Transmission whine on a B
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=116983
Printed Date: 20 Dec 2025 at 6:12pm
Software Version: Web Wiz Forums 11.10 - http://www.webwizforums.com
Topic: Transmission whine on a B
Posted By: CrestonM
Subject: Transmission whine on a B
Date Posted: 01 Jan 2016 at 11:36pm
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How much is too much? I know they say the A-C's are known for their whine, but I'm just wondering if there's a way to tell. What causes the whine? My 8N is real quite and when I switch to the B it's a pretty noticeable difference. Thanks
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Replies:
Posted By: HD6GTOM
Date Posted: 02 Jan 2016 at 8:02am
| not uncommon for a b to whine -- uncommon for a 8n not to whine |
Posted By: Gerald J.
Date Posted: 02 Jan 2016 at 8:42am
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Straight cut gears tend to whine when worked. Helical cut gears tend to not whine. Helical gears are more expensive and don't work for sliding gear transmissions. Straight cut gears, especially when worn have a bit of a gap when shifting the load to the next tooth and that makes the whine. Helical cut gears can be made to not have that gap, but in a transmission need shifting clutches. Gerald J. |
Posted By: Lonn
Date Posted: 02 Jan 2016 at 9:46am
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You don't need shifting clutches for a helical gear transmission. Dad's been farming with Allis helical gears since the late 60's and I have grown up with these transmissions and the only gear jumper we ever had was a D17 that my brother bought and it was that way when he bought it. One trip to the dealer 20 years ago and it's been fine ever since. You get enough wear they will eventually pop out, yes but you could say the same about syncro clutches. Eventually you'll have to rebuild them. I've never seen a 7010 thru 8070 ever jump out of gear and they have no shifting clutches. OK rant over. ------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Posted By: wfmurray
Date Posted: 02 Jan 2016 at 10:07am
| Gears to tight whine ,gears to loose roar. My 49 B seems to roar but after 66 years I yes it has loosened up a bit. |
Posted By: CrestonM
Date Posted: 02 Jan 2016 at 10:37am
| This'n kinda makes a noise similar to your stomach growling when going down the road. Sometimes it's loud, sometimes it's not too bad. I thought maybe it was in the chains in the drop boxes. |
Posted By: Emmo213
Date Posted: 02 Jan 2016 at 10:06pm
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I think they all whine. Here's a couple videos of mine and the noise the tranny makes. Edit: forgot to post the YouTube link. http://www.youtube.com/playlist?list=PL2H0fSTNBgwy53XCFK-_qXXs9XdRL3t1u" rel="nofollow - https://www.youtube.com/playlist?list=PL2H0fSTNBgwy53XCFK-_qXXs9XdRL3t1u ------------- '38 Allis B '41 JD A |
Posted By: Chalmersbob
Date Posted: 02 Jan 2016 at 10:29pm
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There are no chains in the drop boxes. Only gears. B's are noisy. Bob ------------- 4 B's, 1 C's,3 CA's, 2 G's WD, D14, D15, B-1, B10, B12, 712S, |
Posted By: CrestonM
Date Posted: 02 Jan 2016 at 10:36pm
Really? The guy I bought it from (I was 11) said they had chains. Phffft! What an idiot! He said don't hook too big a load on it because it could either twist off the drive shaft in the torque tube or break the chains in the drop boxes. I have yet to do either lol, but I guess the 2nd is impossible!
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Chalmersbob wrote:Posted By: JohnCO
Date Posted: 02 Jan 2016 at 10:58pm
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With a B it's hard to hook too big a load on it and still get it to move, even though they are powerful little tractors! Hard to break it unless you jerk it hard.
------------- "If at first you don't succeed, get a bigger hammer" Allis Express participant |
Posted By: SHAMELESS
Date Posted: 02 Jan 2016 at 11:29pm
| you sure that whine ain't coming from the seat? |
Posted By: Lonn
Date Posted: 03 Jan 2016 at 9:20am
------------- -- --- .... .- -- -- .- -.. / .-- .- ... / .- / -- ..- .-. -.. . .-. .. -. --. / -.-. .... .. .-.. -.. / .-. .- .--. .. ... - Wink I am a Russian Bot |
Posted By: Gilly
Date Posted: 04 Jan 2016 at 5:51pm
Just watched your video, my B makes the same sound when you let the clutch out, any idea what causes it? Thanks. Gilly. |
Posted By: Hubnut
Date Posted: 04 Jan 2016 at 6:13pm
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The first video of you driving it sounds like all my Bs and Cs. The second video where you are feathering the clutch sounds like the pre-load on the forward main transmission shaft has loosened. That is just a guess though. If you start it in neutral and let it idle a bit (20 seconds), then push the clutch in, does it grind when you try to put it in gear? I suppose it could also be the clutch release bearing too.
------------- 1940 B "Lucy" 1941 B w/ Woods L59 "Flavia" 1942 B w/ finish mower "Dick" 1941 C w/ 3-point "Maggie" 1947 C SFW w/ L306 "Trixie" 1972 314H |
Posted By: Emmo213
Date Posted: 04 Jan 2016 at 7:34pm
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Nope, never figured out why it was making that noise. No, the gears don't grind if I let it sit for awhile. That video was taken after the tractor had been running for awhile. Actually I don't think the gears have ever grinded except for user error. ------------- '38 Allis B '41 JD A |
Posted By: Gilly
Date Posted: 04 Jan 2016 at 8:07pm
Mine is exactly the same, i changed all of the main shaft bearings as there was water in the housing, the bearing on the end of the main shaft (into the pto housing) had collapsed so assumed that would cure it. But it didnt, not caused any problems so far though. |
Posted By: Steve in NJ
Date Posted: 05 Jan 2016 at 6:27am
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My B tranny whines, the IB tranny whines even more and its got all new bearings and races in it. ------------- 39'RC, 43'WC, 48'B, 49'G, 50'WF, 65 Big 10, 67'B-110, 75'716H, 2-620's, & a Motorhead wife |
Posted By: wdtom
Date Posted: 10 Jan 2016 at 3:38pm
| If you haven't changed the gear oil in the drop boxes you should consider removing the pans and doing a change, most farmers never did and it can be nasty. Tom |
Posted By: CrestonM
Date Posted: 10 Jan 2016 at 3:58pm
I did that last year. Had very little oil in there, with a lot of gunk in the bottom.
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