Clanking trans

General help and support for your Lindeman through 2010 John Deere crawler
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Jirving43
40C crawler
40C crawler
Posts: 23
Joined: Wed Jan 30, 2019 5:43 pm
Location: Wasilla, Ak

Clanking trans

Post by Jirving43 » Tue Jun 11, 2019 3:27 pm

In my 59 440 ICD (Studebaker powered NO REVERSER) I have a clanking noise in R,1,2,3 gears in forward and reverse.. All gears look ok when I pull the shifter cover off.. Any ideas?

original possum
440 crawler
440 crawler
Posts: 162
Joined: Wed Sep 11, 2013 3:34 pm
Location: Shiner, texas

Re: Clanking trans

Post by original possum » Wed Jun 12, 2019 10:12 am

Is the clanking related to ground speed or does it change with changing gears (in other words: Is it related to ring gear or transmission)? If it is related to ground speed then the problem is probably in the ring gear. If it changes with the gears it is probably transmission. If it is transmission the frequency will help you determine which shaft (gear) or bearing. Input shaft and gear will vary with rpm regardless of gear. If 4th is straight-through (I do not recall) and doesn't clank the look at lower shaft.
Early 40C w/Yakima toolbar and homebuilt ripper: 350 w/6-way

Jirving43
40C crawler
40C crawler
Posts: 23
Joined: Wed Jan 30, 2019 5:43 pm
Location: Wasilla, Ak

Re: Clanking trans

Post by Jirving43 » Sun Jun 16, 2019 9:01 pm

So it does it in 1,2,R the clunk is one time per revolution of the trans input shaft, both front and rear bearings and races on input shaft are new. The gears in case have some wear but nothing terrible, no broken teeth and neither of the other transmission shafts feel loose.

original possum
440 crawler
440 crawler
Posts: 162
Joined: Wed Sep 11, 2013 3:34 pm
Location: Shiner, texas

Re: Clanking trans

Post by original possum » Tue Jun 18, 2019 11:13 am

Sorry, but the only thing I know that turns at the speed of the input shaft IS that shaft. It runs all the way to the flywheel, so the sound may be originating elsewhere. BTW, there are two revolutions of the input shaft for every "pop". Don't know why it doesn't change with 1,2, and R and is not there in other gears. Would suspect the cluster gear if it was only in those gears but changed with gear.
Early 40C w/Yakima toolbar and homebuilt ripper: 350 w/6-way

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gregjo1948
350 crawler
350 crawler
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Re: Clanking trans

Post by gregjo1948 » Thu Jun 20, 2019 4:10 am

Is the noise there when in neutral? Is the noise there while in the mentioned gears if you pull back either or both steering levers?
JD 350B diesel w/rops & 6way blade, Case 580B Loader/backhoe, Farmall 504 high crop w/ flail boom mower, International 404 utility, International 284 diesel w/belly mower, 1972 Ford F600 dump truck, Galion 3-5 roller, Allis Chalmers D17

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Lavoy
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Re: Clanking trans

Post by Lavoy » Thu Jun 20, 2019 8:55 am

Clunking at the rate of rotation of the input shaft would be at least 600 times per minute at idle. I am thinking you are not hearing the input shaft.
Lavoy
Parts and restoration for antique and late model John Deere crawlers.
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dtoots1
2010 crawler
2010 crawler
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Joined: Fri Nov 30, 2012 8:54 am
Location: akron, ohio

Re: Clanking trans

Post by dtoots1 » Thu Jun 20, 2019 9:26 am

Jay,
check driveshaft and u joints

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