Farm Equipment - need help with noise in c

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need help with noise in c

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=21443
Printed Date: 12 Feb 2025 at 3:05am
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Topic: need help with noise in c

Posted By: prospolaris
Subject: need help with noise in c
Date Posted: 27 Nov 2010 at 7:53pm

hey i just bought a 1945 allis c for $350. well i got it running great but had a loud bearing growl in the rear end when in gear. any gear. doesn't do it running in neutral. i checked and changed all fluids. all seemed to be fine and water free.. any ideas. i don't know if its trans rear or final drives. but looking to fix it asap

Replies:

Posted By: pumpkin man
Date Posted: 27 Nov 2010 at 8:59pm

Jack it up set it on blocks or jack stans put in gear use a mechanics stethescope or a long screwdriver [put your ear on the handle ] listen at the bearing points for the loudes noise [ use the brakes to shift power to the other wheel ] mybe you can pinpoint the noise if it only growls with a load on the wheels check the bull gear bearings

Posted By: prospolaris
Date Posted: 28 Nov 2010 at 6:46pm

well i jacked up the rear of it. with it in neutral i rolled one tire at a time. seems like its coming from trans area. not in final drives. trans did not have water in it and has good fluid in it.. any ideas?

Posted By: pumpkin man
Date Posted: 29 Nov 2010 at 11:22am

Leave it jacked up with the motor runing put the P T O in gear that will let you listen to the maine shaft bea rings then put it in gear and listen to the diff. carier bearings use the brakes to load them its a proces of Elimation its in your hands from there -use it till it pukes -pull it apart-look for a trans&diff.[ b & C are same ] unit at a bone yard or swap meet

Posted By: Jeff Z. NY
Date Posted: 29 Nov 2010 at 2:38pm

I have a C that has had a transmission growl for 20 years.
Keep fluids up and run it.

Posted By: Jeff Z. NY
Date Posted: 29 Nov 2010 at 2:47pm

You can drain the transmission and rear and add a quart of Lucas Heavy Duty Oil Stabilizer when you refill it and see if the extra coating from the Lucas quiets things down.

I just refill with 20w non-detergent motor oil and add the Lucas.

Posted By: Hartland Farm
Date Posted: 29 Nov 2010 at 3:16pm

Back many years ago my Dad's C had a noise in the front of the transmission that you could hear when from a distance. It did it in all gears but not when idling in netural. I split the tractor and found a lot of end play in the input shaft of the transmission. I took some shims out from behind the input shaft bearing cap and put the bearing cap back on. The noise was gone and to this day it has never come back.

Joe (TN)