it is 7011 Napa it is the good one. Make sure the tube is in the filter, sometimes these come out when you remove the filter and get thrown away. When I bought my D14 30 years ago I made the mistake of putting a new gauge on it and I used an eighty pounder and my pressure did just like yours. You need a gauge that is made for low pressure and it will read fine. I got me one from A&I for it and it works fine. The 80 pound gauge just won't read the low numbers that these old tractors run on. An old AC guy I know always said if an old Allis had good pressure when it started up it would be fine.JP
|
Posted By: DrAllis
Date Posted: 03 May 2011 at 9:59pm
|
Any D15 gas engine doesn't use the filter with the tube inside it.(WC-WD-WD45-D14)....they use a full-flow filter like a PH8A Fram.
|
Posted By: RichinWis
Date Posted: 03 May 2011 at 10:00pm
|
The D15's even the earlier ones had the full flow oil system so the oil filter on a D15 is just like a automobile filter. Are you sure that you have a D15 engine or has it been swapped with an earlier D14 engine with the back pressure design. HTH
|
Posted By: LannyMTN
Date Posted: 03 May 2011 at 10:21pm
|
The D-15's all came new with full-flow filtering. Fram PH8A, Motorcraft FL-1A, AC-PF2, etc. are all filters that will work well for you. If there is little or no blow-by, my opinion is it was over-hauled, and cam bearings weren't replaced. If there's lots of blow-by, you may be ready for a rebuild, and by all means replace the cam bearings. Lanny Mid TN
|
Posted By: Robert Mull Georgia
Date Posted: 04 May 2011 at 7:17am
|
I thought that the D-15 series 1 had the 149 cubic inch engine same as a D-14 and the old style oil system like the ca, wd, wd45. I know mine a D-15 Series 2 with 160 cubic inch has the full flow filtering and uses a Fram PH8A filter.
|
Posted By: RichinWis
Date Posted: 04 May 2011 at 9:08am
|
Robert, When they started making the series 1 D15 they changed the engine design to a full flow oil system, they also upped the horsepower rating somewhere around another 4 or 5 HP made a good tractor even better. HTH Rich
|
Posted By: Chalmersbob
Date Posted: 04 May 2011 at 10:23pm
|
The Fram site says to use a PB50 filter .
Thanks for all of your replies.
I don't think the engine was rebuilt. The hour meter shows 2140 hrs on it, which could be wrong. The drawbar hole is egg shaped, so it did some work. Bob
|
Posted By: allis restorer
Date Posted: 04 May 2011 at 10:38pm
|
Yeah im sure the PB50 is the same as the PH8A, its probably a new number now, but the same filter. Steve
-------------
Go orange or Go home!!
|
|