Farm Equipment - D 17 D tach

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D 17 D tach

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=170450
Printed Date: 28 Aug 2025 at 7:42am
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Topic: D 17 D tach

Posted By: levipatch
Subject: D 17 D tach
Date Posted: 23 Apr 2020 at 8:09am

I want to replace my old tach with a black face recording tach. Is it 1 to 1 or 2 to 1 drive , counter clock wise or clokwise,,, and will a later 190 or equal type tach interchange. Which one do I need? Any one done this? Billy

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Billy..Big cam 300, bcam 400,,941 CAT.,,Deere excavator..900 row crop.. 66 D 17 diesel IV... 985 Pratt and Whitney..4360 Pratt and Whitney... gitten tired !

Replies:

Posted By: Acdiesel
Date Posted: 23 Apr 2020 at 10:46am

clockwise and i'm not sure on the ratio.

why not replace it with an aftermarket? there's vendors on here that carry them.

or E-bay.

i also believe there is someone that can refurbish your old one.

https://www.ebay.com/itm/TACHOMETER-HOUR-OPERATION-METER-D17-DIESEL-230062-242374-AC-ALLIS-CHALMERS-1505/312880913052?hash=item48d927da9c:g:65cAAOSwf9td7dur" rel="nofollow - TACHOMETER HOUR OPERATION METER D17 DIESEL 230062 242374 AC ALLIS CHALMERS 1505

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D19 Diesel,D17 Diesel SER.3
2-D14, 2-D15 SER.II WF/NF
D15 SER.2 DIESEL
D12 SER.I, D10 Ser.II
2-720'S D21 Ser. II

Gmc,caterpillar
I'm a pharmacist (farm assist) with a PHD (post hole digger)

Posted By: levipatch
Date Posted: 23 Apr 2020 at 11:21am

Yea I know, but I dont like it. Too hard to read . Want other

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Billy..Big cam 300, bcam 400,,941 CAT.,,Deere excavator..900 row crop.. 66 D 17 diesel IV... 985 Pratt and Whitney..4360 Pratt and Whitney... gitten tired !

Posted By: levipatch
Date Posted: 23 Apr 2020 at 1:39pm

Looks like cam driven so its most likely 2 to 1 drive. Are other 301 s and 426 s cam driven tachs also ? Anybody ?

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Billy..Big cam 300, bcam 400,,941 CAT.,,Deere excavator..900 row crop.. 66 D 17 diesel IV... 985 Pratt and Whitney..4360 Pratt and Whitney... gitten tired !