Farm Equipment - D15 gas regulator mounting location

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D15 gas regulator mounting location

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=193815
Printed Date: 04 Nov 2025 at 12:57am
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Topic: D15 gas regulator mounting location

Posted By: dale melenia
Subject: D15 gas regulator mounting location
Date Posted: 28 Feb 2023 at 7:58pm

I am using a d15 gas wiring harness to rewire a diesel. The voltage regulator on the diesel is mounted on the generator. The gas wire harness wires for the regulator will not reach that location. Where was the voltage regulator mounted on a d15 gas? This is a series 1.

Replies:

Posted By: Tracy Martin TN
Date Posted: 28 Feb 2023 at 8:25pm

Left hand side of tractor under tank inside of side shield. HTH Tracy

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No greater gift than healthy grandkids!

Posted By: dale melenia
Date Posted: 28 Feb 2023 at 8:37pm

Thanks for your response. I thought that might be the case, but couldn't see any mounting holes. I wonder if the panel might be different for the gas. I'll do some more checking. Thanks again!

Posted By: DSeries4
Date Posted: 01 Mar 2023 at 3:44pm

Diesels were mounted on the generator itself. Series 1 gas had the regulator under the fuel tank behind the starter. Series 2s had the regulator ahead of the starter on the left side.

Several vendors do make wiring harnesses for the D15 diesel. I bought one from B&B Custom Circuits for my D15 diesel a couple of years ago.

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'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: dale melenia
Date Posted: 01 Mar 2023 at 5:14pm

Thank you for your reply! I tried several antique tractor parts suppliers, but they all said their suppliers no longer make one for the diesel, so I gave up on that. Since my tractor no longer had the the original air heater and the wiring had already been modified, I thought I would try to make the gas harness work. I will keep the vendor information you gave, in case this doesn't work out. I really don't want to spend another $250.00 for another one. This tractor has been converted to negative ground, but I don't think other necessary changes have been made. I understand that the wires on the amp gauge need to be reversed and something about polarizing the generator. Can you shed any light on that? Thanks again!

Posted By: dale melenia
Date Posted: 03 Mar 2023 at 5:29am