JD450C Track Plate Bolts

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joecrawler47
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JD450C Track Plate Bolts

Post by joecrawler47 » Wed Jan 10, 2018 3:20 pm

Can someone tell me the size of the track plate bolts on a 1970's model JD 450C crawler loader with the 14 inch wide smaller grouser bars? The crawler is 40 miles away and I can't immediately go check. Thanks.

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tuney443
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Re: JD450C Track Plate Bolts

Post by tuney443 » Thu Jan 11, 2018 11:06 am

3/4" head, 1+3/8" L
Found the skull to the mastodon in Hyde Park, youngest one ever found so far in the world in 2000.

JD35D midi exc.
JD410G TLB
JD450D Dozer
2 JD 440 track loaders
JD 420 track loader
JD 450C track loader

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amos
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Re: JD450C Track Plate Bolts

Post by amos » Fri Jan 12, 2018 7:49 am

On a 450C dozer there are 2 options: 1.5" long and 1.75" long. What I had in my hand yesterday to measure was a called 1.75" but from bottom of head to end of bolt measured 1.875".
.5" NF thread.
"Bolts is bolts" is often said. They aren't. Track shoe/plate bolts have a higher head and are hardened after manufacture to handle abrasiveness of dirt and sand.
Had a few machines cone in with regular grade 8 NC bolts on shoes and every one of those bolts had loosened. Heads worn down and I always ended up cutting them off to remove and replace with correct track shoe bolts.
New bolts and nuts(again a special design and hardened) are about $0.50 per plus shipping on the net.
Amos
Pushin hard or diggin deep life is good.
What's ahead is what matters. What's behind is already done.
A fool of a man is he who doesn't ask questions...
God gave us 2 ears and 1 mouth for a reason...

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tuney443
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Re: JD450C Track Plate Bolts

Post by tuney443 » Fri Jan 12, 2018 11:57 am

He asked on a loader Amos, NOT a dozer, might be a difference, not sure but mine do measure 1.5", must have been dark or time to see the eye doc, or both.
Found the skull to the mastodon in Hyde Park, youngest one ever found so far in the world in 2000.

JD35D midi exc.
JD410G TLB
JD450D Dozer
2 JD 440 track loaders
JD 420 track loader
JD 450C track loader

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amos
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Re: JD450C Track Plate Bolts

Post by amos » Fri Jan 12, 2018 5:44 pm

Hi Tuney,
Not sure they are different but could be. I have used the 1.5" and with correct nut about 1/8" of thread is exposed when torqued. More thread showing with the 1.75" bolt but other than that they seemed to be interchangeable.
Will be at farm with my 350B loader and have 450C dozer bolts in barn and will compare.
Amos
Pushin hard or diggin deep life is good.
What's ahead is what matters. What's behind is already done.
A fool of a man is he who doesn't ask questions...
God gave us 2 ears and 1 mouth for a reason...

B Town
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Re: JD450C Track Plate Bolts

Post by B Town » Sat Jan 13, 2018 9:01 am

There are several sizes listed , serial numbers breaks, non-strutted links, strutted, SALT , and then the split-type master link. Most are 1/2" diameter , 9/16 for split masters. Lengths vary between 1.560" part number T40535 for single bar grouser, 1.732" for early double bar. 2 3/8 for sealed links. I agree with Amos, but the bolt and nuts for the correct application. Track bolt should be used. Take care, Bruce

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amos
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Re: JD450C Track Plate Bolts

Post by amos » Sat Jan 13, 2018 9:12 am

Morning Btown,
I've also ran into aftermarket track groups: throws everything off. Usually I measure what I need and go from there but original question indicated he was away from the machine.
He should probably make the drive to be sure. I've "thought" I knew what I needed for a machine at my farm(35 miles away) and bought the part only to find my thoughts were wrong.
Amos
Pushin hard or diggin deep life is good.
What's ahead is what matters. What's behind is already done.
A fool of a man is he who doesn't ask questions...
God gave us 2 ears and 1 mouth for a reason...

joecrawler47
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Re: JD450C Track Plate Bolts

Post by joecrawler47 » Sat Jan 13, 2018 8:51 pm

TThanks for all the replies. This tells me I need to check to be sure.

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