WD with clicking in rear end
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=142226
Printed Date: 25 Aug 2025 at 5:53am
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Topic: WD with clicking in rear end
Posted By: MN-Realtor-Farmer
Subject: WD with clicking in rear end
Date Posted: 06 Sep 2017 at 10:35pm
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Allis fans, I brought home my third WD today. Always a happy day when new tractors arrive. The engine on this one runs great, so I am going to leave it be for a while. There is however a ticking noise in the rear end that I would like to take care of before it drives me crazy. Here is what I have and need the collective experience to help with: the tick only takes place when the tractor is moving in a forward gear. It does not tick when rolling in reverse and does not tick if the tractor is not moving - even with the engine running. The ticking sound does get faster in each successively higher gear. I have an entire rear end from another WD that I could swap if need be, but would prefer to try and fix the problem on this one if possible. Thoughts? What should I be investigating first? |
Replies:
Posted By: Dave H
Date Posted: 07 Sep 2017 at 5:31am
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I had a JD 420W make that rear ticking just like you described. Took the rear cover off and reached under the differential and drug out some of the pinion gear teeth. |
Posted By: tractorhead9542
Date Posted: 07 Sep 2017 at 6:12am
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Does the sound appear to be coming from a wheel end or from the differential? No ticking in Reverse leads me to believe above reply is accurate. ------------- The road to nowhere...leads to me |
Posted By: Tbone95
Date Posted: 07 Sep 2017 at 7:28am
Did the PO leave a baseball card in the spokes? Sorry. Couldn't help myself. Good luck with your tractor and hopefully you can repair fairly easily.
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Posted By: CTuckerNWIL
Date Posted: 07 Sep 2017 at 7:57am
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Is it possibly in a brake? ------------- http://www.ae-ta.com" rel="nofollow - http://www.ae-ta.com Lena 1935 WC12xxx, Willie 1951 CA6xx Dad bought new, 1954WD45 PS, 1960 D17 NF |
Posted By: tractorhead9542
Date Posted: 07 Sep 2017 at 8:05am
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Highly unlikely. You would have noise forward and reverse. Do yourself a favor and jack up each final drive and spin the wheel ------------- The road to nowhere...leads to me |
Posted By: SteveM C/IL
Date Posted: 07 Sep 2017 at 11:40am
| could reverse gear be riding too close to idler when not in reverse? |
Posted By: cpg
Date Posted: 07 Sep 2017 at 12:46pm
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Shut the tractor off and roll it. My wife's Farmall M was clunking from what sounded like the front of the transmission when I first got it going. Turned it off and rolled it while I stood next to it and turned out I had a bad front wheel bearing (which would make sense with it clicking faster in higher gears) and it would vibrate or echo or whatever you want to call it up through the under side of the tractor and sounded just like it was in the transmission. |
Posted By: MN-Realtor-Farmer
Date Posted: 07 Sep 2017 at 3:38pm
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So I went out and took the cover plate off of the differential housing today. I slopped out all of the cruddy oil and grease and found a piece of metal that looks like part of one of the bevel ring gear teeth. I inspected the whole ring gear, but none of the teeth were missing. It is possible that metal was from a previous repair as well. I tried to inspect each of the side gears and pinions for missing teeth but parts of these are blocked while everything is turning so I couldn't see everything. From what I did see there, everything was fine. I jacked the tractor up and spun each final drive on their own. The left one did not make any noise, but the right one did. Is it possible that the issue is somewhere in the right break housing? I'm not ruling out a pinion or side gear tooth, but prefer to check all other possibilites before splitting the rear end and removing each final drive to get to the differential for a complete inspection. On a side note, how do you refill the oil in the differential housing. There wasn't much in there, but I don't want to run it dry. Couldn't find a fill hole anywhere.  |
Posted By: Stan IL&TN
Date Posted: 07 Sep 2017 at 3:59pm
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There is a hole/passage that allows the oil from the transmission to also fill the rear end. Fill is from the pipe plugs along the left side rail. ------------- 1957 WD45 dad's first AC 1968 one-seventy 1956 F40 Ferguson |
Posted By: pumpkinman
Date Posted: 07 Sep 2017 at 4:06pm
| FILL PLUGS ARE ON THE LEFT SIDE OF THE HOUSING INSIDE THE FRAME RAIL BY THE CLUTCH PEDAL |
Posted By: MN-Realtor-Farmer
Date Posted: 07 Sep 2017 at 4:10pm
 Is that the guy I am looking for? Fill to overflow? |
Posted By: Bill Long
Date Posted: 07 Sep 2017 at 4:25pm
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You might want to check the tightness of the bolts that hold the rear wheels on. Sometimes they work loose and use causes a ticking noise. Good Luck! Bill Long |
Posted By: tractorhead9542
Date Posted: 07 Sep 2017 at 5:01pm
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I've been thinking about this quite a bit today and I don't think it has anything to do with the wheel end because it would make the noise in reverse being the gears are straight cut in the finals. if it's only in forward that acts more like a pinion or ring out of whack. Remember it's designed to go forward with pull, reverse is little to no effort ------------- The road to nowhere...leads to me |
Posted By: tractorhead9542
Date Posted: 07 Sep 2017 at 5:05pm
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If it was in forward and reverse I would consider looking at wheel tightness rail tightness and final drive bearings. But forward only makes me think pinion Slack. Is the noise consistent like every Revolution of the wheel or is it faster? Or sporadic? ------------- The road to nowhere...leads to me |
Posted By: MN-Realtor-Farmer
Date Posted: 07 Sep 2017 at 5:16pm
| It seems to click with every revolution, but I jave never timed it against wheel revolutions. In fact it may be more than one per revolution, but it difinetly increases in frequency with speed. |
Posted By: Tbone95
Date Posted: 08 Sep 2017 at 6:43am
| Well......finding chunks of metal in it is never a positive sign. Most likely digging a little deeper in that area will reveal the issue. |
Posted By: tractorhead9542
Date Posted: 08 Sep 2017 at 7:11am
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From the picture that you posted that really looks like a piece of gear tooth. Can you get a better look at pinion? ------------- The road to nowhere...leads to me |
Posted By: Dave H
Date Posted: 08 Sep 2017 at 7:30am
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That could very well be a chunk of differential pinion gear. On mine the chunks under the diffy came from the pinion. Is there some way you can take a gander at the pinion gear? |