The D series PD 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=185230
Printed Date: 31 Aug 2025 at 3:10am
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Topic: The D series PD Light ??
Posted By: FREEDGUY
Subject: The D series PD Light ??
Date Posted: 19 Dec 2021 at 4:17pm
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Were the D series the only series that offered that light (and I assume it was only on the series 3) ?? We ran a series 2 '17,'15,'19 and I ran a D14 for a neighboring dairy farmer and NONE of these units had that light ??
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Replies:
Posted By: Gary
Date Posted: 19 Dec 2021 at 7:33pm
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where specifically is this PD Light located ? G |
Posted By: DSeries4
Date Posted: 19 Dec 2021 at 8:02pm
 Used on D17 Series 3 and 4. Might be on D19, but not positive. Definitely not used on smaller D series tractors. It comes on when you put your foot on the clutch.
------------- '49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080 |
Gary wrote:Posted By: Don Jr NY
Date Posted: 20 Dec 2021 at 4:45am
| Yes it is also on D-19 tractors. I have a gas and diesel model and they both have it. |
Posted By: FREEDGUY
Date Posted: 20 Dec 2021 at 5:47pm
Thanks D for the info, to the later poster with multiple '19's , ours did not have the light or a knockout in the panel for a light as pictured  Seems like there was a "green" light on the dash of some D series tractors, what did that symbolize ?
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Posted By: DSeries4
Date Posted: 20 Dec 2021 at 7:00pm
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FREEDGUY: only 1 D series model used a green light. That was the D21, it acted as a transmission fluid level indicator. It stays on all the time when your trans oil is at an acceptable level. No other D series tractor used a green light, although a few 100 models continued to use it - 200 and larger. ------------- '49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '63 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080 |
Posted By: Dave (NE)
Date Posted: 21 Dec 2021 at 2:17pm
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Gee, I have never noticed the light come on with my series IV. Maybe the bulb is burnt. What is the purpose for it either on or off? ------------- Do not argue with an idiot. He will drag you down to his level and beat you with experience. Mark Twain. |
Posted By: tbran
Date Posted: 21 Dec 2021 at 6:27pm
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the pump in front of the PD sends oil to the filter on the rh side behind engine and located in the base is an on/off contact switch that relays the hyd system has oil and lube pressure to lube and cool the clutches. Light is on when engine is off/key on, or foot clutch depressed. ------------- When told "it's not the money,it's the principle", remember, it's always the money.. |
Posted By: FREEDGUY
Date Posted: 22 Dec 2021 at 5:19pm
Thanks for the information D
 !! |
Posted By: Pat the Plumber CIL
Date Posted: 24 Dec 2021 at 12:03pm
I have a Ser.IV D-17 and always wondered about this light. So if the filter starts to block flow the light will stay on. ------------- You only need to know 3 things to be a plumber;Crap rolls down hill,Hot is on the left and Don't bite your fingernails 1964 D-17 SIV 3 Pt.WF,1964 D-15 Ser II 3pt.WF ,1960 D-17 SI NF,1956 WD 45 WF. |
Posted By: Ted in NE-OH
Date Posted: 24 Dec 2021 at 4:41pm
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I have one on my I-400 ------------- CA, WD, C, 3 Bs, 2 Gs, WC, I-400, 914 |