D17 Final Drive?
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=170663
Printed Date: 24 Aug 2025 at 8:56am
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: D17 Final Drive?
Posted By: frnkeore
Subject: D17 Final Drive?
Date Posted: 29 Apr 2020 at 1:54pm
Yesterday, I was using my 10' pull disk. I didn't know that I had ran into a 1' x 2' rock and was dragging it (stuck under the front frame), until I made a fairly sharp, right turn and my tires started spinning. But, I heard a fairly loud "clunk", in the right FD and several more while get it unstuck.
I went on disking and found out that every time I made a fairly sharp Rt turn, I had that same "clunk" but, nothing when turning Left or longer sweeping Rt turns.
Would that be a symptom of a bad lower FD bearing?
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Frank
1959 D17 Series I #24001+, '59 D14
'55 & '59 Ford 850 & 861
Ferguson TO 35 Deluxe, Oliver 70 and 5 more.
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Replies:
Posted By: CAL(KS)
Date Posted: 29 Apr 2020 at 2:05pm
check the locks on the spin out rails first.
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Me -C,U,UC,WC,WD45,190XT,TL-12,145T,HD6G,HD16,HD20
Dad- WD, D17D, D19D, RT100A, 7020, 7080,7580, 2-8550's, 2-S77, HD15
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Posted By: Lonn
Date Posted: 29 Apr 2020 at 3:38pm
And the wheels bolts
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-- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... -
Wink
I am a Russian Bot
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Posted By: john(MI)
Date Posted: 29 Apr 2020 at 5:53pm
Unhook the disk and drive it around to see if you still hear it.
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D14, D17, 5020, 612H, CASE 446
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Posted By: frnkeore
Date Posted: 30 Apr 2020 at 7:15pm
I took it for a short drive today. Turn the wheels to a full RT lock and made several circles. No noise.
I then found a ~12" rock and drove over it, with the RT wheel at full lock, no noise. So, I did a full lock LT turn and drove over the rock, that time I got a sharp clunck on the RT side, similar to when pulling the disk but, sharper and only when the wheel hit it, unlike when I spun the tire, at full lock, with the disk. That seemed a little lower pitch and cluncked several times.
I can't see any sliding on the rails and I pulled all the lug bolts, lubed them and re-torqued. None where loose.
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Frank
1959 D17 Series I #24001+, '59 D14
'55 & '59 Ford 850 & 861
Ferguson TO 35 Deluxe, Oliver 70 and 5 more.
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Posted By: frnkeore
Date Posted: 01 May 2020 at 12:13pm
Ok, let me ask this question. What are the symptoms of warn out, lower final drive bearings?
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Frank
1959 D17 Series I #24001+, '59 D14
'55 & '59 Ford 850 & 861
Ferguson TO 35 Deluxe, Oliver 70 and 5 more.
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Posted By: DaveKamp
Date Posted: 01 May 2020 at 2:07pm
I'd put a jack on it, take weight off each tire, and give it a side-to-side wiggle to see if there's ANY lateral motion on the bearings, then spin them by hand. If there's a worn out or damaged bearing on the FD spindle, you'll be most likely to uncover it that way first.
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Ten Amendments, Ten Commandments, and one Golden Rule solve most every problem. Citrus hand-cleaner with Pumice does the rest.
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Posted By: SteveM C/IL
Date Posted: 01 May 2020 at 8:24pm
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once jacked up,pry with a bar under tire to check play
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Posted By: tbran
Date Posted: 03 May 2020 at 9:45pm
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A loose thrust washer in the differential or bad spider gear will do this.... a loose brg will show up with an oil leak usually if there is oil in the pan... when you jack it up spin it and listen to the differential... the previous suggestion of a loose rail would have been my first guess.
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When told "it's not the money,it's the principle", remember, it's always the money..
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Posted By: frnkeore
Date Posted: 04 May 2020 at 1:52am
Thank you, all for the input. I've got some more checking to do.
Any other input, will be appreciate, too.
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Frank
1959 D17 Series I #24001+, '59 D14
'55 & '59 Ford 850 & 861
Ferguson TO 35 Deluxe, Oliver 70 and 5 more.
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