PD warning light
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=198966
Printed Date: 14 Nov 2024 at 8:28am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: PD warning light
Posted By: Marlyn nwia
Subject: PD warning light
Date Posted: 30 Dec 2023 at 6:55pm
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My D 17 IV has a PD pressure warning light: where as my D 15 II does not. same vintage, what is the engineering rationale for one having it and not the other?
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Replies:
Posted By: tbran
Date Posted: 30 Dec 2023 at 7:00pm
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Well, be kind of hard to put one on a D15 as the plumbing is internal - the IV has extermal lines and filter - EZ to put a sending unit there. Some D15's show a cooler and the industrial unit had external cooler and plumbing - just no sender. Rationale is usually cost... ------------- When told "it's not the money,it's the principle", remember, it's always the money.. |
Posted By: DrAllis
Date Posted: 30 Dec 2023 at 8:59pm
| The light was for the Power Director filter, of which a D-15 doesn't have a Power Director filter. |
Posted By: EPALLIS
Date Posted: 31 Dec 2023 at 9:26am
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A long time back, the good Dr responded to my question about the D-17 Power Director red light. I kept the response because it is spot on! See below. Thanks again Dr. Allis. Much appreciated and Happy New Year! |
Posted By: EPALLIS
Date Posted: 31 Dec 2023 at 9:29am
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As quoted from Dr. Allis: Only D-17 series 3 and 4 models had that red light. The D-19's also had it. When it is OFF, that indicates that the internal lube pump is circulating hydraulic oil to the filter (under the battery tray). It comes ON when the foot clutch is pushed in (lube pump stops rotating) or when the engine is idling with hot hydraulic oil. When cold and idling, the light is probably OFF. If the hydraulic compartment is extremely low on oil, I would expect it to be on quite a bit.
Edited by DrAllis - 19 Dec 2021 at 4:47pm |