The Ford Barn

Max · 08-12-2012, 05:33 PM

34 Sedan, has a rattle from the torque tube on the over run, ie, when decelerating. The noise disappears under acceleration.
Any ideas on what it could be?
The noise is definitely from the torque tube.
Thx,
Max

Don · 08-12-2012, 05:57 PM

If it has always done this ,might be ring and pinion out of specs. Could also be lack of lubrication in universal joint.

oldbugger · 08-12-2012, 06:00 PM

Or possibly front drive shaft bearing.

JM 35 Sedan · 08-12-2012, 07:17 PM

Sounds like the universal joint to me. Sometimes the pins at the rear coupling or driveshaft to pinion gear will come loose and and hit on the inside of torque tube but this would probably make noise accelerating and decelerating.

Kerk · 08-12-2012, 07:53 PM

Check the rubber ball on the wish bone . Easy fix if loose or worn !!

Old Henry · 08-13-2012, 12:51 AM

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Put the rear axle up on jack stands, start the engine, put it in gear and let up on the clutch so the back wheels are spinning in air. Then get under there and listen for where the noise is coming from. Our hearing is very directional and you can tell whether it's coming from the front, the back, or the middle of the tube. To get an even better listen get a long screw driver, press the handle against your ear and touch the other end to the torque tube in various places to "hear inside" what's going on. I did all of that to diagnose a problem with mine.

If you can't hear the noise because there is no load on the drive train, have someone sit in the driver's seat and apply the brakes slowly while reving the engine slowly to maintain the drive train speed while putting the load of the rear brakes on it.

G.M. · 08-13-2012, 09:14 AM

Put a tube of low melt point grease in the "U" joint. Low melt point is the cheapest grease on the shelf. G.M.

phil pavicich · 08-23-2012, 08:13 AM

i just had the same problem with my 34 sedan a ticking rattling noise , i thought it was the brake rods rattling , after putting car on hoist and running thru the gears the noise is in the torque tube , i then removed diff and torque tube to find out that the rear drive shaft lock pin had came out 1/2 way and was hitting the side of the torque tube , now to fix the whole diff with new bearings whilst its out

Steves46 · 08-23-2012, 08:51 AM

Max, I too had a similar situation when I first got my 46 coupe. It turned out to be a couple of loose bolts that hold the casing around the universal joint. After snugging them down (and 2 busted knuckles)

the rattle was resolved. I still periodically check to be sure nothing has loosened. Hope you are able to resolve. Steve

Straightpipes · 08-23-2012, 05:49 PM

Sounds like your outer pinion nut is rattling around in there

08-12-2012, 05:33 PM	#1
Max Junior Member Join Date: May 2010 Location: Perth, Western Australia Posts: 22	Noise from Torque tube 34 Sedan, has a rattle from the torque tube on the over run, ie, when decelerating. The noise disappears under acceleration. Any ideas on what it could be? The noise is definitely from the torque tube. Thx, Max

08-12-2012, 05:57 PM	#2
Don Senior Member Join Date: May 2010 Location: Ashland KY Posts: 1,159	Re: Noise from Torque tube If it has always done this ,might be ring and pinion out of specs. Could also be lack of lubrication in universal joint. __________________ DON P

08-12-2012, 06:00 PM	#3
oldbugger Senior Member Join Date: May 2010 Location: Holland Mi Posts: 761	Re: Noise from Torque tube Or possibly front drive shaft bearing.

08-12-2012, 07:17 PM	#4
JM 35 Sedan Senior Member Join Date: May 2010 Location: Near Rising Sun, Maryland Posts: 10,876	Re: Noise from Torque tube Sounds like the universal joint to me. Sometimes the pins at the rear coupling or driveshaft to pinion gear will come loose and and hit on the inside of torque tube but this would probably make noise accelerating and decelerating. __________________ *John* *"Never give up on what you really want to do. The person with big dreams is more powerful than one with all the facts". Albert Einstein*

08-12-2012, 07:53 PM	#5
Kerk Senior Member Join Date: May 2010 Posts: 642	Re: Noise from Torque tube Check the rubber ball on the wish bone . Easy fix if loose or worn !!

08-13-2012, 12:51 AM	#6
Old Henry Senior Member Join Date: Oct 2010 Location: Orem, Utah Posts: 5,781	Re: Noise from Torque tube Sponsored Links (Register now to hide all advertisements) Put the rear axle up on jack stands, start the engine, put it in gear and let up on the clutch so the back wheels are spinning in air. Then get under there and listen for where the noise is coming from. Our hearing is very directional and you can tell whether it's coming from the front, the back, or the middle of the tube. To get an even better listen get a long screw driver, press the handle against your ear and touch the other end to the torque tube in various places to "hear inside" what's going on. I did all of that to diagnose a problem with mine. If you can't hear the noise because there is no load on the drive train, have someone sit in the driver's seat and apply the brakes slowly while reving the engine slowly to maintain the drive train speed while putting the load of the rear brakes on it. __________________ Prof. Henry (The Roaming Gnome) "It is good to have an end to journey toward; but it is the journey that matters, in the end.” *Ursula K. Le Guin in The Left Hand of Darkness

08-13-2012, 09:14 AM	#7
G.M. Senior Member Join Date: May 2010 Location: Florida and Penna. Posts: 4,471	Re: Noise from Torque tube Put a tube of low melt point grease in the "U" joint. Low melt point is the cheapest grease on the shelf. G.M. __________________ www.fordcollector.com

08-23-2012, 08:13 AM	#8
phil pavicich Member Join Date: Aug 2010 Location: australia Posts: 58	Re: Noise from Torque tube i just had the same problem with my 34 sedan a ticking rattling noise , i thought it was the brake rods rattling , after putting car on hoist and running thru the gears the noise is in the torque tube , i then removed diff and torque tube to find out that the rear drive shaft lock pin had came out 1/2 way and was hitting the side of the torque tube , now to fix the whole diff with new bearings whilst its out

08-23-2012, 08:51 AM	#9
Steves46 Senior Member Join Date: May 2010 Location: Lithia, FL Posts: 1,098	Re: Noise from Torque tube Max, I too had a similar situation when I first got my 46 coupe. It turned out to be a couple of loose bolts that hold the casing around the universal joint. After snugging them down (and 2 busted knuckles) the rattle was resolved. I still periodically check to be sure nothing has loosened. Hope you are able to resolve. Steve __________________ If it aint broke, don't fix it!

08-23-2012, 05:49 PM	#10
Straightpipes Senior Member Join Date: May 2010 Location: Ballston Spa, NY Posts: 790	Re: Noise from Torque tube Sounds like your outer pinion nut is rattling around in there